Sennheiser Microphone SKM 300 User Manual

SKM 300  
Instruction manual  
 
Contents  
Contents  
Important safety instructions .............................................. 2  
The SKM 300 G3 radio microphone family ........................ 3  
The frequency bank system ............................................ 3  
Areas of application ........................................................... 4  
Delivery includes ...................................................................... 5  
Product overview ..................................................................... 6  
Overview of the SKM 300 G3 radio microphone .......... 6  
Overview of the displays .................................................. 7  
Putting the radio microphone into operation ................... 8  
Inserting the batteries/accupack .................................... 8  
Charging the accupack ...................................................... 9  
Changing the microphone head ................................... 10  
Using the radio microphone ............................................... 12  
Deactivating the lock mode temporarily .................... 14  
Muting the audio signal or deactivating  
the RF signal ..................................................................... 14  
Selecting a standard display ........................................ 16  
Using the operating menu .................................................. 17  
The buttons ..................................................................... 17  
Overview of the operating menu ................................ 18  
Working with the operating menu ............................. 19  
Adjusting settings via the operating menu ................... 21  
The main menu “Menu” ................................................. 21  
Synchronizing the radio microphone with a receiver .. 27  
Synchronizing the radio microphone  
with the receiver – individual operation .................... 27  
Synchronizing radio microphones  
with receivers – multi-channel operation .................. 27  
Cleaning the radio microphone ......................................... 28  
Recommendations and tips .............................................. 29  
If a problem occurs ... .......................................................... 30  
Accessories and spare parts ............................................... 31  
Specifications ......................................................................... 32  
Polar diagrams and frequency response curves  
of the microphone heads ............................................... 33  
Manufacturer Declarations ................................................. 35  
Index ........................................................................................ 37  
An animated instruction manual can be viewed  
on the SKM 300 G3 product page on our  
1
 
Important safety instructions  
Important safety instructions  
Read this instruction manual.  
Keep this instruction manual. Always include this  
instruction manual when passing the product on to third  
parties.  
Heed all warnings and follow all instructions in this  
instruction manual.  
Use only a cloth for cleaning the product.  
Do not place the product near any heat sources such as  
radiators, stoves, or other devices (including amplifiers)  
that produce heat.  
Only use attachments/accessories specified by  
Sennheiser.  
Refer all servicing to qualified service personnel.  
Servicing is required if the product has been damaged in  
any way, liquid has been spilled, objects have fallen  
inside, the product has been exposed to rain or mois-  
ture, does not operate properly or has been dropped.  
WARNING: To reduce the risk of short circuits, do not use  
the product near water and do not expose it to rain or  
moisture.  
Replacement parts  
When replacement parts are required, be sure the service  
technician uses replacement parts specified by Sennheiser  
or those having the same characteristics as the original  
part. Unauthorized substitutions may result in fire, electric  
shock, or other hazards.  
Intended use  
Intended use of the ew 300 G3 series products includes:  
having read these instructions especially the chapter  
“Important safety instructions”,  
using the products within the operating conditions and  
limitations described in this instruction manual.  
“Improper use” means using the products other than as  
described in this instruction manual, or under operating  
conditions which differ from those described herein.  
2
 
The SKM 300 G3 radio microphone family  
The SKM 300 G3 radio  
microphone family  
This radio microphone is part of the evolution wireless  
series generation 3 (ew G3). With this series, Sennheiser  
offers high-quality state-of-the-art RF transmission  
systems with a high level of operational reliability and ease  
of use. Transmitters and receivers permit wireless transmis-  
sion with studio-quality sound.  
Features of the evolution wireless 300 G3 series:  
Optimized PLL synthesizer and microprocessor  
technology  
HDX noise reduction system  
Pilot tone squelch control  
True diversity technology  
Switching bandwidth of 42 MHz  
Increased immunity to intermodulation and  
interferences in multi-channel operation  
Interchangeable microphone heads, allowing the use of  
different pick-up patterns and sensitivities  
Extended muting function due to MIC button on the  
radio microphone  
The frequency bank system  
The radio microphone is available in 6 UHF frequency  
ranges with 1,680 transmission frequencies per frequency  
range:  
Range A:  
516 – 558  
Range G:  
566 – 608  
Range B:  
626 – 668  
Range C:  
734 – 776  
Range D:  
780 – 822  
Range E:  
823 – 865  
Each frequency range (A–E, G) offers 26 frequency banks  
with up to 24 channels each:  
Channel 1 – frequency preset  
Channel 2 – frequency preset  
Frequency bank 1 ... 20  
Channel 24 – frequency preset  
Channel 1 – freely selectable frequency  
Channel 2 – freely selectable frequency  
Frequency bank U1 ... U6  
Channel 24 – freely selectable frequency  
Each of the channels in the frequency banks “1” to “20”  
has been factory-preset to a fixed frequency (frequency  
preset).  
3
 
   
The SKM 300 G3 radio microphone family  
The factory-preset frequencies within one frequency bank  
are intermodulation-free. These frequencies cannot be  
changed.  
For an overview of the frequency presets, please refer to the  
supplied frequency information sheet. Updated versions of  
the frequency information sheet can be downloaded from  
the SKM 300 G3 product page on our website at  
The frequency banks “U1” to “U6” allow you to freely select  
and store frequencies. It might be that these frequencies  
are not intermodulation-free.  
Areas of application  
The radio microphone can be combined with the EM 300 G3  
rack-mount receiver.  
The EM 300 G3 rack-mount receiver is available in the same  
UHF frequency ranges and is equipped with the same  
frequency bank system with factory-preset frequencies.  
This has the advantage that:  
a transmission system is ready for immediate use after  
switch-on,  
several transmission systems can be operated simulta-  
neously on the preset frequencies without causing  
intermodulation interference.  
Interchange-  
ablemicrophone  
Radio microphone heads  
Receiver  
PEAK  
0
-10  
-20  
-30  
-40  
AF  
B.Ch: 20.24  
ew300 G3  
MHz  
40  
30  
20  
10  
531.375  
EQ  
SKM300  
12dB MUTE  
+
RF  
P
SKM 300-835 G3* MMD 835-1,  
EM 300 G3  
*
SKM 300-845 G3  
SKM 300-865 G3  
MMD 845-1  
MME 865-1  
*
* The name of the radio microphone is a combination of the  
name of the transmitter and the name of the microphone  
head:  
Transmitter + microphone head = Name of radio micro-  
phone  
SKM 300 + MMD 835-1  
= SKM 300-835  
Overview of the microphone heads:  
Microphone  
head  
Microphone  
type  
Pick-up pattern  
MMD 835-1  
dynamic  
– cardioid  
MMD 845-1  
MME 865-1  
dynamic  
– super-cardioid  
– super-cardioid  
condenser  
The name and pick-up pattern of the microphone head are  
printed on the sound inlet basket of the radio microphone.  
4
 
 
Delivery includes  
Delivery includes  
The packaging contains the following items:  
1 SKM 300 G3 radio microphone incl. microphone head  
2 AA size batteries, 1.5 V  
1 microphone clamp  
1 instruction manual  
1 frequency information sheet  
1 RF licensing information sheet  
5
 
 
Product overview  
Product overview  
Overview of the SKM 300 G3 radio  
microphone  
»
º
²
´
¿
·
¾
¹
¸
µ
¾
Ƹ
¸
¸
³ Microphone head (interchangeable)  
· Name and pick-up pattern of the microphone head  
(not visible here, see page 4)  
» MIC button  
¿ Body of radio microphone  
´ Battery compartment (not visible from outside)  
² Display panel, backlit in orange  
Infra-red interface  
º Antenna  
¾ Color-coded protection ring;  
available in different colors  
µ Operation and battery status indicator, red LED  
(lit = ON/flashing = LOW BATTERY)  
¸ Charging contacts  
¹ Multi-function switch:  
̄ (DOWN), (UP) and (SET)  
Ƹ ON/OFF button  
with ESC function (cancel)  
6
 
         
Product overview  
Overview of the displays  
After switch-on, the radio microphone displays the stan-  
dard display “Frequency/Name”. For further illustrations  
and examples of the different standard displays, refer to  
page 16.  
The display backlighting is automatically reduced after  
approx. 20 seconds.  
ባ ቤ  
MHz  
531.375  
ew300 G3  
P
MUTE  
AF  
Display  
Meaning  
Audio level “AF” Modulation of the radio micro-  
phone with peak hold function  
Frequency  
Current transmission frequency  
Name  
Freely selectable name of the  
transmitter  
Transmission icon RF signal is being transmitted  
Lock mode icon  
Lock mode is activated  
P” (pilot tone)  
Pilot tone transmission is  
activated  
MUTE”  
Audio signal is muted  
Charge status:  
approx. 100%  
approx. 70%  
Battery status  
approx. 30%  
charge status is  
critical, the red  
LOW BATTERY LED µ  
is flashing:  
µ
7
 
 
Putting the radio microphone into operation  
Putting the radio microphone  
into operation  
Inserting the batteries/accupack  
For powering the radio microphone, you can either use two  
1.5 V AA size batteries or the rechargeable Sennheiser  
BA 2015 accupack (see “Accessories and spare parts” on  
page 31).  
CAUTION! Danger of damage to the radio microphone!  
When unscrewing the radio microphone  
during operation while pressing the MIC  
button » at the same time, the electronics of  
the radio microphone will be damaged.  
̈ Do not press the MIC button » while  
unscrewing the radio microphone.  
̈ Unscrew the lower part of the radio microphone from  
the radio microphone’s body ¿ by turning it counter-  
clockwise.  
¿
When unscrewing the radio microphone during  
operation, the muting function is automatically  
activated. “MUTE” appears on the display panel.  
When screwing the lower part of the radio micro-  
phone back to the radio microphone’s body, the  
muting is canceled. “MUTE” disappears from the  
display panel.  
̈ Slide back the lower part of the radio microphone as far  
as it will go.  
̈ Open the battery compartment cover ƹ.  
ƹ
8
 
   
Putting the radio microphone into operation  
̈ Insert the batteries or the BA 2015 accupack as shown  
on the battery compartment cover. Observe correct  
polarity when inserting the batteries/accupack.  
ƹ
̈ Close the battery compartment cover ƹ.  
̈ Push the battery compartment into the radio micro-  
phone’s body.  
̈ Screw the lower part of the radio microphone back to  
the radio microphone’s body ¿.  
Charging the accupack  
To charge the radio microphone with the BA 2015 accupack  
(see “Accessories and spare parts” on page 31) installed:  
̈ Insert the radio microphone into the LA 2 charging  
adapter (see “Accessories and spare parts” on page 31)  
until it locks into place.  
LA 2  
L 2015  
̈ Plug the LA 2 charging adapter with the inserted radio  
microphone into the L 2015 charger (see “Accessories  
and spare parts” on page 31).  
The LA 2 charging adapter and L 2015 charger can  
only charge the radio microphone with the BA 2015  
accupack installed. Standard batteries (primary  
cells) or individual rechargeable battery cells cannot  
be charged in this way.  
9
 
 
Putting the radio microphone into operation  
Changing the microphone head  
The microphone head ³ is easy to change.  
̈ Unscrew the microphone head ³.  
³
Do not touch the contacts of the radio microphone  
nor the contacts of the microphone head ³. The  
contacts can become dirty or damaged if touched.  
When unscrewing the microphone head ³ during  
operation, the muting function is automatically acti-  
vated. “MUTE” appears on the display panel.  
When screwing the microphone head ³ back to the  
radio microphone, the muting is canceled. “MUTE”  
disappears from the display panel.  
̈ Screw the desired microphone head to the radio micro-  
phone.  
The radio microphone is operational again.  
10  
 
 
Putting the radio microphone into operation  
Changing the color-coded protection ring  
The color-coded protection ring ¾ prevents the multi-  
function switch from accidental operation.  
Protection rings ¾ in different colors are available as acces-  
sories (see “Accessories and spare parts” on page 31). The  
protection rings allow you to clearly identify each radio  
microphone.  
̈ Remove the color-coded protection ring ¾ as shown.  
¾
¾
̈ Put on a new protection ring as shown.  
¾
¾
11  
 
 
Using the radio microphone  
Using the radio microphone  
CAUTION! Reduced transmission range  
If you touch the antenna º of the radio micro-  
phone, the transmission range will be consid-  
erably reduced!  
º
̈ Only hold the radio microphone by its  
body.  
To establish a transmission link, proceed as follows:  
1. Switch the receiver on  
(see the instruction manual of the receiver).  
2. Switch the radio microphone on (see next section).  
The transmission link is established and the display  
backlighting of the receiver changes from red to orange.  
It is vital to observe the notes on frequency  
selection on page 27.  
If you cannot establish a transmission link between radio  
microphone and receiver, refer to the chapter “Synchro-  
nizing the radio microphone with a receiver” on page 27.  
Switching the radio microphone on/off  
»
µ
Ƹ
To switch the radio microphone on (online operation):  
ON/OFF  
̈ Briefly press the ON/OFF button Ƹ.  
The radio microphone transmits an RF signal.  
The red ON LED µ lights up. The standard  
display “Frequency/Name” appears on the  
display panel. The MIC button » lights up red.  
The transmission icon is displayed.  
12  
 
     
Using the radio microphone  
You can switch the radio microphone on and  
deactivate the RF signal on switch-on. For more  
information, see next section.  
To switch the radio microphone off:  
̈ If necessary, deactivate the lock mode (see next  
section).  
ON/OFF  
̈ Press the ON/OFF button Ƹ until “OFF” appears  
on the display panel. The red ON LED µ and the  
MIC button » go off. The display panel turns off.  
When in the operating menu, pressing the ON/  
OFF button Ƹ cancel your entry (ESC function) and  
return you to the current standard display.  
To switch the radio microphone on and to deactivate the  
RF signal on switch-on (offline operation):  
ON/OFF  
̈ Keep the ON/OFF button pressed until “RF Mute  
On?” appears on the display panel.  
̈ Press the multi-function switch.  
The transmission frequency is displayed but the  
radio microphone does not transmit an RF signal.  
The transmission icon is not displayed.  
The MIC button » goes off. When the pilot tone  
function is activated on both radio microphone  
and receiver, “RF Mute” appears on the receiver’s  
display panel.  
MHz  
531.375  
ew300 G3  
P
MUTE  
AF  
Use this function to save battery power or to  
prepare a radio microphone for use during live oper-  
ation without causing interference to existing trans-  
mission links.  
To activate the RF signal:  
ON/OFF  
̈ Briefly press the ON/OFF button Ƹ.  
RF Mute Off?” appears on the display panel.  
̈ Press the multi-function switch.  
The transmission icon is displayed again.  
13  
 
 
Using the radio microphone  
Deactivating the lock mode temporarily  
You can activate or deactivate the automatic lock mode via  
the “Auto Lock” menu item (see page 23).  
If the lock mode is activated, you have to temporarily deac-  
tivate it In order to be able to operate the radio microphone:  
̈ Press the multi-function switch.  
Locked“ appears on the display panel.  
̈ Move the multi-function switch.  
Unlock?” appears on the display panel.  
̈ Press the multi-function switch again.  
The lock mode is temporarily deactivated.  
How you are using the radio microphone deter-  
mines how long the lock mode remains deacti-  
vated:  
When you are in the operating menu  
The lock mode remains deactivated until you  
exit the operating menu.  
When one of the standard displays is shown  
The lock mode is automatically activated after  
10 seconds.  
The lock mode icon flashes prior to the lock mode being  
activated again.  
MHz  
531.375  
ew300 G3  
P
MUTE  
AF  
Muting the audio signal or deactivating  
the RF signal  
»
The MIC button » allows you to mute the audio signal or to  
deactivate the RF signal.  
Via the “Mute Mode” menu item, you can set the desired  
function of the MIC button »:  
Setting  
MIC button » ... Function  
AF On/Off” Press briefly  
Mutes the audio signal  
permanently  
Unmutes the audio  
signal permanently  
14  
 
     
Using the radio microphone  
Setting  
MIC button » ... Function  
RF On/Off” Press briefly  
Deactivates the  
RF signal  
(offline operation)  
Activates the RF signal  
(online operation)  
Push To  
Mute”  
Keep pressed  
Keep pressed  
No function  
Mutes the audio signal  
temporarily  
(cough function)  
Push To  
Talk*  
Unmutes the audio  
signal temporarily  
(speech function)  
Disabled”  
* If you select “Push To Talk”, the radio microphone will be  
muted until you press the MIC button.  
̈ From the “Mute Mode” menu item, select the desired  
setting (see page 25).  
̈ Exit the operating menu.  
̈ Briefly press the MIC button » or keep it pressed.  
The radio microphone reacts as indicated in the table.  
The current state of the muting function or the  
RF signal is displayed on the display panel of the  
radio microphone (see next section).  
An additional display of the muting function  
appears on the receiver’s display panel when  
the pilot tone function is activated on both radio  
microphone and receiver  
and, in addition,  
this display has been activated via the “Warn-  
ings” menu item on the receiver (see the instruc-  
tion manual of the receiver).  
»
MHz  
531.375  
ew300 G3  
AF P  
MUTE  
Audio signal is muted  
MIC button »:  
not backlit  
Radio microphone’s display MUTEis displayed  
panel:  
Receiver’s display panel:  
TX Mute” is displayed*  
* only when activated on the receiver (see above)  
15  
 
 
Using the radio microphone  
Audio signal is activated (muting is deactivated)  
MIC button »:  
backlit in red  
Radio microphone’s display MUTEis not displayed  
panel:  
Receiver’s display panel:  
TX Mute” is not displayed  
not backlit  
RF signal is deactivated  
MIC button »:  
Radio microphone’s display transmission icon is not  
panel:  
displayed, “MUTEis  
displayed  
Receiver’s display panel:  
RF Mute” is displayed*  
* only when activated on the receiver (see above)  
RF signal is activated  
MIC button »:  
backlit in red  
Radio microphone’s display transmission icon is  
panel:  
displayed, “MUTEis not  
displayed  
Receiver’s display panel:  
RF Mute” is not displayed  
You can also deactivate the RF signal on switch-on.  
For more information, refer to the chapter  
“Switching the radio microphone on/off” on  
page 13.  
Using the ON/OFF button, you can also activate/  
deactivate the RF signal during operation. To do so,  
briefly press the ON/OFF button and proceed as  
described on page 13.  
Selecting a standard display  
̈ Move the multi-function switch to select a  
standard display.  
Contents of the display Selectable standard display  
Frequency/Name”  
531.375MHz  
ew300 G3  
AF P  
MUTE  
Frequency bank/Channel/  
Frequency”  
B.Ch: 20M.2H4z  
531.375  
AF P  
MUTE  
Name/Frequency bank/  
Channel”  
ew300 G3  
B.Ch: 20.24  
AF P  
MUTE  
16  
 
 
Using the operating menu  
Using the operating menu  
A special feature of the Sennheiser ew G3 series is the  
consistent, intuitive menu structure of transmitters and  
receivers. As a result, adjustments to the settings can be  
made quickly – even in stressful situations, for example on  
stage or during a live show or presentation.  
Make use of the possibility to adjust settings via the  
operating menu of the receiver and to transfer these  
settings to the radio microphone.  
For more information on how to transfer settings to  
the radio microphone, refer to the instruction  
manual of your receiver. The relevant information is  
marked with the sync icon.  
The buttons  
Button  
Function of the button  
Press the  
ON/OFF  
button  
ON/OFF  
Switches the radio microphone on  
and off  
Cancels the entry and returns to  
the current standard display (ESC  
function)  
Activates/deactivates the RF signal  
(special function, see page 13)  
Press the  
multi-function  
switch  
Changes from the current standard  
display to the operating menu  
Calls up a menu item  
Enters a submenu  
Stores the settings and returns to the  
operating menu  
Move the  
multi-function  
switch  
Selects a standard display  
Changes to the next/previous menu  
item  
Changes the setting of a menu item  
17  
 
   
Using the operating menu  
Overview of the operating menu  
Main menu  
“Menu”  
Sensitivity  
Frequency Preset  
Name  
Auto Lock  
Advanced  
Exit  
Extended menu  
“Advanced Menu”  
Tune  
Mute Mode  
RF Power  
Pilot Tone  
LCD Contrast  
Reset  
Software Revision  
Exit  
Display  
Function of the menu item  
Main menu “Menu”  
Sensitivity  
Adjusts the sensitivity “AF”  
(see page 21)  
Frequency Preset Sets the frequency bank and the  
channel (see page 22)  
Name  
Enters the transmitter name  
(see page 22)  
Auto Lock  
Advanced  
Exit  
Activates/deactivates the lock mode  
(see page 23)  
Calls up the extended menu  
Advanced Menu” (see page 23)  
Exits the operating menu and returns  
to the current standard display  
Extended menu “Advanced Menu”  
Tune  
Sets the transmission frequencies for  
the frequency banks “U1” to “U6”  
(see page 23)  
Sets the frequency bank, the channel  
and the transmission frequency  
(frequency banks “U1” to “U6”)  
(see page 24)  
Mute Mode  
RF Power  
Pilot Tone  
LCD Contrast  
Reset  
Sets the mode for the MIC button  
(see page 25)  
Adjusts the transmission power  
(see page 25)  
Activates/deactivates the pilot tone  
transmission (see page 25)  
Adjusts the contrast of the display  
panel (see page 26)  
Resets the settings made in the  
operating menu (see page 26)  
Software Revision Displays the current software revision  
(see page 26)  
Exit  
Exits the extended menu “Advanced  
Menu” and returns to the main menu  
18  
 
   
Using the operating menu  
Working with the operating menu  
If the lock mode is activated, you have to deactivate  
it In order to be able to work with the operating  
menu (see page 14).  
By way of example of the “Sensitivity” menu, this section  
describes how to use the operating menu.  
Changing from a standard display to the operating menu  
̈ Press the multi-function switch.  
The current standard display is replaced by the  
main menu.  
The last selected menu item is displayed.  
Selecting a menu item  
̈ Move the multi-function switch to change to the  
Sensitivity” menu item.  
The current setting of the selected menu item is  
displayed:  
Menu  
Sensitivity  
–12 dB  
Changing and storing settings  
Sensitivity  
–12 dB  
Sensitivity  
–36 dB  
Menu  
Sensitivity  
–12 dB  
Call up  
“Sensitivity”  
Select the desired  
setting  
Store the setting  
“Stored”  
̈ Press the multi-function switch to call up the  
menu item.  
̈ Move the multi-function switch to adjust the  
input sensitivity.  
̈ Press the multi-function switch to store the  
setting.  
Canceling an entry  
ON/OFF  
̈ Press the ON/OFF button to cancel the entry.  
The current standard display appears on the  
display panel.  
To subsequently return to the last edited menu item:  
̈ Press the multi-function switch repeatedly until  
the last edited menu item appears.  
19  
 
 
Using the operating menu  
Exiting a menu item  
̈ Change to the “Exit” menu item.  
Menu  
Exit  
̈ Confirm your selection.  
You return to the next higher menu level.  
To directly return to the current standard display:  
ON/OFF  
̈ Press the ON/OFF button.  
20  
 
Adjusting settings via the operating menu  
Adjusting settings via the  
operating menu  
Make use of the possibility to adjust settings  
via the operating menu of your receiver and to  
transfer these settings to the radio micro-  
phone.  
For more information, refer to the instruction  
manual of the receiver. The relevant informa-  
tion is marked with the sync icon.  
The main menu “Menu”  
Adjusting the input sensitivity – “Sensitivity”  
Sensitivity  
–12 dB  
Sensitivity  
–36 dB  
Menu  
Sensitivity  
–12 dB  
Call up  
“Sensitivity”  
Select the desired  
setting  
Store the setting  
“Stored”  
Adjustment range: 0 to 48 dB, adjustable in steps of 6 dB  
The audio level display “AFalways indicates the  
audio level, even if the radio microphone is muted,  
e.g. allowing you to check the adjusted sensitivity  
before live operation.  
B.Ch: 20.24  
531.375MHz  
P
MUTE  
AF  
Input sensitivity is  
adjusted...  
Effect/display  
... too high  
Close talking distances, speakers  
with loud voices or loud music  
passages cause overmodulation in  
the transmission link.  
The audio level display “AFቢ  
shows full deflection for the duration  
of the overmodulation.  
... correctly  
... too low  
The audio level display “AFቢ  
shows full deflection only during  
the loudest passages.  
The transmission link is undermodu-  
lated. This results in a signal with  
high background noise.  
21  
 
   
Adjusting settings via the operating menu  
The following figures are a guide to the best settings:  
Transmission situation  
Loud music/vocals  
Presentations  
Sensitivity setting  
48 to 18 dB  
18 to 12 dB  
12 to 0 dB  
Interviews  
Selecting the frequency bank and the channel manually –  
“Frequency Preset”  
Frequency Preset  
B.Ch: 1. 1  
Frequency Preset  
B.Ch: 20. 1  
Menu  
Frequency Preset  
B.Ch: 1. 1  
518.200 MHz  
531.375 MHz  
Call up “Frequency  
Preset”  
Select the frequency  
bank and confirm  
Select the channel;  
store the setting  
“Stored”  
When you are in the “Frequency Preset” menu item,  
the RF signal is deactivated.  
Overview of the frequency banks and channels:  
Frequency  
bank  
1” to “20” up to 24 per System bank:  
frequency frequencies are factory-  
bank preset  
U1” to “U6” up to 24 per User bank:  
frequency frequencies are freely  
bank selectable  
Channels  
Type  
When setting up multi-channel systems, please  
observe the following:  
Only the factory-preset frequencies within one  
frequency bank are intermodulation-free (see  
page 27).  
Radio microphone and receiver of a transmission  
link have to be set to the same frequency.  
̈ It is vital to observe the notes on frequency  
selection on page 27.  
Entering a name – “Name”  
Menu  
Name  
Name  
Lichael  
Name  
Michael  
Lichael  
Call up “Name”  
Enter a character  
and confirm  
Enter a character;  
store the setting  
“Stored”  
Via the “Name” menu, you can enter a freely selectable  
name (e.g. the name of the performer) for the radio micro-  
phone.  
22  
 
   
Adjusting settings via the operating menu  
The name can be displayed on the standard displays  
Frequency/Name” and “Name/Frequency bank/Channel”.  
The name can consist of up to 8 characters such as:  
letters (without pronounciation marks),  
numbers from 0 to 9,  
special characters and spaces.  
To enter a name, proceed as follows:  
̈ Move the multi-function switch to select a  
character.  
̈ Press the multi-function switch to change to the  
next segment/character or to store the complete  
entry.  
Activating/deactivating the automatic lock mode –  
“Auto Lock“  
Auto Lock  
Active  
Menu  
Auto Lock  
Inactive  
Auto Lock  
Active  
Store the setting  
Call up  
“Auto Lock”  
Select the desired  
setting  
“Stored”  
The lock mode prevents that the radio microphone is acci-  
dentally switched off or programed during operation.  
The lock mode icon ቦ  
on the current standard display  
indicates that the lock mode is activated.  
̈ Move the multi-function switch to select the  
desired setting  
.
For information on how to use the lock mode, refer to  
page 14.  
The extended menu “Advanced Menu”  
Setting transmission frequencies and frequency banks –  
“Tune”  
When you have selected one of the system banks  
and then select the “Tune” menu, the radio micro-  
phone automatically switches to channel 1 of the  
frequency bank “U1”. In this case, “U1.1” briefly  
appears on the display panel.  
Upon delivery, the channels of the frequency banks  
U1” to “U6” are not assigned a transmission  
frequency.  
When you are in the “Tune” menu item, the  
RF signal is deactivated.  
Via the “Tune” menu item, you can set a transmission  
frequency to be stored in the current channel or you can  
select a different channel in one of the frequency banks  
U1” to “U6” and assign this channel a transmission  
frequency.  
It is vital to observe the notes on frequency  
selection on page 27.  
23  
 
   
Adjusting settings via the operating menu  
Setting a transmission frequency for the current channel  
̈ Move the multi-function switch until the “Tune”  
menu item appears.  
̈ Press the multi-function switch.  
The frequency selection appears.  
Advanced Menu  
Tune  
Tune  
Tune  
543.200 MHz  
544.200 MHz  
B.Ch: U1. 1  
B.Ch: U1. 1  
543.200 MHz  
Call up “Tune”  
Select the MHz  
value and confirm  
Select the kHz  
value; store the  
setting  
“Stored”  
̈ Set the desired frequency.  
̈ Press the multi-function switch.  
Your settings are stored.  
You are back to the operating menu.  
Selecting a frequency bank and a channel and assigning  
this channel a frequency  
̈ Move the multi-function switch until the “Tune”  
menu item appears.  
̈ Press the multi-function switch until the  
frequency bank selection appears.  
Advanced Menu  
Tune  
Tune  
543.200 MHz  
B.Ch: U1. 1  
Tune  
543.200 MHz  
B.Ch: U1. 1  
543.200 MHz  
Call up “Tune”  
(special function)  
Set the frequency  
bank and the channel  
Set the frequency;  
store the setting  
“Stored”  
̈ Set the desired frequency bank.  
̈ Press the multi-function switch.  
The frequency selection appears.  
̈ Set the desired channel.  
̈ Press the multi-function switch.  
The frequency selection appears.  
̈ Set the desired frequency.  
̈ Press the multi-function switch.  
Your settings are stored.  
You are back to the operating menu.  
24  
 
 
Adjusting settings via the operating menu  
Setting the mode for the MIC button – “Mute Mode”  
Advanced Menu  
Mute Mode  
Mute Mode  
AF On/Off  
Mute Mode  
RF On/Off  
AF On/Off  
Call up  
“Mute Mode”  
Select the desired  
setting  
Store the setting  
“Stored”  
Setting  
Function  
AF On/Off”  
If you press the MIC button, the  
audio signal is muted.  
RF On/Off”  
If you press the MIC button, the  
radio signal is deactivated  
.
Push To Mute”  
Push To Talk*  
Disabled”  
The audio signal is muted as long as  
you press the MIC button.  
The audio signal is activated as long  
as you press the MIC button.  
The function is deactivated.  
* If you select “Push To Talk”, the radio microphone will be  
muted until the MIC button is pressed.  
For information on how to use the MIC button, refer to  
page 14.  
Adjusting the transmission power – “RF Power”  
Advanced Menu  
RF Power  
RF Power  
Standard  
RF Power  
Low  
Standard  
Call up  
“RF Power”  
Select the desired  
setting  
Store the setting  
“Stored”  
Via the “RF Power” menu item, you can adjust the transmis-  
sion power in two steps.  
It is vital to observe the notes on the supplied  
frequency information sheet.  
Activating/deactivating the pilot tone transmission –  
“Pilot Tone”  
Advanced Menu  
Pilot Tone  
Active  
Pilot Tone  
Inactive  
Pilot Tone  
Active  
Call up  
“Pilot Tone”  
Select the desired  
setting  
Store the setting  
“Stored”  
The radio microphone adds an inaudible signal, known as  
the pilot tone, to the transmitted signal. The receiver  
detects and evaluates the pilot tone.  
The pilot tone supports the receiver’s squelch function  
(Squelch) and protects against interference due to  
RF signals from other devices.  
25  
 
   
Adjusting settings via the operating menu  
Devices of the ew 300 G1 series (generation 1) do not  
support the pilot tone function. Therefore, please observe  
the following when combining a radio microphone or  
receiver of the ew 300 G3 series (generation 3) with  
devices from an earlier evolution wireless generation:  
Radio  
microphone  
Receiver  
Make sure to ...  
w G3/ w G2  
w G3/ w G2 ... activate the pilot  
tone function on both  
radio microphone and  
receiver.  
w G3  
w G1  
w G1  
... deactivate the pilot  
tone function on the  
ew 300 G3 radio  
microphone.  
w G3  
... deactivate the pilot  
tone function on the  
ew 300 G3 receiver.  
Adjusting the contrast of the display panel –  
“LCD Contrast“  
You can adjust the contrast of the display panel in 16 steps.  
Resetting the settings made in the operating menu –  
“Reset”  
Advanced Menu  
Reset  
Reset  
Yes  
Select the desired  
setting; apply the  
setting  
Call up “Reset”  
“Stored”  
When resetting the settings made in the operating menu,  
only the selected settings for the pilot tone and for the  
frequency banks “U1” to “U6” remain unchanged.  
For an overview of the factory-preset default settings, refer  
to the supplied frequency information sheet.  
Displaying the software revision – “Software Revision”  
You can display the current software revision of the radio  
microphone.  
̈ For information on software updates, visit the  
SKM 300 G3 product page at www.sennheiser.com.  
26  
 
   
Synchronizing the radio microphone with a receiver  
Synchronizing the radio  
microphone with a receiver  
When synchronizing the radio microphone with a receiver,  
please observe the following:  
̈ Only use a transmitter and a receiver from the  
same frequency range (see the type plate on the  
transmitter and the receiver).  
̈ Make sure that the desired frequencies are listed  
in the enclosed frequency information sheet.  
̈ Make sure that the desired frequencies are  
approved and legal in your country and, if neces-  
sary, apply for an operating license.  
Synchronizing the radio microphone with  
the receiver – individual operation  
Upon delivery, the radio microphone and the receiver are  
synchronized with each other.  
If, however, you cannot establish a transmission link  
between radio microphone and receiver, you have to  
synchronize the channels of the devices.  
For information on automatic synchronization of the radio  
microphone with the receiver (individual operation), refer  
to the instruction manual of the receiver. This information  
is marked with the  
icon.  
Alternatively, you can set the channel on the radio micro-  
phone manually:  
̈ Make sure that you set the radio microphone to the  
same frequency bank and the same channel as the  
receiver (see page 22).  
If you still cannot establish a transmission link, refer to the  
chapter “If a problem occurs ...” on page 30.  
Synchronizing radio microphones with  
receivers – multi-channel operation  
Combined with ew 300 G3 receivers, ew 300 G3 radio  
microphones can form transmission links that can be used  
in multi-channel systems.  
For information on automatic synchronization of radio  
microphones with receivers (multi-channel operation),  
refer to the instruction manual of your receiver.  
For more information on multi-channel operation, visit the  
SKM 300 G3 product page at www.sennheiser.com.  
27  
 
     
Cleaning the radio microphone  
Cleaning the radio microphone  
CAUTION! Liquids can damage the electronics of the  
radio microphone!  
Liquids entering the housing of the device  
can cause a short-circuit and damage the  
electronics.  
̈ Keep all liquids away from the radio micro-  
phone.  
̈ Use a cloth to clean the radio microphone from time to  
time.  
̈ Do not use any solvents or cleansing agents.  
To clean the sound inlet basket of the microphone head  
(MMD 835-1, MMD 845-1, MME 865-1):  
̈ Unscrew the upper sound inlet basket from the micro-  
phone head by turning it counterclockwise (see  
diagram).  
CAUTION! Liquids will damage the microphone module!  
Liquids will damage the microphone module.  
̈ Only clean the upper sound inlet basket.  
̈ Remove the foam insert.  
̈ To clean the sound inlet basket:  
– Use a cloth to clean the upper sound inlet basket from  
the inside and outside.  
OR  
– Scrub with a brush and rinse with clear water.  
̈ If necessary, clean the foam insert with a mild detergent  
or replace the foam insert.  
̈ Dry the upper sound inlet basket.  
̈ Dry the foam insert.  
̈ Reinsert the foam insert.  
̈ Replace the sound inlet basket on the microphone head  
and screw it tight.  
You should also clean the contact rings of the microphone  
head from time to time:  
̈ Wipe the contact rings of the microphone head with a  
cloth.  
28  
 
 
Recommendations and tips  
Recommendations and tips  
... for optimum sound  
Hold the radio microphone in the middle of the micro-  
phone body. Holding it close to the sound inlet basket  
will influence the radio microphone’s pick-up pattern.  
You can vary the bass reproduction by increasing/  
decreasing the talking distance.  
For best results, make sure that the sensitivity is  
correctly adjusted.  
... for optimum reception  
Transmission range depends to a large extent on loca-  
tion and can vary from about 10 m to about 150 m.  
There should be a “free line of sight” between trans-  
mitting and receiving antennas.  
To avoid overloading the receiver, observe a minimum  
distance of 5 m between transmitting and receiving  
antennas.  
Only hold the radio microphone by its body. If you  
touch the antenna of the radio microphone, the trans-  
mission range will be considerably reduced.  
... for multi-channel operation  
For multi-channel operation, you should only use the  
channels within one frequency bank. Each of the  
frequency banks “1” to “20” accommodates factory-  
preset frequencies which are intermodulation-free.  
When using several transmitters simultaneously,  
interference can be avoided by maintaining  
a
minimum distance of 20 cm between two transmitters.  
29  
 
 
If a problem occurs ...  
If a problem occurs ...  
Problem  
Possible cause  
Possible solution  
Radio micro- Lock mode is  
Deactivate the lock  
mode (see page 14).  
phone  
activated  
cannot be  
operated,  
Locked”  
appears on  
the display  
panel  
No opera-  
Batteries are flat or Replace the batteries  
tion indica- accupack is flat  
tion  
or recharge the  
accupack  
(see page 8).  
No RF signal Radio microphone  
Set the radio micro-  
at the  
receiver  
and receiver are not phone to the same  
on the same channel channel as the  
receiver.  
Synchronize the  
radio microphone  
with the receiver  
(see page 17).  
Transmission range Reduce the distance  
is exceeded  
between radio micro-  
phone and receiving  
antennas.  
Increase the trans-  
mission power  
(see page 25).  
RF signal is  
deactivated  
(“RF Mute“)  
Activate the RF  
signal (see page 14).  
RF signal  
available,  
no audio  
signal,  
Receiver’s squelch  
threshold is  
adjusted too high  
Reduce the squelch  
threshold setting on  
the receiver.  
Radio microphone  
doesn’t transmit a  
pilot tone  
Activate or deacti-  
vate the pilot tone  
transmission (see  
page 25).  
MUTE”  
appears on  
the display  
panel  
Audio signal Radio microphone’s Adjust the input  
has a high  
level of  
sensitivity is  
adjusted too low/  
sensitivity  
(see page 21).  
background too high  
noise or  
audio signal  
is distorted  
If a problem occurs that is not listed in the above table or if  
the problem cannot be solved with the proposed solutions,  
please contact your local Sennheiser partner for assistance.  
To find a Sennheiser partner in your country, search at  
30  
 
 
Accessories and spare parts  
Accessories and spare parts  
The following accessories are available from your specialist  
dealer:  
Cat. No. Product name and description  
009950 BA 2015 accupack  
009828 L 2015 charger  
503162 LA 2 charging adapter  
503168 CC 3 system case  
004839 MZW 1 wind and pop shield  
002155 MZQ 1 microphone clamp  
Microphone heads  
502577 MMD 935-1 microphone head,  
dynamic, cardioid  
502579 MMD 945-1 microphone head,  
dynamic, super-cardioid  
502575 MMD 835-1 microphone head,  
dynamic, cardioid  
502576 MMD 845-1 microphone head,  
dynamic, super-cardioid  
501581 MME 865-1 microphone head,  
condenser, super-cardioid  
502582 MMK 965-1 BK microphone head, color black  
externally polarized dual diaphragm condenser  
microphone, cardioid/super-cardioid (switch-  
able)  
502583 MMK 965-1 BL microphone head, color blue  
externally polarized dual diaphragm condenser  
microphone, cardioid/super-cardioid (switch-  
able)  
502584 MMK 965-1 NI microphone head, color nickel  
externally polarized dual diaphragm condenser  
microphone, cardioid/super-cardioid (switch-  
able)  
31  
 
 
Specifications  
Specifications  
RF characteristics  
Modulation  
wideband FM  
Frequency ranges  
516–558, 566–608,  
626–668, 734–776,  
780–822, 823–865 MHz  
(A–E, G, see page 3)  
Transmission frequencies  
1,680 frequencies, tune-  
able in steps of 25 kHz  
20 frequency banks, each  
with up to 24 factory-  
preset channels  
6 frequency banks, each  
with up to 24 user  
programmable channels  
Switching bandwidth  
Nominal/peak deviation  
Frequency stability  
42 MHz  
± 24 kHz/± 48 kHz  
±15 ppm  
RF output power at 50 Ω,  
switchable  
typ. 10 mW (Low)  
typ. 30 mW (Standard)  
Pilot tone squelch  
can be switched off  
AF characteristics  
Compander system  
AF frequency response  
Sennheiser HDX  
80–18,000 Hz  
Signal-to-noise ratio  
(1 mV, peak deviation)  
115 dBA  
THD  
0.9%  
Adjustment range of input  
sensitivity  
48 dB, adjustable  
in 6-dB steps  
Overall device  
Temperature range  
Power supply  
10°C to +55°C  
2
AA size batteries, 1.5 V  
or BA 2015 accupack  
Nominal voltage  
2.4 V  
Current consumption:  
• at nominal voltage  
typ. 180 mA (30 mW)  
• with switched-off radio  
microphone  
25 μA  
Operating time  
typ. 8 hrs  
Dimensions  
approx. 50 x 265 mm  
approx. 450 g  
Weight (incl. batteries)  
32  
 
 
Specifications  
In compliance with  
Europe  
EMC  
EN 301489-1/-9  
EN 300422-1/-2  
EN 60065  
Radio  
Safety  
EN 62311 (SAR)  
Approved by  
Canada  
Industry Canada RSS 123  
IC: 2099A-G3SKMEM  
limited to 806 MHz  
USA  
FCC-Part 74  
FCC-ID: DMO G3SKMEM  
limited to 698 MHz  
Microphone heads  
MMD 835-1 MMD 845-1 MME 865-1  
Microphone  
type  
dynamic  
dynamic  
condenser  
Sensitivity  
2.1 mV/Pa  
cardioid  
1.6 mV/Pa  
1.6 mV/Pa  
Pick-up  
pattern  
super-  
cardioid  
super-  
cardioid  
Max. SPL  
154 dB SPL 154 dB SPL 152 dB SPL  
Polar diagrams and frequency response  
curves of the microphone heads  
Polar diagram MMD 835-1 Polar diagram MMD 845-1  
0°  
0°  
0
0
30°  
30°  
30°  
30°  
5
5
10  
15  
20  
25  
dB  
10  
15  
20  
25  
dB  
60°  
60°  
60°  
60°  
90°  
90°  
90°  
90°  
120°  
120°  
120°  
120°  
150°  
150°  
150°  
150°  
125 Hz  
125 Hz  
2000 Hz  
2000 Hz  
4000 Hz  
8000 Hz  
16000 Hz  
250 Hz  
180°  
180°  
250 Hz  
500 Hz  
4000 Hz  
8000 Hz  
500 Hz  
1000 Hz  
16000 Hz  
1000 Hz  
Polar diagram MME 865-1  
0°  
0
30°  
30°  
5
10  
15  
20  
25  
dB  
60°  
60°  
90°  
90°  
120°  
120°  
125 Hz  
150°  
150°  
2000 Hz  
4000 Hz  
8000 Hz  
16000 Hz  
250 Hz  
500 Hz  
180°  
1000 Hz  
33  
 
 
Specifications  
Frequency response curve MMD 835-1  
dBV  
-30  
-40  
-50  
-60  
-70  
-80  
50  
100  
200  
500  
1.10k00  
2k  
5k  
101.0k00 20k Hz  
Frequency response curve MMD 845-1  
dBV  
-30  
-40  
-50  
-60  
-70  
-80  
50  
100  
200  
500  
1.10k00  
2k  
5k  
101.0k00 20k Hz  
Frequency response curve MME 865-1  
dBV  
-30  
-40  
-50  
-60  
-70  
-80  
50  
100  
0°  
200  
500  
1.10k00  
2k  
5k  
101.0k00 20k Hz  
90°  
34  
 
Manufacturer Declarations  
Manufacturer Declarations  
Warranty  
Sennheiser electronic GmbH & Co. KG gives a warranty of  
24 months on this product.  
For the current warranty conditions, please visit our web  
site at www.sennheiser.com or contact your Sennheiser  
partner.  
In compliance with the following requirements  
RoHS Directive (2002/95/EC)  
WEEE Directive (2002/96/EC)  
Please dispose of the radio microphone at the end  
of its operational lifetime by taking it to your local  
collection point or recycling center for such equip-  
ment.  
Battery Directive (2006/66/EC)  
Die The supplied batteries or rechargeable batteries  
can be recycled. Please dispose of them as special  
waste or return them to your specialist dealer. In  
order to protect the environment, only dispose of  
exhausted batteries.  
CE Declaration of Conformity  
0682  
R&TTE Directive (1999/5/CE)  
Before putting the device into operation, please observe  
the respective country-specific regulations.  
Statements regarding FCC and Industry Canada  
This device complies with Part 15 of the FCC Rules and with  
RSS-210 of Industry Canada. Operation is subject to the  
following two conditions: (1) this device may not cause  
harmful interference, and (2) this device must accept any  
interference received, including interference that may  
cause undesired operation.  
This equipment has been tested and found to comply with  
the limits for a Class B digital device, pursuant to Part 15 of  
the FCC Rules. These limits are designed to provide reason-  
able protection against harmful interference in a residential  
installation. This equipment generates, uses and can  
radiate radio frequency energy and, if not installed and  
used in accordance with the instructions, may cause  
harmful interference to radio communications. However,  
there is no guarantee that interference will not occur in a  
particular installation. If this equipment does cause harmful  
interference to radio or television reception, which can be  
determined by turning the equipment off and on, the user  
is encouraged to try to correct the interference by one or  
more of the following measures:  
35  
 
 
Manufacturer Declarations  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and  
receiver.  
Connect the equipment into an outlet on a circuit  
different from that to which the receiver is connected.  
Consult the dealer or an experienced radio/TV technician  
for help.  
This class B digital device complies with the Canadian  
ICES-003.  
Changes or modifications made to this equipment not  
expressly approved by Sennheiser electronic Corp. may void  
the FCC authorization to operate this equipment.  
Before putting the device into operation, please observe the  
respective country-specific regulations!  
36  
 
Index  
Index  
A
Accupack  
charging 9  
inserting 8  
Activating/deactivating  
lock mode (Auto Lock) 23  
pilot tone 25  
Adjusting  
contrast (LCD Contrast) 26  
input sensitivity (Sensitivity) 21  
transmission power 25  
Advanced Menu (extended menu)  
overview 18  
settings 23  
AF (audio level) 7  
Audio signal, muting 14  
Auto Lock (activating/deactivating the lock mode) 23  
B
Batteries, inserting 8  
Buttons (function of the ~) 17  
C
Channel  
assigning a frequency 24  
overview 3  
selecting (Frequency Preset) 22  
selecting (Tune) 23  
Charging  
accupack 9  
battery status display 7  
Cleaning (radio microphone) 28  
Color-coded protection ring, changing 11  
D
Deactivating  
lock mode temporarily 14  
Displays  
adjusting the contrast (LCD Contrast) 26  
charge status 7  
overview 7  
standard displays 16  
F
Factory default settings (resetting the settings in the  
operating menu) 26  
Frequency  
preset frequencies 3  
~ ranges 3  
selecting ~ presets 22  
setting the transmission ~ 23  
Frequency bank  
overview 3  
selecting (Frequency Preset) 22  
~ system 3  
Frequency Preset (selecting a frequency bank/  
channel) 22  
I
Infra-red transmission 27  
Inserting (batteries/accupack) 8  
L
37  
 
 
Index  
LCD Contrast (contrast of the display panel) 26  
Lock mode  
activating/deactivating (Auto Lock) 23  
deactivating temporarily 14  
Locked (lock mode activated) 14  
M
Menu (main menu)  
overview 18  
settings 21  
MIC button  
mode 14  
setting the mode for the ~ 25  
Microphone heads  
changing 10  
changing the color-coded protection ring 11  
overview 4  
pick-up patterns 4  
polar diagrams/frequency response curves 33  
suitable ~ 4  
Modulation (input sensitivity/adjusting the  
sensitivity) 21  
Multi-channel operation 27  
Mute Mode (setting the mode for the MIC button) 25  
Muting (audio signal) 14  
N
Name (entering a name) 22  
O
Offline operation (RF signal deactivated) 13  
Online operation (RF signal activated) 12  
P
Pilot tone  
activating/deactivating 25  
transmission 25  
Push To Mute (cough function) 15  
Push To Talk (transmit function) 15  
R
Radio microphone  
cleaning 28  
resetting (Reset) 26  
switching on/off 12  
synchronizing with receiver 27  
Reset (resetting the settings in the operating menu) 26  
RF Mute On/Off (activating/deactivating the RF signal) 13  
RF Power (adjusting the transmission power) 25  
RF signal  
activating (online operation) 12  
deactivating (during operation) 16  
deactivating (offline operation) 13  
deactivating (using the MIC button) 14  
S
Selecting (Tune) 24  
Sensitivity (adjusting the input sensitivity) 21  
Setting  
mode for the MIC button 25  
Setting up  
multi-channel system 27  
transmission link 27  
Synchronizing (radio microphone/receiver) 27  
T
38  
 
Index  
Transmission frequency  
selecting (Frequency Preset) 22  
setting (Tune) 23  
Transmission link, establishing 27  
Troubleshooting 30  
Tune (setting a transmission frequency) 23  
U
Unlock (deactivating the lock mode) 14  
Using  
operating menu 19  
radio microphone 12  
39  
 

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