Sennheiser Automobile Accessories SR350 IEM User Guide

W
300 IEM  
SR350 IEM  
Instructions for use  
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Important safety instructions .......................................................................................  
The ew 300 IEM G2 systems ..........................................................................................  
Delivery includes ................................................................................................................  
Overview of operating controls ....................................................................................  
Stereo transmitter – front view (SR 350 IEM G2 twin transmitter) ....................  
Stereo transmitter – rear view ....................................................................................  
EK 300 IEM G2 stereo receiver .....................................................................................  
Indications and displays on the receiver ...................................................................  
2
4
5
5
6
6
7
8
9
SR 350 IEM G2 twin transmitter .................................................................................. 11  
Changing the transmission power (SR 350 IEM G2 only) ....................................... 15  
EK 300 IEM G2 receiver .................................................................................................. 17  
Using the components ..................................................................................................... 18  
Switching the components on/off .............................................................................. 18  
Adjusting the volume .................................................................................................... 19  
Adjusting the balance .................................................................................................... 19  
Activating/deactivating the lock mode ..................................................................... 19  
Attaching the receiver to clothing .............................................................................. 19  
The operating menu ......................................................................................................... 20  
The buttons ..................................................................................................................... 20  
Overview of menus ......................................................................................................... 21  
Working with the operating menu ............................................................................. 21  
Operating menu of the stereo transmitter ................................................................ 23  
Switching between channel banks ............................................................................. 28  
in the channel bank “U” ................................................................................................ 28  
(receiver only) ................................................................................................................. 28  
Adjusting the squelch threshold (receiver only) ...................................................... 29  
Limiting the volume at the headphone output  
(receiver only) ................................................................................................................. 30  
(receiver only) ................................................................................................................. 30  
Adjusting the sensitivity (transmitter only) ............................................................ 30  
Loading the factory-preset default settings ............................................................. 32  
Adjusting the contrast of the graphic display (transmitter only) ....................... 32  
Stereo/mono selection (transmitter only) ................................................................ 33  
Activating/deactivating the lock mode ..................................................................... 33  
Exiting the operating menu .......................................................................................... 33  
If a problem occurs ... ....................................................................................................... 34  
Error checklist .................................................................................................................. 34  
Recommendations and tips .......................................................................................... 35  
Care and maintenance ..................................................................................................... 35  
Additional information .................................................................................................... 36  
HDX noise reduction ....................................................................................................... 36  
Wireless transmission systems ................................................................................... 36  
Squelch ............................................................................................................................. 37  
Specifications ...................................................................................................................... 38  
Connector assignment ................................................................................................... 39  
Accessories and spare parts .......................................................................................... 40  
Manufacturer Declarations ............................................................................................ 41  
Thank you for choosing Sennheiser!  
We have designed this product to give you reliable operation over many years. Over 60 years  
of accumulated expertise in the design and manufacture of high-quality electro-acoustic  
equipment have made Sennheiser a world-leading company in this field.  
Please take a few moments to read these instructions carefully, as we want you to enjoy your  
new Sennheiser products quickly and to the fullest.  
1
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Important safety instructions  
1. Read these instructions.  
2. Keep these instructions. Always include these instructions when passing  
the devices on to third parties.  
3. Heed all warnings.  
4. Follow all instructions.  
5. Do not use the devices near water.  
6. Clean only with a dry cloth.  
7. Do not block any ventilation openings. Install in accordance with these  
instructions.  
8. Do not install near any heat sources such as radiators, heat registers,  
stoves, or other devices (including amplifiers) that produce heat.  
9. The devices should be operated only from the type of power source  
indicated on the mains plug. The devices must only be connected to  
properly grounded power outlets.  
10. Protect the mains cable from being walked on or pinched, particularly at  
plugs, convenience receptacles, and the point where they exit from the  
device.  
11. Only use attachments/accessories specified by Sennheiser.  
12. Use only with the cart, stand, tripod, bracket, or table specified by the  
manufacturer, or sold with the device. When a cart is used, use caution  
when moving the cart/apparatus combination to avoid injury from tip-  
over.  
13. Unplug the devices during lightning storms or when unused for long  
periods of time.  
14. Refer all servicing to qualified service personnel.  
Servicing is required if the device has been damaged in any way, such as  
mains cable or plug damage, liquid has been spilled, objects have fallen  
inside, the device has been exposed to rain or moisture, does not  
operate properly or has been dropped.  
15. To completely disconnect the devices from the AC mains, disconnect the  
mains plug from the AC receptacle.  
16. WARNING: To reduce the risk of fire or electric shock, do not expose the  
devices to rain or moisture.  
17. Do not expose the devices to dripping or splashing and ensure that no  
objects filled with liquids, such as vases or coffee cups, are placed on the  
devices.  
18. The plug of the mains cable shall remain readily operable and easily  
accessible.  
2
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Hazard warnings on the rear of the transmitter (SR 350 IEM G2 only)  
The label shown on the left is attached to the rear of the transmitter. The  
symbols on this label have the following meaning:  
This symbol is intended to alert the user to the presence of uninsulated  
dangerous voltage within the transmitter’s enclosure that may be of  
sufficient magnitude to constitute risk of fire or electric shock.  
This symbol is intended to alert the user to the risk of electric shock if the  
transmitter is opened. There are no user serviceable parts inside. Refer  
servicing to qualified personnel only.  
This symbol is intended to alert the user to the presence of important  
operating and maintenance instructions in the literature accompanying this  
transmitter.  
Overloading  
Do not overload wall outlets and extension cables as this may result in fire  
and electric shock.  
Replacement parts  
When replacement parts are required, be sure the service technician has used  
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.  
Safety check  
Upon completion of any service or repairs to this device, ask the service  
technician to perform safety checks to determine that the device is in safe  
operating order.  
Danger due to high volumes  
This is a professional transmission system. Commercial use is subject to the  
rules and regulations of the trade association responsible. Sennheiser, as the  
manufacturer, is therefore obliged to expressly point out possible health risks  
arising from use.  
This system is capable of producing sound pressure exceeding 85 dB(A).  
85 dB(A) is the sound pressure corresponding to the maximum permissible  
volume which is by law (in some countries) allowed to affect your hearing for  
the duration of a working day. It is used as a basis according to the  
specifications of industrial medicine. Higher volumes or longer durations can  
damage your hearing. At higher volumes, the duration must be shortened in  
order to prevent hearing damage. The following are sure signs that you have  
been subjected to excessive noise for too long a time:  
y You can hear ringing or whistling sounds in your ears.  
y You have the impression (even for a short time only) that you can no longer  
hear high notes.  
Reception interference due to high transmission power  
The SR 350 IEM G2 twin transmitter can be switched to a transmission power  
of 100 mW. Depending on the selected frequency, this can affect the  
reception of other wireless systems.  
3
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Intended use of the devices  
Intended use of the ew 300 IEM G2 series devices includes:  
y having read these instructions especially the chapter “Important safety  
instructions” on page 2,  
y using the devices within the operating conditions and limitations described  
in this instruction manual.  
“Improper use” means using the devices other than as described in these  
instructions, or under operating conditions which differ from those described  
herein.  
The ew 300 IEM G2 systems  
With the Sennheiser evolution wireless in-ear monitoring systems  
ew 300 IEM G2 (suitable for both stage and broadcast use), musicians, video  
and sound amateurs, reporters/broadcasters, etc. can directly monitor the  
received sound signals without troublesome cables or monitor speakers  
being required. In addition, the system can also be used for any application  
where talkback signals are to be transmitted.  
The evolution wireless in-ear monitoring systems ew 300 IEM G2 are high-  
quality state-of-the-art RF transmission systems with a high level of  
operational reliability and ease of use. The transmitters and the receiver  
permit wireless transmission with studio-quality sound. The excellent  
transmission reliability of the ew 300 IEM G2 systems is based on the use of  
y further optimized PLL synthesizer and microprocessor technology,  
y the HDX noise reduction system,  
y the pilot tone squelch control (during stereo operation),  
y and the scan function for scanning the channel banks for free channels.  
The ew 300 IEM series offers two systems:  
y the ew 300 IEM G2 system  
(SR 300 IEM G2 stereo transmitter, EK 300 IEM G2 stereo receiver)  
y and the SR 350 IEM G2 twin transmitter  
The EK 300 IEM G2 can also be used with the SR 350 IEM G2 twin transmitter.  
The SR 350 IEM G2 twin transmitter consists of two complete SR 300 IEM G2  
stereo transmitters, but offers some advantages such as  
y easy rack mounting,  
y a built-in mains unit  
y and a switchable transmission power for optimum operational reliability  
under varying transmission conditions.  
4
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The channel bank system  
The ew 300 IEM G2 systems are available in six UHF frequency ranges with 1440 transmission/receiving frequencies  
per frequency range. Please note: Frequency usage is different for each country. Your Sennheiser agent will have all  
the necessary details on the available legal frequencies for your area:  
Range A: 518 to 554 MHz  
Range B: 626 to 662 MHz  
Range C: 740 to 776 MHz  
Range D: 786 to 822 MHz  
Range E: 830 to 866 MHz  
Range G: 572 to 608 MHz  
The transmitters and the receiver of the ew 300 IEM G2 systems have nine channel banks with up to 12 switchable  
channels each.  
Channel 1  
Channel 2  
Factory-preset frequency  
Factory-preset frequency  
Bank 1...8  
Factory-preset frequency  
Channel 12  
selectable frequency  
selectable frequency  
Channel 1  
Channel 2  
Bank U  
selectable frequency  
Channel 12  
The channel banks “1” to “8” have up to 12 switchable channels that are factory-preset to a transmission/receiving  
frequency (see enclosed frequency table). These transmission/receiving frequencies cannot be changed but have  
been preset so that e.g. country-specific regulations on frequency usage are taken into account (see “Type  
approvals” on page 39). For detailed information, please refer to the enclosed frequency data sheets and to the  
country-specific frequency and transmission power overviews.  
An advantage of the factory-preset frequencies is that  
y the system is ready for immediate use after switch-on,  
y several transmission systems can be operated simultaneously on the preset channels without causing  
intermodulation interference.  
Delivery includes  
Depending on the purchased system, delivery includes:  
ew 300 IEM G2 system  
SR 350 IEM G2  
y 1 EK 300 IEM G2 stereo receiver  
y 1 SR 300 IEM G2 stereo transmitter  
y 2 batteries  
y 1 SR 350 IEM G2 stereo twin transmitter  
y 2 telescopic antennas for SR 350 IEM G2  
y 1 mains cable  
y 1 telescopic antenna for SR 300 IEM G2  
y 1 NT 2-1 mains unit  
y Instructions for use  
y 1 frequency data sheet  
y 1 pair of IE 4 earphones  
y Frequency and transmission power overviews  
y Instructions for use  
y 1 frequency data sheet  
y Frequency and transmission power overviews  
5
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Overview of operating controls  
Stereo transmitter – front view (SR 350 IEM G2 twin transmitter)  
³
·
»
¿
´
² ¶  
·
»
¿
´
² ¶  
³
Operating controls  
Graphic display panel  
³ Rack mount “ears”  
Display for the current channel bank “1...8, U”  
(preinstalled with the SR 350 IEM G2 only)  
Display for the current channel number “1 ... 12”  
· Headphone output (PHONES),  
“B.CH“ – abbreviation for channel bank and  
¼” (6.3 mm) jack socket  
channel number  
» Headphone volume control (VOL)  
¿ Graphic display, backlit  
´ ̄/̆ rocker button, backlit  
² SET button, backlit  
Alphanumeric display  
“MHz“ – appears when the frequency is displayed  
Level display for audio signal “AF I” (left and MONO),  
with “PEAK” warning  
ON button, backlit  
Level display for audio signal “AF II” (right),  
(serves as the ESC (cancel) key in the  
operating menu)  
with “PEAK” warning  
Lock mode icon  
(lock mode is activated)  
Note:  
For further illustrations and examples of the different  
standard displays, see “Selecting the standard display” on  
page 31.  
6
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Stereo transmitter – rear view  
Operating controls on the SR 350 IEM G2 twin transmitter  
º
¾
µ
¸
¹
Ƹ
ƹ
ƺ
ƻ
ƺ
¹
Ƹ
ƹ
º 3-pin IEC mains socket  
¾ Cable grip for power supply DC cable  
µ Label with hazard warnings  
¸ Type plate  
¹ Service interface;  
connection to the NET 1 network system  
Ƹ Audio input (AF IN BAL/UNBAL), XLR-3F socket (left and MONO)  
ƹ Audio input (AF IN BAL/UNBAL), XLR-3F socket (right)  
ƺ Antenna output (ANT A/B), BNC socket  
ƻ Transmission power switch (RF POWER)  
Operating controls on the SR 300 IEM G2 transmitter  
¾
º
Ƹ
ƹ
¹
¸
ƺ
º DC socket for connection of mains unit (DC IN)  
¾ Cable grip for power supply DC cable  
¸ Type plate  
¹ Service interface (DATA)  
Ƹ Audio input (AF IN BAL/UNBAL), XLR-3F socket (left and MONO)  
ƹ Audio input (AF IN BAL/UNBAL), XLR-3F socket (right)  
ƺ Antenna output (ANT), BNC socket  
7
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EK 300 IEM G2 stereo receiver  
·
»
³
Ƹ
¹
¸
¿
´
ቩ ቪ  
²
º
¾
µ
Operating controls  
LC display panel  
Alphanumeric display  
³ Headphone output (PHONES), 3.5 mm jack socket  
· Antenna  
“B.CH“ – appears when the channel bank and  
the channel number are displayed  
» Red LED for operation and  
battery status indication (ON/LOW BAT)  
“MHz“ – appears when the frequency is displayed  
¿ Green LED for RF signal indication (RF)  
´ Charging contacts  
4-step battery status display  
Lock mode icon  
(lock mode is activated)  
² SET button  
“PILOT” display  
̄/̆ rocker button (DOWN/UP)  
º Battery compartment  
¾ Battery compartment cover  
µ Battery compartment release button  
¸ ESC button  
(pilot tone evaluation is activated)  
“MUTE” display  
(audio output is muted)  
7-step level display for received audio signal “AF”  
7-step level display for received RF signal “RF”  
¹ LC display  
Ƹ On/off/volume control  
8
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Indications and displays on the transmitter  
Modulation display  
The level display for audio signal “AF” shows the modulation of the  
transmitter.  
When the transmitter’s audio input level is excessively high, the level display  
for audio signal “AF” shows full deflection.  
When the transmitter is overmodulated frequently or for an extended period  
of time, the text “PEAK” (backlit in red) flashes in alternation with the  
standard display.  
Button backlighting  
During standby operation, the ON button is backlit in red. When the  
transmitter is switched on, the SET button ² and the ̆/̄ button are  
additionally backlit in green.  
´ ²  
Indications and displays on the receiver  
Operation and battery status indication  
The red LED (LOW BAT/ON) » provides information on the current operating  
state of the receiver:  
Red LED lit up:  
The receiver is switched on and the capacity of the  
batteries/BA 2015 accupack is sufficient.  
Red LED flashing: The batteries are/the BA 2015 accupack is going flat  
(LOW BAT)!  
»
In addition, the 4-step battery status display on the display panel provides  
information on the remaining battery/BA 2015 accupack capacity:  
3 segments:  
capacity approx. 100 %  
capacity approx. 70 %  
capacity approx. 30 %  
LOW BAT  
2 segments:  
1 segment:  
Battery icon flashing:  
Modulation display of the received transmitter  
The level display for audio signal “AF” shows the modulation of the received  
transmitter.  
When the transmitter’s audio input level is excessively high (AF peak), the  
receiver’s level display for audio signal “AF” shows full deflection.  
9
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“MUTE” display  
The “MUTE” display appears on the display panel when the RF signal of the  
received transmitter is too weak.  
“PILOT” display  
The “PILOT” display appears on the display panel when the pilot tone  
evaluation is activated (see “Activating/deactivating the pilot tone  
evaluation (receiver only)” on page 32).  
RF signal indication  
The green LED (RF) at the front of the receiver lights up when an RF signal  
is being received.  
However, the green LED (RF) does not light up when the audio output is  
muted because  
y the RF signal of the received transmitter is too weak,  
y the transmitter is set to mono operation and the receiver’s pilot tone  
¿
evaluation is deactivated.  
Display backlighting  
After pressing a button, the display remains backlit for approx. 15 seconds.  
10  
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Preparing the devices for use  
SR 300 IEM G2 transmitter/  
SR 350 IEM G2 twin transmitter  
Fitting the device feet  
To ensure that the transmitter cannot slip on the surface on which it is placed,  
four self-adhesive soft rubber feet are supplied.  
Note:  
Do not fit the rubber feet when rack mounting the transmitter.  
CAUTION! Risk of staining of furniture surfaces!  
Some furniture surfaces have been treated with varnish, polish  
or synthetics which might cause stains when they come into  
contact with other synthetics. Despite a thorough testing of the  
synthetics used by us, we cannot rule out the possibility of  
staining.  
̈ Do not place the transmitter on delicate surfaces.  
̈ Ensure that the base of the transmitter is clean and free from grease  
before mounting the rubber feet.  
̈ Fix the rubber feet to the base of the transmitter by peeling off the safety  
paper and fitting them as shown in the digram on the left.  
Rack mounting  
CAUTION! Risks when rack mounting the transmitter!  
When installing the device in a closed or multi-rack assembly,  
please consider that, during operation, the ambient  
temperature within the rack may significantly rise above room  
temperature.  
̈ The ambient temperature within the rack must not exceed  
the temperature limit specified in the specifications.  
̈ When installing the device in a rack, take good care not to  
affect the ventilation required for safe operation or provide  
additional ventilation.  
̈ Make sure the mechanical loading of the rack is even to  
avoid a hazardous condition such as a severely unbalanced  
rack.  
̈ When connecting the device to the power supply, observe  
the information indicated on the type plate. Avoid circuit  
overloading. If necessary, provide overcurrent protection.  
̈ Ensure a reliable mains ground connection of the device by  
taking appropriate measures.  
̈ When installing the device in a closed or multi-rack  
assembly, please note that intrinsically harmless leakage  
currents of the individual devices may accumulate, thereby  
exceeding the allowable limit value. As a remedy, ground the  
rack via an additional ground connection.  
11  
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Rack mounting the SR 350 IEM G2 The rack mount “ears” are already fitted to the twin transmitter on delivery.  
twin transmitter To mount the twin transmitter into a 19’’ rack:  
̈ Slide the twin receiver into the 19’’ rack.  
̈ Secure the rack mount “ears” to the rack using four screws (not included).  
Rack mounting the SR 300 IEM G2 For mounting one or two transmitters into a 19” rack, you require the GA 2  
transmitter rack adapter. The GA 2 rack adapter consists of:  
y 2 rack mount “ears” ꢀ  
ƽ
ƾ
y 1 blanking plate ƽ  
y 1 jointing plate ƾ  
y 2 blanking plugs for closing off unused BNC holes  
y 12 recessed head screws M 3x6  
y 2 recessed head screws M 6x10  
To mount two transmitters side by side into a rack:  
ƾ
̈ Place the two transmitters side by side upside-down onto a flat surface.  
̈ Align the jointing plate ƾ over the holes in the bottom sides of the  
transmitters.  
̈ Secure the jointing plate ƾ to the transmitters using eight of the supplied  
recessed head screws (M 3x6).  
̈ Hook the two rack mount “ears” ƽ to the front panels of the transmitters.  
̈ Secure the rack mount “ears” to the transmitters using two of the  
supplied recessed head screws (M 3x6) respectively.  
̈ Slide the transmitters into the 19” rack.  
̈ Secure the rack mount “ears” to the rack.  
12  
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When mounting only one transmitter into a rack, use the blanking plate ƽ  
instead of the second transmitter.  
To mount only one transmitter into a rack:  
ƽ
̈ Hook the two rack mount “ears” to the front panel of the transmitter.  
̈ Secure the rack mount “ears” to the transmitter using two of the supplied  
recessed head screws (M 3x6) respectively.  
̈ Secure the blanking plate ƽ to one of the rack mount “ears” using two  
of the supplied recessed head screws (M 6x10).  
̈ If you are not front mounting the BNC output connector, insert the two  
blanking plugs into the holes of the blanking plate.  
̈ Slide the transmitter into the 19” rack.  
̈ Secure the rack mount “ears” to the rack.  
Connecting the antenna  
Connecting the antenna to the rear The supplied telescopic antenna can be mounted quickly and easily and are  
of the transmitter suitable for all applications where – good transmission conditions provided –  
a wireless transmission system is to be used without a large amount of  
installation work.  
̈ Connect the telescopic antenna to the BNC socket ƺ at the rear of the  
transmitter.  
̈ Pull the end cap to extend the telescopic antenna  
.
Use a remote antenna (available as an accessory) when the transmitter  
position is not the best antenna position for optimum transmission.  
ƺ
Antenna front mounting When mounting only one SR 300 IEM G2 transmitter or one SR 350 IEM G2  
twin transmitter into a rack, you can use an antenna mount (optional  
accessory) to mount the transmitter’s antenna connection to the front of the  
rack.  
Use the antenna mount matching the respective transmitter:  
y For the SR 300 IEM G2 transmitter: AM 2 antenna mount  
y For the SR 350 IEM G2 twin transmitter: GA 3030 AM antenna mount  
13  
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The antenna mounts consist of:  
y 2 BNC extension cables (screw-in BNC socket to BNC connector  
)
y 2 washers  
y 2 nuts  
y 2 antenna holders (GA 3030 AM only)  
y 4 screws (GA 3030 AM only)  
To front mount the antenna of the SR 300 IEM G2 transmitter:  
ƽ
̈ Screw the BNC socket of the BNC extension cables to the blanking plate  
ƽ using the supplied washer and nut.  
̈ Connect the BNC connector to the BNC socket ƺ on the transmitter.  
̈ Slide the transmitter into the 19’’ rack.  
̈ Secure the rack mount “ears” to the rack.  
̈ Connect the telescopic antenna  
to the BNC socket  
.
̈ Pull the end cap to extend the telescopic antenna  
.
To front mount the antennas of the SR 350 IEM G2 twin transmitter:  
̈ Unsecure the rack mount “ears” ³ from the rack.  
³
̈ Guide the BNC cables through the holes in the rack mount “ears” as shown  
in the diagram on the left.  
̈ Screw the antenna holders to the BNC sockets  
using the supplied  
washers and nuts.  
̈ Secure the antenna holders to the handles of the twin transmitter using  
two of the supplied screws respectively.  
14  
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̈ Connect the two BNC connectors  
to the BNC sockets ƺ on the twin  
transmitter.  
̈ Slide the twin transmitter into the 19’’ rack.  
̈ Resecure the rack mount “ears” ³ to the rack ³.  
̈ Connect the telescopic antennas  
to the BNC sockets  
.
̈ Pull the end caps to extend the telescopic antennas  
.
Changing the transmission power (SR 350 IEM G2 only)  
With the SR 350 IEM G2 twin transmitter, you can choose between two  
different transmission powers.  
ATTENTION! Danger of interference with other transmitters!  
Depending on the selected transmission power and frequency,  
you may have to apply for an approval from the respective  
authority for a radio transmission licence, as you could interfere  
with other transmitters. This approval will only be valid for the  
approved transmission power. For detailed information, please  
refer to the enclosed frequency data sheets and to the country-  
specific frequency and transmission power overviews.  
̈ Apply for an approval, should country-specific regulations  
on frequency and/or transmission power usage require this.  
ATTENTION! Danger of damage to the device!  
Due to the high transmission power (100 mW) in the switch  
position “STANDARD”, the optional AC 2 transmitter combiner  
̈ Use only the optional AC 3200 transmitter combiner (see  
“Accessories and spare parts” on page 40).  
̈ Set the transmission power switch (RF POWER) ƻ to the desired position.  
Transmission power will change as follows:  
Switch position  
LOW  
Transmission power  
15 mW  
STANDARD  
100 mW  
ƻ
15  
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Connecting the transmitter to the mains  
CAUTION! Damage due to electric current!  
If you connect the transmitter to an unsuitable power supply,  
this can cause damage to the device.  
̈ Use the supplied mains cable to connect the receiver to the  
mains (100 to 240 V AC, 50 or 60 Hz).  
̈ Ensure a reliable mains ground connection of the receiver –  
especially when you are using multi-outlet power strips or  
extension cables.  
Both transmitters have no mains switch.  
To connect the transmitter to the mains:  
̈ Pass the cable through the cable grip ¾.  
̈ Connect the supplied mains cable to the 3-pin IEC mains socket º.  
̈ Plug the mains connector into the wall socket.  
º
¾
º
To disconnect the transmitter from the mains:  
¾
̈ Pull out the mains connector from the wall socket.  
Connecting the amplifier/mixing console  
̈ Connect the amplifier/mixing console to the XLR-3F sockets Ƹ (left and  
Both balanced and unbalanced connection is possible (see “Connector  
assignment” on page 39).  
Note:  
Ƹ
ƹ
Any device that is only suitable for mono operation must be connected to  
XLR-3F socket Ƹ. In this case, set the transmitter to mono operation via  
̈ Via the “Sensitiv” menu, adjust the transmitter’s input sensitivity (see  
“Adjusting the sensitivity (transmitter only)” on page 30).  
Connecting the headphones/ monitoring the audio signal  
CAUTION! Danger of hearing damage!  
Listening at high volume levels for long periods can lead to  
permanent hearing defects.  
̈ Set the volume for the connected headphones to the  
minimum before putting the headphones on.  
To monitor the audio signal:  
̈ Set the headphone volume control » to the lowest volume by turning it  
to the left as far as possible.  
̈ Connect headphones with a ¼” (6.3 mm) stereo jack plug to the  
headphone output (PHONES) ·.  
̈ Gradually turn up the volume.  
·
»
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Service interface/ connection to the NET 1 network system  
The service interface (DATA A/B) ¹ is only required for servicing purposes.  
In addition, the interface can also be used for connecting the  
transmitter to the NET 1 network system. For detailed information,  
please refer to the user manual of the NET 1.  
¹
EK 300 IEM G2 receiver  
Inserting and replacing the batteries  
For powering the EK 300 IEM G2 receiver, two 1.5 V AA size batteries are  
required.  
¾
µ
̈ Press the two release buttons µ and open the battery compartment  
cover ¾.  
̈ Insert the two batteries as shown in the diagram on the left. Please  
observe correct polarity when inserting the batteries.  
̈ Close the battery compartment. The battery compartment cover ¾ locks  
into place with an audible click.  
Inserting and charging the accupack  
The receiver can also be powered via the rechargeable Sennheiser BA 2015  
accupack. Insert the accupack into the battery compartment as described  
above.  
¾
The receiver has two charging contacts ´ and a sensing contact on its short  
sides. The accupack can be recharged while remaining in the receiver. Insert  
the receiver into the L 2015 charger (see user manual of the L 2015 charger).  
´
Note:  
For accupack operation of the receiver, only use the BA 2015 accupack In  
order to ensure optimum operational reliability. For charging the  
accupack, only use the L 2015 charger. Both the accupack and the charger  
are available as accessories.  
The accupack is fitted with an integrated sensor which is – via a third  
contact – monitored by the electronics of the receiver and the charger.  
The sensor is necessary for the following control purposes:  
y The taking into account of the different voltage characteristics of  
primary cells (batteries) and accupacks. The battery status indications  
on the displays, the transmission of transmitter battery status  
information to the rack-mount receivers and the switch-off thresholds  
at the end of the operating time are corrected correspondingly. Due to  
the missing sensor, individual rechargeable battery cells will not be  
identified as accupacks.  
y The monitoring of the accupack temperature during charging in the L  
2015 charger.  
y The prevention of improper charging of inserted primary cells  
(batteries). Due to the missing sensor, individual rechargeable battery  
cells will also not be charged in the L 2015 charger.  
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Connecting the headphones  
CAUTION! Danger of hearing damage!  
Listening at high volume levels for long periods can lead to  
permanent hearing defects.  
̈ Set the volume for the connected headphones to the  
minimum before putting the headphones on.  
̈ For monitoring purposes, connect the supplied earphones or any  
Sennheiser stereo headphones with 3.5 mm stereo jack plug to the  
headphone output (PHONES) ³.  
̈ First, set the volume control · to the lowest volume by turning it to the  
left as far as possible. Then gradually turn up the volume.  
³
·
Using the components  
Switching the components on/off  
Switching the transmitter on/off  
̈ Press the ON button to switch the transmitter on.  
̈ To switch the transmitter off, press the ON button until “OFF” appears on  
the display.  
Note:  
The transmitter can only be switched off when the standard display is  
shown on the display panel. Within the operating menu, the ON button  
serves as the ESC (cancel) key, i.e. you cancel your entry and return to the  
standard display.  
After switch-off, the transmitter is in standby mode. To disconnect the  
transmitter from the mains, pull out the mains connector from the wall  
socket!  
Switching the receiver on/off  
̈ To switch the receiver on, turn the volume control Ƹ clockwise until it  
Ƹ
clicks. The red LED » lights up.  
̈ To switch the receiver off, turn the volume control Ƹ counterclockwise  
until it clicks. The red LED » goes off.  
Note:  
»
y The receiver has a short switch-on delay.  
y Remove the batteries or the accupack when the receiver will not be used  
for extended periods of time.  
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Adjusting the volume  
CAUTION! Danger of hearing damage!  
Listening at high volume levels for long periods can lead to  
permanent hearing defects.  
̈ Set the volume for the connected headphones to the  
minimum before putting the headphones on.  
You can adjust the volume at the headphone output on both the transmitter  
and the receiver.  
·
»
Ƹ
̈ Use the volume control » or Ƹ to adjust the volume of the connected  
headphones.  
Adjusting the balance  
During stereo operation – and provided that the standard display is shown  
on the display panel – the ̄/̆ rocker button serves to adjust the balance  
between the left and right stereo signal.  
relative levels of the two separate channels in the mixed mono signal (see  
“Stereo/FOCUS selection (receiver only)” on page 30).  
Activating/deactivating the lock mode  
Transmitter and receiver have a lock mode that can be activated or  
deactivated via the operating menu (see “Activating/deactivating the lock  
mode” on page 33). The lock mode prevents that  
y the transmitter is accidentally programmed or switched off during  
operation,  
SR 300 IEM G2/SR 350 IEM G2  
y the balance setting is accidentally changed via the receiver’s ̄/̆ rocker  
button.  
EK 300 IEM G2  
Attaching the receiver to clothing  
The receiver is attached to clothing (e.g. belt, waistband) with the supplied  
belt clip.  
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The operating menu  
To ensure intuitive operation of both transmitter and receiver, the operating  
menus have been largely standardized. As a result, adjustments to the  
settings can be made quickly and “without looking” – even in stressful  
situations, for example on stage or during a live show or presentation.  
The buttons  
Buttons  
ON  
Mode  
To ...  
Standard display switch the transmitter on and off  
(transmitter  
only)  
Operating menu  
Setting mode  
cancel the entry and return to the  
standard display  
cancel the entry and return to the  
standard display  
SET  
Standard display get into the operating menu  
Operating menu  
get into the setting mode of the  
selected menu  
Setting mode  
store the settings and return to the  
previous menu level  
̆/̄  
Standard display without function (transmitter)  
adjust the balance (receiver)  
Operating menu  
change to the previous menu (̆)  
or change to the next menu (̄)  
Setting mode  
adjust the setting of the selected  
menu:  
option (̆/̄)  
ESC  
Standard display without function  
(receiver only)  
Operating menu  
cancel the entry and return to the  
standard display  
Setting mode  
cancel the entry and return to the  
standard display  
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Overview of menus  
Transmitter  
Receiver  
Display  
Bank  
Function of the menu  
Display  
BANK  
Function of the menu  
Switching between channel banks  
Switching between channel banks  
Channel  
Switching between the channels in  
a channel bank  
CHAN  
Switching between the channels in  
a channel bank  
Tune  
Setting a transmission frequency for the TUNE  
channel bank “U” (user bank)  
Setting a receiving frequency for the  
channel bank “U” (user bank)  
SCAN  
Scanning a channel bank for free  
channels  
SQELCH  
ST-FOC  
LTD  
Adjusting the squelch threshold  
Stereo/FOCUS selection  
Limiting the volume at the  
headphone output  
Hi-BST  
Activating/deactivating  
the frequency boost  
Sensitiv  
Display  
Name  
Adjusting the sensitivity  
Selecting the standard display  
Entering a name  
DISPLY  
NAME  
RESET  
Selecting the standard display  
Entering a name  
Reset  
Loading the factory-preset  
default settings  
Loading the factory-preset  
default settings  
PILOT  
Activating/deactivating  
the pilot tone evaluation  
LCD Contr  
Adjusting the contrast of the  
graphic display  
Mode  
Lock  
Exit  
Stereo/mono selection  
Activating/deactivating the lock mode  
LOCK  
EXIT  
Activating/deactivating the lock mode  
Exiting the operating menu and  
returning to the standard display  
Exiting the operating menu and  
returning to the standard display  
Working with the operating menu  
By way of example of the “Tune” menu, this section describes how to use the  
operating menu.  
After switching the unit on, the standard display is shown on the display  
panel.  
SR 300 IEM G2/SR 350 IEM G2  
EK 300 IEM G2  
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Getting into the operating menu  
̈ Press the SET button to get from the standard display into the operating  
menu.  
The last menu selected flashes on the display. With the transmitter, the  
current setting is additionally displayed.  
Selecting a menu  
̈ Press the ̄/̆ rocker button to select a menu.  
̈ Press the SET button to get into the setting mode of the selected menu.  
With the receiver, the current setting that can be adjusted flashes on the  
display. With the transmitter, the name of the menu and the current  
setting are displayed.  
Adjusting a setting  
̈ Press the ̄/̆ rocker button to adjust the setting.  
By briefly pressing the ̄/̆ rocker button, the display jumps either  
forwards or backwards to the next setting. In the “Channel”, “Tune” and  
Name” menu, the ̄/̆ rocker button features a “fast search” function.  
If you hold down a button, the display cycles continuously. The “fast  
search” function allows you to get fast and easily to your desired setting.  
With the receiver, the new setting flashes on the display until it is stored.  
Storing a setting  
̈ Press the SET button to store the setting. “Stored” appears on the display,  
indicating that the setting has been stored. The display then returns to  
the top menu level.  
With most menus, new settings become effective immediately without  
having to be stored. An exception are the “Bank”, “Channel”, “Tune” and  
Reset” menus of the transmitter and the “RESET” menu of the receiver.  
With these menus, new settings only become effective after they have  
been stored (“Stored” appears on the display, indicating that the setting  
has been stored).  
Exiting the operating menu  
̈ Select the “Exit” menu to exit the operating menu and to return to the  
standard display.  
When you have entered the operating menu, the transmitter’s ON button  
serves as the ESC (cancel) key, i.e. by briefly pressing this button, you  
cancel your entry and return to the standard display. The receiver has a  
separate ESC button with which you can cancel your entry.  
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Operating menu of the stereo transmitter  
SET  
Exit  
SET  
Bank  
1.01  
Bank  
3.01  
Menu  
Exit  
786.300 MHz  
790.250 MHz  
B.CH  
B.CH  
Bank  
1
Current channel bank  
Channel 01  
̆ /  
̄:  
1...8, U (User Bank)  
Changing the channel bank  
SET: Stores the setting  
Stored  
SET  
Channel  
Channel  
Menu  
3.01  
3.08  
Bank  
3
790.250 MHz  
807.900 MHz  
B.CH  
Current channel and  
corresponding frequency  
B.CH  
Channel 01  
Tune  
Changing the channel  
786.400MHz  
̆ /  
̄
:
Channel 01...12  
SET: Stores the setting  
Stored  
SET  
Tune  
Tune  
Menu  
U.01  
U.01  
Channel 08  
786.300 MHz  
797.075 MHz  
B.CH  
B.CH  
Tune  
Sensitiv –24 dB  
Setting the frequency for  
channel bank "U"  
807.900MHz  
̆ /  
̄
:
Transmission frequency  
Current frequency on the  
selected channel  
in steps of 25 kHz  
SET: Stores the setting  
Stored  
SET  
Sensitiv  
Sensitiv  
Menu  
– 24 dB  
–8 dB  
Tune  
797.075MHz  
Sensitiv –24 dB  
Display Frequency  
Setting the sensitivity  
̆ /  
̄:  
0...24 dB,  
Current sensitivity setting  
Sensitivity in steps of 8 dB  
SET: Stores the setting  
Stored  
SET  
Display  
Display  
Menu  
Frequency  
Name  
Sensitiv –8 dB  
Display Frequency  
Name  
Switching between the  
standard displays  
VOCAL  
̆ /  
̄:  
Frequency,  
Current standard display  
Bank/Channel, Name  
SET: Stores the setting  
Stored  
Frequency  
Name  
Bank/Channel  
SET  
Name  
OCAL  
Name  
Menu  
CAL  
G
Display Name  
Name  
Reset  
Assigning the transmitter a  
name  
VOCAL  
Current transmitter name  
̆ /  
̄
:
Name (10 characters)  
Letters w/o pronounciation  
marks, numbers from 0...9,  
special characters, spaces  
SET: 9 x next character, then  
store  
Stored  
Reset  
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Name GUITAR  
SET  
Reset  
Reset? No  
Reset  
Reset? Yes  
Menu  
Name  
GUITAR  
Reset  
LCD Contr IIIIII.....  
Loading the factory-preset  
default settings  
Security check  
̆ /  
̄
:
No, Yes  
"reset"= Yes:  
SET: Transmitter loads factory-  
preset default settings,  
transmitter is restarted,  
standard display appears  
"reset"= No:  
SET: Reset is cancelled  
SET  
LCD Contrast  
LCD Contrast  
Menu  
IIIIII..........  
Reset  
IIIIIIIIII......  
LCD Contr IIIIII.....  
Mode  
Stereo  
̆ /  
̄:  
16 steps  
Current contrast setting  
Adjusting the contrast of the  
graphic display  
SET: Stores the setting  
STORED  
SET  
Mode  
Mode  
Menu  
Stereo  
Mono  
LCD Contr IIIIIIIIII......  
Mode  
Lock  
Stereo  
Off  
̆ /  
̄:  
Stereo, Mono  
Current setting  
Switching between stereo  
and mono operation  
SET: Stores the setting  
STORED  
SET  
Lock  
Lock  
Menu  
Off  
On  
Mode  
Lock  
Exit  
Mono  
Off  
̆ /  
̄
:
On, Off  
Lock mode activated or  
deactivated  
Activating the lock mode  
Lock mode = On:  
SET: Stores the setting,  
returns to standard display  
Lock mode = Off:  
SET: Stores the setting  
STORED  
SET  
Menu  
Lock  
Exit  
On  
3
Bank  
Exiting the operating menu  
Bank  
3
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Operating menu of the stereo receiver  
EXIT  
SET  
SET  
BANK 1  
Current channel bank  
BANK U  
BANK  
Changing the channel  
bank  
̆ /  
̄:  
1...8, U (User  
Bank)  
SET: Stores the setting  
STORED  
SET  
B.CH  
B.CH  
Channel 01...12  
CHAN  
1.01  
1.12  
Changing the channel  
̆ /  
̄:  
Current channel or  
frequency  
SET: Stores the setting  
STORED  
SET  
790.025 MHz  
791.125MHz  
TUNE  
̆ /  
̄:  
Receiving  
Current frequency on  
the selected channel  
Setting the frequency  
for channel bank "U"  
frequency in steps of  
25 kHz  
SET: Stores the setting  
STORED  
SET  
START  
CLEAR  
SCAN  
Scanning the selected  
channel bank for free  
channels  
̆ /  
̄:  
CLEAR, START  
Start scan = START  
SET: Scans the selected  
channel bank for free  
channels  
09 CH FREE  
SET  
Delete result = CLEAR  
SET: Releases locked  
channels  
STORED  
SET  
SQ LO  
Current squelch  
threshold  
SQ HI  
SQELCH  
Setting the squelch  
threshold  
̆ /  
̄
:
LO, MID, HI  
SET: Stores the setting  
STORED  
ST--FOC  
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SQELCH  
SET  
SET  
SET  
SET  
STEREO  
FOCUS  
ST--FOC  
Switching between  
stereo and FOCUS  
operation  
Current setting  
̆ /  
̄
:
Stereo, Focus  
SET: Stores the setting  
STORED  
LTD.OFF  
LTD. ON  
LTD  
Limiter activated or  
deactivated  
Limiting the volume at  
the headphone output  
̆ / ̄: OFF, ON  
SET: Stores the setting  
STORED  
HB.OFF  
HI--BST  
HB. ON  
Frequency boost  
Boosting the AF  
̆ /  
̄
:
OFF, ON  
activated or deactivated  
frequency response  
SET: Stores the setting  
STORED  
CHAN  
NAME  
DISPLY  
Current standard display  
Switching between the  
standard displays  
̆ / ̄: FREQ, NAME,  
CHAN  
SET: Stores the setting  
STORED  
SET  
NAME  
VOCAL  
GUCAL  
Assigning the receiver  
a name  
Current receiver name  
̆ /  
̄:  
Enter a name (6  
characters) Letters w/o  
pronounciation marks,  
numbers from 0...9, special  
characters, spaces  
SET: 5 x next character,  
then store  
STORED  
RESET  
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NAME  
SET  
RST. NO  
RST. OK  
RESET  
Security check  
̆ /  
̄:  
OK, NO  
Loading the factory-  
preset default settings  
"reset" = OK:  
SET: Receiver loads factory-  
preset default settings (only  
pilot tone setting is kept),  
receiver is restarted,  
standard display appears  
"reset" = NO  
SET: Reset is cancelled  
SET  
PLT. ON  
PLT. OFF  
PILOT  
Activating/deactivating  
the pilot tone  
̆ /  
̄:  
ON, OFF  
Pilot tone transmission  
activated or deactivated  
SET: Stores the setting  
transmission  
STORED  
LOC.OFF  
SET  
LOC. ON  
LOCK  
Lock mode activated or  
deactivated  
Activating the lock mode  
̆ /  
̄:  
ON, OFF  
Lock mode = ON:  
SET: Stores the setting,  
("STORED") returns to  
standard display  
Lock mode = OFF:  
SET: Stores the setting  
STORED  
SET  
EXIT  
Exiting the operation  
BANK  
BAL.L 1  
BAL.R 15  
Current balance setting  
̆ /  
̄
:
BAL.L 1...15,  
BAL.--0--, BAL.R 1...15  
Adjusting the balance  
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Adjustment tips for the operating menu  
Switching between channel banks  
BANK  
Bank  
Via the “Bank” menu, you can switch between the nine channel banks of the  
up to 12 switchable channels that are factory-preset to a transmission/  
receiving frequency (see “The channel bank system” on page 5). The channel  
bank “U” (user bank) also has up to 12 switchable channels to store your  
selection out of 1,440 transmission/receiving frequencies that are freely  
selectable within the preset frequency range.  
When switching from one channel bank to another, the channel with the  
lowest channel number is automatically displayed. If, during the last scan of  
this channel bank, an interfering frequency was detected on the channel with  
the lowest channel number, the receiver display panel automatically displays  
the next free channel (see below).  
Switching between the channels in a channel bank  
CHAN  
Channel  
Via the “Channel” menu, you can switch between the channels in a channel  
bank.  
channel. After scanning a channel bank (see “Scanning the channel banks for  
free channels (receiver only)” on page 28), only the free channels are  
displayed. Set the transmitter to one of the free channels.  
Selecting the frequencies to be stored  
in the channel bank “U”  
TUNE  
Tune  
Via the “Tune” menu, you can select the frequencies to be stored in the  
channel bank “U” (user bank).  
When you have selected one of the channel banks “1” to “8” and then select  
the “Tune” menu, the transmitter or receiver automatically switches to  
channel 01 of the channel bank “U”. In this case, “U.01” briefly appears on  
the display.  
̈ Use the ̄/̆ rocker button to select the desired transmission or receiving  
frequency. Transmission and receiving frequencies are tunable in 25-kHz  
steps within a switching bandwidth of 36 MHz max. For intermodulation-  
free frequencies, please refer to the enclosed frequency table.  
Scanning the channel banks for free channels  
(receiver only)  
SCAN  
Before putting one or several transmission links into operation, you should  
scan the selected channel bank for free channels.  
Starting the scan and storing the scan result  
̈ Before starting the scan, switch all transmitters of your system off, since  
channels used by switched-on transmitters will not be displayed as “free  
channels”.  
̈ Select the “SCAN” menu.  
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̈ Select “START” and confirm your selection by pressing the SET button.  
After the scan is completed, the number of free channels is displayed.  
Pressing the SET button once more will store the scan result and lock all  
channels that are used or subject to interference.  
Releasing locked channels  
̈ Select the “SCAN” menu.  
̈ Select “CLEAR” and confirm your selection by pressing the SET button. All  
channels in this channel bank can now be selected again.  
Multi-channel operation  
For multi-channel operation, only use the free channels in a channel bank.  
Before putting the transmission links into operation, we recommend  
performing an auto scan.  
̈ Select a channel bank on a receiver.  
̈ Scan this channel bank for free channels. If not enough free channels are  
available in the selected channel bank, repeat the scan with another  
channel bank.  
̈ Apply the scan result to all other transmitters and receivers.  
Note:  
If you have the SR 350 IEM G2 twin transmitter connected to the NET 1  
network system, follow the instructions of the user manual of the NET 1.  
Adjusting the squelch threshold (receiver only)  
SQELCH  
The receiver is equipped with a squelch that can be adjusted via the “SQELCH”  
menu. The squelch eliminates annoying noise when the transmitter is  
switched off. It also suppresses sudden noise when there is no longer  
sufficient transmitter power received by the receiver.  
Note:  
Before adjusting the squelch threshold to a different setting, use the  
volume control Ƹ to set the volume for the connected headphones to the  
minimum.  
Ƹ
There are three possible squelch settings:  
y LO  
y MID = middle  
y HI = high  
= low  
Selecting the setting “LO” reduces the squelch threshold, selecting the  
setting “HI” increases the squelch threshold. Adjust the squelch threshold –  
with the transmitter switched off – to the lowest possible setting that  
suppresses hissing noise.  
Notes:  
y If the squelch threshold is adjusted too high, the transmission range will  
be reduced. Therefore, always adjust the squelch threshold to the  
lowest possible setting.  
y When in the setting mode of the “SQELCH” menu, pressing the  
̄ button for more than three seconds will switch the squelch off.  
“SQ.OFF” appears on the display. If no RF signal is being received,  
hissing noise will occur. This setting is for test purposes only.  
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Stereo/FOCUS selection (receiver only)  
ST-FOC  
Via the “ST-FOC” menu, you can switch between stereo and FOCUS operation.  
In both operating modes, the transmitter has to be set to stereo operation.  
When the receiver is set to stereo operation, the left-right signals are  
available as usual.  
When the receiver is set to FOCUS operation, the left-right signals are mixed  
̆ rocker button to adjust the relative levels of the two separate channels in  
the mixed mono signal (see “Adjusting the balance” on page 19).  
Limiting the volume at the headphone output  
(receiver only)  
LTD  
Via the “LTD” menu, you can switch the limiter on and off. With the limiter  
switched on, the volume at the headphone output will be reduced.  
Activating/deactivating the frequency boost  
(receiver only)  
HI-BST  
Via the “HI-BST” menu, you can boost the AF frequency response at 10 kHz.  
As a result, headphones with magnetic transducers sound better.  
Adjusting the sensitivity (transmitter only)  
Sensitiv  
To match the transmitter to the output level of the connected unit (e.g.  
mixing console), you can adjust the input sensitivity in four steps of 8 dB  
(from 0 to –24 dB) via the “Sensitiv” menu.  
The input sensitivity is adjusted too high when close talking distances,  
speakers with loud voices or loud music passages cause overmodulation in  
the transmission link. In this case, the transmitter’s “PEAK” warning will light  
up and the receiver’s level display for audio signal “AF” will show full  
deflection.  
If, on the other hand, the sensitivity is adjusted too low, the transmission link  
will be undermodulated, which would result in a signal with high background  
noise.  
The sensitivity is correctly adjusted when the level display for audio signal  
“AF” shows full deflection only during the loudest passages.  
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Selecting the standard display  
DISPLY  
Display  
Via the “Display” menu, you can select the standard display.  
SR 300 IEM G2 transmitter/SR 350 IEM G2 twin transmitter  
Selectable standard display  
“Frequency”  
Contents of standard display  
(display of the frequency)  
“Bank/Channel”  
(display of the channel bank  
and channel number)  
“Name”  
(display of the freely selectable  
name)  
EK 300 IEM receiver  
Selectable standard display  
Contents of standard display  
“FREQ”  
“NAME”  
“CHAN”  
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Entering names  
NAME  
Name  
Via the “Name” menu, you can enter a freely selectable name for the  
transmitter and the receiver. You can, for example, enter the name of the  
performer for whom the adjustments have been made.  
The name can be displayed on the standard display and can consist of up to  
ten characters (transmitter) and up to six characters (receiver) such as:  
y letters (without pronounciation marks),  
y numbers from 0 to 9,  
y special characters e.g. () - . _ and spaces.  
To enter a name, proceed as follows:  
̈ Press the SET button to get into the setting mode of the “Name” menu.  
The first segment starts flashing on the display.  
̈ With the ̄/̆ rocker button you can now select a character. By briefly  
pressing a button, the display jumps either forwards or backwards to the  
next character. If you hold down a button, the display starts cycling  
continuously.  
̈ Press the SET button to change to the next segment and select the next  
character.  
̈ Have you entered the name completely? Press the SET button to store  
your setting and to return to the previous menu level.  
Loading the factory-preset default settings  
RESET  
Reset  
Via the “Reset” menu, you can load the factory-preset default settings. With  
the receiver, however, the selected setting for the pilot tone remains  
unchanged. After the reset, the device is restarted and the standard display  
is shown on the display panel.  
Activating/deactivating the pilot tone evaluation  
(receiver only)  
PILOT  
Pilot  
Via the “Pilot” menu, you can activate or deactivate the pilot tone evaluation  
of the receiver.  
The pilot tone is used to  
y code the transmitter’s stereo signal,  
y support the squelch function (Squelch).  
During stereo operation, the transmitter adds the pilot tone to the  
transmitted stereo signal and the receiver detects and evaluates the pilot  
tone. When the transmitter is set to mono operation, deactivate the pilot  
tone evaluation on the receiver.  
You can combine units of first and second generation ew 300 IEM systems  
without any problems.  
Adjusting the contrast of the graphic display (transmitter  
only)  
LCD-Contr  
Via the “LCD Contr” menu, you can adjust the contrast of the graphic display  
in 16 steps.  
32  
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Stereo/mono selection (transmitter only)  
Mode  
Via the “Mode” menu, you can switch the transmitter between mono and  
stereo operation.  
Note:  
Connect any unit that only delivers a mono signal to the transmitter’s left  
XLR-3F socket Ƹ and set the transmitter to mono operation. The receiver  
automatically “identifies” the transmitted audio signal and does not need  
to be set to mono operation. However, you have to deactivate the pilot  
tone evaluation on the receiver.  
Ƹ
Activating/deactivating the lock mode  
LOCK  
Lock  
Via the “Lock” menu, you can activate or deactivate the lock mode.  
The lock mode icon on the display indicates that the lock mode is activated.  
To deactivate the lock mode, first press the SET button. Then press the ̄/̆  
rocker button to select “LOC.OFF”. If you confirm your selection by pressing  
the SET button, the buttons can be operated as usual.  
SR 300 IEM G2/SR 350 IEM G2  
EK 300 IEM G2  
Exiting the operating menu  
EXIT  
Exit  
Via the “Exit” menu, you can exit the operating menu and return to the  
standard display.  
33  
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If a problem occurs ...  
Error checklist  
Problem  
Possible cause  
Possible solution  
No operation indication  
Batteries are flat or  
accupack is flat (receiver only)  
Replace the batteries or  
recharge the accupack  
No mains connection (transmitter  
only)  
Check the connections of the mains  
unit  
No RF signal  
Transmitter and receiver are not on  
the same channel  
Set transmitter and receiver to the  
same channel  
Transmission range is exceeded  
threshold (receiver only)” on  
page 29)  
or reduce the distance between  
transmitting antenna and receiver  
RF signal available,  
no audio signal,  
“MUTE” display appears on  
the display panel  
Transmitter is set to mono operation Deactivate the pilot tone evaluation  
and the pilot tone evaluation of the  
receiver is activated  
on the receiver  
Receiver’s squelch threshold is  
adjusted too high  
See “Adjusting the squelch threshold  
(receiver only)” on page 29)  
Audio signal has a high level  
of background noise  
Transmitter sensitivity is adjusted  
too low  
See “Adjusting the sensitivity  
(transmitter only)” on page 30  
Audio signal is distorted  
Transmitter sensitivity is adjusted  
too high  
See “Adjusting the sensitivity  
(transmitter only)” on page 30  
No access to a certain channel During scanning, an RF signal has  
been detected on this channel and  
free channels (receiver only)” on  
page 28  
the channel has been locked  
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 agent for assistance.  
34  
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Recommendations and tips  
... for the EK 300 IEM G2 receiver  
y The antenna should hang freely and be at least 1 cm away from the body.  
The antenna must not be in direct contact with the skin.  
... for optimum reception  
y Transmission range depends to a large extent on location and can vary  
from about 10 m to about 150 m. There should be a “free line of sight”  
between transmitting and receiving antennas.  
y If, with the SR 300 IEM G2 transmitter or the SR 350 IEM G2 twin receiver,  
transmission conditions are unfavourable, you should use a remote  
antenna which is connected via antenna cable.  
y To avoid overmodulating the receiver, observe a minimum distance of 5 m  
between transmitting and receiving antennas.  
y Observe a minimum distance of 50 cm between the transmitting antennas  
and metal objects (such as cross members or reinforced-concrete walls).  
... for multi-channel operation  
y For multi-channel operation, you can only use the channels in a channel  
bank. Each of the channel banks “1” to “8” accommodates up to 12  
factory-preset frequencies which are intermodulation-free. For alternative  
frequency combinations, please refer to the enclosed frequency table. The  
freely selectable frequencies can be selected via the “Tune” menu and can  
be stored in the channel bank “U”.  
y When using several transmitters simultaneously, interference can be  
avoided by maintaining a minimum distance of 20 cm between two  
transmitters. For multi-channel applications, use the appropriate  
transmitter combiners (see “Accessories and spare parts” on page 40):  
y SR 300 IEM G2 stereo transmitter:  
AC 2 transmitter combiner  
y SR 350 IEM G2 twin transmitter:  
AC 2 transmitter combiner (only when the transmission power is set to  
“LOW”) or AC 3200 transmitter combiner  
Care and maintenance  
Use a slightly damp cloth to clean the units from time to time.  
Note:  
Do not use any cleansing agents or solvents.  
35  
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Additional information  
HDX noise reduction  
RF link  
Inherent noise  
of the RF link  
Receiver  
Transmitter  
Progress you can hear:  
The evolution wireless G2 series is equipped with HDX, the Sennheiser noise  
reduction system that reduces RF interference. It increases the signal-to-  
noise ratio in wireless audio transmission to more than 110 dB.  
HDX is a wideband compander system which compresses the audio signal in  
the transmitter in a 2:1 ratio (related to dB) to lift it above the inherent noise  
floor of the RF link. In the receiver the signal is expanded in an identical and  
opposite way in a 1:2 ratio to restore the original signal, at the same time  
reducing the RF noise to below the noise floor of the receiver.  
HDX has been specially developed for high quality radiomicrophone systems.  
Note:  
Only transmitters and receivers that are equipped with HDX can work  
correctly with each other. If non HDX equipment was mixed with HDX, the  
dynamic range would be drastically reduced and the transmission would  
sound blunt and flat. HDX is permanently active and cannot be switched  
off.  
Wireless transmission systems  
With the ew 300 IEM G2 system, Sennheiser puts an end to cable tangles and  
enables complete freedom of movement. The systems operate exclusively in  
the UHF band. UHF transmission is extremely reliable and is far less prone to  
interference than the overcrowded VHF band – harmonics from mains units,  
fluorescent tubes, refrigerators, computers, etc. are virtually eliminated. Also  
indoor propagation of UHF radio waves is better than VHF so that the RF  
power can be kept low – this is also an advantage when using multi-channel  
systems. Finally, UHF frequency ranges are being approved all over the world  
for radiomicrophone usage – in some countries licence-free.  
Correct adjustment of transmitter sensitivity is vital. Too high and you get  
overmodulation and distortion, too low and you get undermodulation and a  
noisy signal. Please set the sensitivity correctly for the microphone/usage  
and check it before every performance to ensure best operation.  
36  
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Squelch  
Pilot tone squelch  
The transmitter adds a 19-kHz pilot tone to the audio signal. The receiver  
checks incoming audio signals to see if the pilot tone is present. In the  
absence of the 19-kHz signal, the receiver’s audio output will remain muted,  
even if a strong RF signal is present.  
This prevents strong interfering signals from causing hissing noise in the  
receiver when the transmitter is switched off.  
Field strength-dependent squelch  
Depending on the strength of the received RF signal, the receiver’s audio  
output is opened or muted. Via the “SQELCH” menu of the receiver, the  
squelch threshold can be adjusted in three steps (LO, MID, HI).  
37  
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Specifications  
System  
RF characteristics  
Modulation  
wideband FM stereo, MPX pilot tone  
Frequency ranges  
518–554, 572–608, 626–662, 740–776, 786–822,  
830–866 MHz  
Transmission/receiving frequencies  
8 channel banks with up to 12 factory-preset channels each  
1 channel bank with up to 12 freely selectable channels  
(1,440 frequencies, tunable in steps of 25 kHz)  
36 MHz  
Switching bandwidth  
Nominal/peak deviation  
Frequency stability  
24 kHz/ 48 kHz  
15 ppm  
AF characteristics  
Noise reduction system  
AF frequency response  
MPX pilot tone (frequency/deviation)  
S/N ratio (at 1 mV and peak deviation)  
THD (at nominal deviation and 1 kHz)  
Sennheiser HDX  
40–15,000 Hz  
19 KHz/±4 kHz  
91 dB(A)  
0,9 %  
General data  
Temperature range  
–10 °C to +55 °C (with SR 350 IEM G2: –10 °C to +45 °C)  
Dimensions of carrying case [mm]  
Weight of carrying case  
380 x 370 x 70  
approx. 3 kg  
IE 4 earphones  
Frequency response  
Max. SPL  
Impedance  
40–20,000 Hz  
106 dB (1 kHz, 1 mW)  
16 Ω  
EK 300 IEM G2 receiver  
RF characteristics  
Receiver principle  
non diversity  
Sensitivity (with HDX, peak deviation)  
< 2.5 μV at 52 dBA  
rms S/N  
Adjacent channel rejection  
Intermodulation attenuation  
Blocking  
70 dB  
70 dB  
80 dB  
Squelch  
4 steps:  
OFF  
LO: 5 dBμV  
MID: 15 dBμV  
HI: 25 dBμV  
Pilot tone squelch (MPX pilot tone)  
can be switched off  
AF characteristics  
Headphone output  
3.5 mm jack socket  
AF output voltage (peak deviation, 1 kHz ) PHONES 2 x 100 mW at 32 Ω  
AF  
Overall device  
Power supply  
Nominal voltage  
2 AA size batteries, 1.5 V  
2.4 V  
Max. power consumption at nominal voltage  
Power consumption with switched-off receiver  
Operating time (with batteries)  
Operating time (with BA 2015 accupack)  
Dimensions [mm]  
approx. 190 mA (2 x 30 mW)  
250 μA  
6–10 hrs (depending on volume level)  
6–10 hrs (depending on volume level)  
82 x 64 x 24  
Weight (incl. batteries)  
approx. 170 g  
38  
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SR 300 IEM G2 transmitter/SR 350 IEM G2 twin transmitter  
RF characteristics  
SR 300 IEM G2  
SR 350 IEM G2  
RF output power at 50 Ω  
20 mW  
100 mW, switchable to 15 mW  
ERP  
depending on  
depending on  
antenna type used  
BNC socket, 50 Ω  
antenna type used  
BNC socket, 50 Ω  
Antenna output  
AF characteristics  
Headphone output  
¼’’ (6.3 mm) stereo jack socket  
Output power at headphone output  
AF input  
100 mW an 32 Ω (2x)  
2 x XLR-3 socket, electronically balanced  
Max. input voltage (peak deviation, 1 kHz)  
+20 dB  
u
Input impedance  
10 kΩ  
Overall device  
SR 300 IEM G2  
10,5–16 V DC  
12 V DC  
SR 350 IEM G2  
100–240 V AC/50–60 Hz  
Power supply  
Nominal voltage  
Power consumption at nominal voltage  
Dimensions [mm]  
Weight  
approx. 300 mA  
212 x 145 x 38  
approx. 1100 g  
approx. 400 mA  
436 x 215 x 43  
approx. 3960 g  
Type approvals  
Area  
Conformity  
SR 300 IEM G2  
FCC-Part 74.861  
FCC ID: DMOF2EUVL  
RSS-123  
SR 350 IEM G2  
FCC-Part 74.861  
FCC ID: DMOSR350  
RSS-123  
USA:  
Canada:  
EU:  
IC: 2099A - G2SREK  
IC: 2099A-SR350  
0682  
0682  
complies with the requirements for Radio and  
Telecommunications Terminal Equipment (R&TTE):  
y EN 300422-1/-2, class II  
complies with the requirements for Radio and  
Telecommunications Terminal Equipment (R&TTE):  
y EN 300422-1/-2, class II  
y EN 301489-1/-9  
y EN 300454-1/-2  
y EN 301489-1/-9  
complies with the requirements for safety (LVD):  
complies with the requirements for safety (LVD):  
y EN 60065  
y EN 60065  
Connector assignment  
SR 300/350 IEM G2:  
SR 300/350 IEM G2:  
SR 300:  
EK 300 IEM G2:  
¼’’ (6.3 mm) stereo jack plug  
for headphone output  
XLR-3M connector  
DC connector for power 3.5 mm stereo jack plug  
supply  
for headphone output  
2
1
+
3
39  
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Accessories and spare parts  
Cat. No. Accessory/spare part  
009823 GA 2:  
19’’ rack adapter  
009912 AM 2 (for SR 300 IEM G2):  
Antenna mount for mounting antennas to the front of the GA 2 rack adapter  
004645 A 1031-U:  
UHF antenna, passive, omni-directional, can be mounted onto a stand  
003658 A 2003 UHF:  
UHF antenna, passive, directional, can be mounted onto a stand  
004368 GA 3030-AM (for SR 350 IEM G2):  
Antenna mount  
002324 GZL 1019-A1:  
Antenna cable with BNC connectors, length: 1 m  
002325 GZL 1019-A5:  
Antenna cable with BNC connectors, length: 5 m  
009822 AC 2:  
Transmitter combiner, for combining the RF signals of up to four transmitters  
onto a single antenna and for powering up to four transmitters  
502048 AC 3200:  
Transmitter combiner, for combining the RF signals of up to eight trans-  
mitters onto a single antenna and for powering up to eight transmitters  
004863 NT 3:  
Plug-in mains unit for AC2  
500432 IE 4:  
1 pair of earphones with medium ear sleeves  
512814 IES 4–L:  
Ear sleeves, large (10 pieces)  
512815 IES 4–M:  
Ear sleeves, medium (10 pieces)  
512816 IES 4–S:  
Ear sleeves, small (10 pieces)  
009950 BA 2015:  
Accupack  
009828 L 2015:  
Charger for BA 2015 accupack  
009826 CC 2:  
Carrying case for ew 300 IEM G2 system  
40  
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Manufacturer Declarations  
Warranty  
The original Sennheiser product you have purchased is covered by a warranty  
of 24 months. The warranty period begins on the date of purchase of brand  
new, unused products by the first end user. Please retain your sales receipt  
(or your warranty certificate) as proof of purchase. Unless you submit proof  
of purchase, which will be verified by your local Sennheiser service partner,  
you will be obliged to pay for any repairs that are carried out. Proof of  
purchase must state the date of purchase and name of the product.  
We shall satisfy our warranty obligations by remedying any material or  
manufacturing faults free of charge at our discretion either by repair or by  
exchanging individual parts or the entire appliance. Any defective parts  
removed from a product during the course of a warranty claim shall become  
the property of Sennheiser electronic GmbH & Co. KG.  
The following cases are not covered by the above warranty:  
y minor faults or deviations in the quality of a product which do not affect  
the product's value or fitness for its intended purpose  
y any accessories supplied with the product  
y rechargeable and disposable batteries (these products have a shorter  
service life, the length of which also depends on the frequency of use)  
y faults resulting from improper use (e.g. operating errors, mechanical  
damage, incorrect operating voltage)  
Proper use for the purposes of this warranty is defined as use of the  
product under the conditions stated in the instructions for use.  
y faults due to wear and tear  
y any modification of Sennheiser products effected by you or a third party,  
unless Sennheiser has given its prior written consent to the nature and  
extent of the modification  
y faults due to force majeure  
y faults of which the purchaser was already aware at the time of purchase  
All warranty claims become void if the product is tampered with by  
unauthorised persons or repair shops.  
Warranty claims can be enforced in any country throughout the world in  
which the statutory rights of the country concerned are not in conflict with  
our warranty regulations. No other warranty claims or claims over and above  
the rights stated in these terms and conditions will be accepted.  
Consumers may be entitled to statutory rights in their own countries which  
are not restricted by these warranty terms and conditions, as the warranty is  
governed by the laws of the country in which the Sennheiser product was  
purchased by the consumer. The provisions of the UN Convention on the  
International Sale of Goods do not apply to this service.  
If you wish to file a claim under the warranty, please send the product to your  
local service partner, together with accessories and proof of purchase.  
An up-to-date list of all service partners of Sennheiser electronic GmbH & Co.  
The customer bears the risk of shipment. To avoid any damage in transit,  
please use the original packaging if possible.  
41  
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CE Declaration of Conformity  
0682  
This equipment is in compliance with the essential requirements and other  
relevant provisions of Directives 1999/5/EC, 2004/108/EU or 2006/95/EC.  
Before putting the equipment into operation, please observe the respective  
country-specific regulations!  
Batteries or rechargeable batteries  
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.  
WEEE Declaration  
Your Sennheiser product was developed and manufactured with highquality  
materials and components which can be recycled and/or reused. This symbol  
indicates that electrical and electronic equipment must be disposed of  
separately from normal waste at the end of its operational lifetime. Please  
dispose of this product by bringing it to your local collection point or recycling  
centre for such equipment. This will help to protect the environment in which  
we all live.  
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 reasonable 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:  
y Reorient or relocate the receiving antenna.  
y Increase the separation between the equipment and receiver.  
y Connect the equipment into an outlet on a circuit different from that to  
which the receiver is connected.  
y Consult the dealer or an experienced radio/TV technician for help.  
This class B digital apparatus 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.  
42  
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Sennheiser electronic GmbH & Co. KG  
Am Labor 1  
30900 Wedemark, Germany  
Phone +49 (5130) 600 0  
Fax +49 (5130) 600 300  
Printed in Germany  
Publ. 03/08  
524170/A01  
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