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Instructions for use
W 300
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Thank you for choosing Sennheiser!
We have designed this product to give you reliable operation over many
years. Over sixty 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.
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Contents
The evolution wireless series ew 300 G2 ........................................................... 4
The channel bank system ...................................................................................................... 4
Safety instructions ................................................................................................. 5
System variants ...................................................................................................... 5
Overview of operating controls ........................................................................... 6
EM 300 G2 rack-mount receiver .......................................................................................... 6
SK 300 G2 bodypack transmitter ........................................................................................ 7
SKM 300 G2 radiomicrophone .............................................................................................. 8
Indications and displays on the receiver ............................................................................ 9
Indications and displays on the transmitters ................................................................... 10
Preparing the components for use ..................................................................... 12
EM 300 G2 rack-mount receiver .......................................................................................... 12
SK 300 G2 bodypack transmitter ........................................................................................ 15
SKM 300 G2 radiomicrophone .............................................................................................. 17
Using the components .......................................................................................... 18
Switching the components on/off ...................................................................................... 18
Muting the transmitters ........................................................................................................19
Activating/deactivating the lock mode ............................................................................. 19
The operating menu ............................................................................................... 20
The buttons .............................................................................................................................. 20
Overview of menus ................................................................................................................. 20
Working with the operating menu ...................................................................................... 21
Operating menu of the receiver ........................................................................................... 23
Operating menu of the transmitters .................................................................................. 26
Adjustment tips for the operating menu .......................................................... 28
Switching between channel banks ...................................................................................... 28
Switching between the channels in a channel bank ........................................................ 28
Selecting the frequencies to be stored in the channel bank “U” .................................. 28
Scanning the channel banks for free channels (EM 300 G2 only) ................................ 29
Multi-channel operation ........................................................................................................30
Adjusting the sensitivity (transmitters only) ................................................................... 30
Adjusting the audio output level (EM 300 G2 only) ........................................................ 31
Adjusting the squelch threshold (EM 300 G2 only) ......................................................... 31
Selecting the standard display ............................................................................................. 32
Entering a name ...................................................................................................................... 33
Loading the factory-preset default settings ..................................................................... 33
Activating/deactivating the pilot tone transmission or pilot tone evaluation .......... 33
Activating/deactivating the lock mode ............................................................................. 34
Adjusting the contrast of the graphic display (EM 300 G2 only) ................................. 34
Exiting the operating menu .................................................................................................. 34
If problems occur... ................................................................................................. 35
Error checklist ......................................................................................................................... 35
Recommendations and tips .................................................................................................. 36
Care and maintenance ........................................................................................... 37
Additional information .......................................................................................... 38
HDX noise reduction ............................................................................................................... 38
Wireless transmission systems ............................................................................................ 38
Squelch ...................................................................................................................................... 39
Diversity reception ................................................................................................................. 39
Specifications .......................................................................................................... 40
onnector assignment ............................................................................................................. 41
Polar diagrams and frequency response curves of microphones/microphone heads 42
Accessories .............................................................................................................. 43
Manufacturer declarations ................................................................................... 44
Warranty regulations ............................................................................................................. 44
CE Declaration of Conformity ................................................................................................ 44
Batteries or rechargeable batteries .................................................................................... 44
WEEE Declaration .................................................................................................................... 44
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The evolution wireless series ew 300 G2
With the evolution wireless series ew 300 G2, Sennheiser offers musicians, video
and sound amateurs 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 transmission with studio-quality sound. The excellent
transmission reliability of the ew 300 G2 series 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,
y the true diversity technology (rack-mount receiver only),
y and the scan function for scanning the channel banks for free channels.
The channel bank system
The ew 300 G2 systems are available in five 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
Transmitters and receivers have nine channel banks with eight switchable
channels each.
channel 1
channel 2
channel bank 1...8
channel 8
channel 1
channel 2
channel bank U
channel 8
preset frequency
preset frequency
preset frequency
freely selectable frequency
freely selectable frequency
freely selectable frequency
The channel banks “1” to “8” have eight 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. The channel bank “U” (user bank)
has eight switchable channels to store your selection out of 1440
transmission/receiving frequencies that are freely selectable within the
preset frequency range.
An advantage of the factory-preset frequencies is that
y the systems are ready for immediate use after switch-on,
y several systems can be operated simultaneously on the preset channels
without causing intermodulation interference.
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Safety instructions
li
i
h
h
d
i
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h
Never open electronic units! If units are opened by customers in breach of this
instruction, the warranty becomes null and void.
Keep the units away from central heating radiators and electric heaters.
Never expose them to direct sunlight.
Use the units in dry rooms only.
Use a damp cloth for cleaning the units. Do not use any cleansing agents or
solvents.
System variants
Areas of application
System Areas of application
EM 300 G2
SKM 300 G2
ME 4
ME 3 headmic
Delivery includes
System
/
w 312
/
w 322
/
w 352
/
w 372
/
w 335
/
w 345
/
w 365
Theater, presentation (omni-directional)
Theater, presentation (high feedback rejection)
Sports (aerobic), vocals
Instruments
Speech, vocals
Vocals (high feedback rejection)
Vocals, presentation (high feedback rejection)
one
crop
p-on m
ME 2 c
(condenser, omni)
c
m
ea
ME 3
one
crop
p-on m
NT 2-1 mains unit
2 batteries
(condenser, cardioid)
(condenser, super-cardioid)
ME 4 c
2 telescopic antennnas
Microphone clamp
Instrument cable
Instructions for use
SK 300 G2
EM 300 G2
SK 300 G2
ME 2
SKM 300 G2 with
MD 835 mic head
(dynamic, cardioid)
/
w312
/
w322
/
w352
/
w372
/
w335
/
w345
/
w365
SKM 300 G2 with
MD 845 mic head
(dynamic, super-cardioid)
SKM 300 G2 with
ME 865 mic head
(condenser, super-cardioid)
XX X XXX X
XX X XXX X
XX X xXX X
XX XXX XX
X X XXXX X
X X XXXX X
X X XXXX X
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Overview of operating controls
EM 300 G2 rack-mount receiver
Operating controls Graphic display panel
Graphic display, backlit
/ rocker button (DOWN/UP), backlit
SET button, backlit
ON button, backlit
(serves as the ESC (cancel) key in the
operating menu)
Cable grip for power supply DC cable
DC socket for connection of mains unit (DC IN)
Audio output (AF OUT BAL),
XLR-3M socket, balanced
Audio output (AF OUT UNBAL),
¼” (6.3 mm) jack socket, unbalanced
Service interface (DATA)
Antenna input II (ANT II), BNC socket
Type plate
Antenna input I (ANT I), BNC socket
Display for the current channel bank “1...8, U”
Display for the current channel number “1...8”
“B.CH“ – abbreviation for channel B
annel number
CH
Alphanumeric display
“MHz“ – appears when the frequency is displayed
Diversity display
(antenna I or antenna II active)
“PILOT” display
(pilot tone evaluation is activated)
Level display for received RF signal “RF”
Level display for received audio signal “AF”,
with “PEAK“ warning
4-step transmitter battery status display
Lock mode icon
(lock mode is activated)
ank and
Note:
For further illustrations and examples of the different
standard displays, please refer to the section
“Selecting the standard display” on page 32.
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SK 300 G2 bodypack transmitter
Alphanumeric display
“B.CH“ – appears when the channel bank and
“MHz“ – appears when the frequency is displayed
4-step battery status display
Lock mode icon
“PILOT” display
“MUTE” display
7-step level display for audio signal “AF”
the channel number are displayed
(lock mode is activated)
(pilot tone transmission is activated)
(audio input is muted)
Operating controls LC display panel
Microphone/line input (MIC/LINE),
3.5 mm jack socket
Antenna
Red LED for operation and
battery status indication (ON/LOW BAT)
Yellow LED for audio peak (AF PEAK)
Charging contacts
SET button
/ rocker button (DOWN/UP)
Battery compartment
Battery compartment cover
Unlocking button
ON/OFF button
(serves as the ESC (cancel) key in the
operating menu)
LC display
MUTE switch
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SKM 300 G2 radiomicrophone
Operating controls LC display panel
Sound inlet basket
Color-coded identification ring for
microphone heads
green: MD 835 microphone head
blue: MD 845 microphone head
red: ME 865 microphone head
Body of radiomicrophone
Battery compartment (not visible from outside)
Display section
LC display
Turnable protective cap for operating controls
(shown removed)
The following operating controls become accessible
in turn by turning the protective cap:
Alphanumeric display
“B.CH“ – appears when the channel bank and
the channel number are displayed
“MHz“ – appears when the frequency is displayed
4-step battery status display
Lock mode icon
(lock mode is activated)
“PILOT” display
(pilot tone transmission is activated)
“MUTE” display
(audio input is muted)
7-step level display for audio signal “AF”
SET button
button (DOWN)
button (UP)
Red LED for operation and
battery status indication (ON/LOW BAT)
ON/OFF button
(serves as the ESC (cancel) key in the
operating menu)
MUTE switch
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Indications and displays on the receiver
Transmitter battery status indication
The 4-step transmitter battery status display on the receiver display panel
provides information on the transmitter’s remaining battery/accupack
BA 2015 capacity:
3 segments: capacity approx. 100 %
2 segments: capacity approx. 70 %
1 segment: capacity approx. 30 %
Battery icon flashing: LOW BAT
In addition, the text “LOW BAT” (backlit in red)
flashes in alternation with the standard display.
“MUTE” display
The “MUTE” display appears on the display panel and the backlighting of
the standard display switches from green to red. In addition, the text “MUTE”
flashes in alternation with the standard display when
y the RF signal of the received transmitter is too weak,
y the received transmitter has been muted (with the pilot tone transmission
or evaluation activated).
Modulation display
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.
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.
“PILOT” display
The “PILOT” display lights up when the pilot tone evaluation is activated
(see “Activating/deactivating the pilot tone transmission or pilot tone
evaluation“ on page 33).
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Diversity display
The EM 300 G2 receiver operates on the true diversity principle (see
“Diversity reception“ on page 39).
The diversity display indicates whether diversity section I (i.e. antenna 1)
or diversity section II (i.e. antenna 2) is active.
Button backlighting
In standby operation, the ON button is backlit in red. When the receiver is
switched on, the SET button and the / button are additionally
backlit in green.
Indications and displays on the transmitters
Operation and battery status indication
The red LED (LOW BAT/ON) provides information on the current operating
state of the transmitter:
Red LED lit up: The transmitter is switched on and the capacity of the
batteries/accupack BA 2015 is sufficient.
Red LED flashing: The batteries are/the accupack BA 2015 is going flat
(LOW BAT)!
In addition, the 4-step battery status display on the display panel provides
information on the remaining battery/accupack BA 2015 capacity.
3 segments: capacity approx. 100 %
2 segments: capacity approx. 70 %
1 segment: capacity approx. 30 %
Battery icon flashing: LOW BAT
“MUTE” display
The “MUTE” display appears on the display panel when the transmitter is
muted (see “Muting the transmitters“ on page 19).
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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.
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AF peak indication (SK 300 G2 only)
The yellow LED (AF PEAK) at the front of the SK 300 G2 lights up when the
audio input level is excessively high (AF peak) and overmodulates the
transmitter. At the same time, the 7-step level display for audio signal “AF”
shows full deflection for the duration of the overmodulation.
“PILOT” display
The “PILOT” display lights up when the pilot tone evaluation is activated.
(see “Activating/deactivating the pilot tone transmission or pilot tone
evaluation“ on page 33).
Display backlighting
After pressing a button, the display remains backlit for approx. 15 seconds.
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Preparing the components for use
EM 300 G2 rack-mount receiver
Mounting the receiver feet
To ensure that the receiver cannot slip on the surface on which it is placed,
four self-adhesive soft rubber feet are supplied.
Ensure that the base of the receiver is clean before mounting the rubber
feet.
Fix the rubber feet to the base of the receiver by peeling of the safety
paper and fitting them as shown in the digram on the left.
Attention!
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.
Connecting the antennas
The supplied telescopic antennas can be mounted quickly and easily to the
rear of the receiver and are suitable for all applications where – good
reception conditions provided – a wireless transmission system is to be used
without a large amount of installation work.
Connect the telescopic antennas to the BNC sockets and at the
rear of the receiver.
Pull the telescopic antennas out and align the upwards in a V-shape.
Use remote antennas when the receiver position is not the best antenna
position for optimum reception. These are available as accessories.
Connecting the mains unit
The EM 300 G2 is powered via a mains unit.
Pass the cable through the cable grip .
Insert the DC connector on the mains cable into the DC socket .
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$ %
Connecting the amplifier/mixing console
The EM 300 G2’s audio outputs are available as an XLR-3M socket and a
¼” (6.3 mm) jack socket , allowing you to simultaneously connect two
units (e.g. amplifier, mixing console). The adjusted audio output level is
common for both sockets.
Connect the amplifier/mixing console to the XLR-3M socket or the
¼” (6.3 mm) jack socket .
For detailed information on balanced and unbalanced connection, please
refer to the section “onnector assignment” on page 41.
Via the operating menu, adapt the level of the audio output (AF OUT) to
the input of the amplifier or mixing console (see “Adjusting the audio
output level (EM 300 G2 only)“ on page 31).
Service interface
The service interface is only required for servicing purposes.
&
#
!
19” rack adapter and antenna mount
For mounting one or two receivers into a 19” rack, you require the GA 2 rack
adapter (available as an accessory). The GA 2 rack adapter consists of:
y 2 rack mount “ears”
y 1 connecting bar
y 1 connecting plate
y 2 covering plugs ! for antenna holes
y 12 recessed head screws M 3x6
y 2 recessed head screws M 6x10
When mounting only one receiver into a rack, you can use the AM 2 antenna
mount (available as an accessory) to mount the transmitter’s antenna
connection to the front of the GA 2 rack adapter. The AM 2 antenna mount
consists of:
y 2 BNC extension cables (screw-in BNC socket " to BNC connector #)
"
y 2 plains washers
y 2 nuts
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To mount two EM 300 G2 into a rack:
Place the two receivers side by side onto a flat
surface, their bottom sides facing upwards.
Align the connecting plate over the holes in the
bottom sides of the receivers.
Secure the connecting plate to the receivers
using eight of the supplied recessed head screws
(M 3x6).
Hook the two rack mount “ears” to the front
panels of the receivers.
Secure the rack mount “ears” to the receivers using
two of the supplied recessed head screws (M 3x6)
respectively.
Slide the receivers into a 19” rack.
Screw the rack mount “ears” tight.
When mounting only one receiver into a rack, use the
connecting bar instead of the second receiver.
Hook the two rack mount “ears” to the front
panel of the receiver.
#
"
!
Secure the rack mount “ears” to the receiver using
two of the supplied recessed head screws (M 3x6)
respectively.
Secure the connecting bar to one of the rack
mount “ears” using two of the supplied recessed
head screws (M 6x10).
If you are not front mounting the antennas, insert
the two covering plugs ! into the antenna holes of
the connecting bar.
Slide the receiver into a 19” rack and screw the rack
mount “ears” tight.
To mount the receiver’s antenna connection to the
front of the GA 2 rack adapter using the AM 2 antenna
mount:
Screw the two BNC sockets " of the BNC extension
cables to the connecting bar using the supplied
plain washers and nuts.
Connect the two BNC connectors # to the BNC
sockets and at the rear of the receiver.
Slide the receiver into a 19” rack.
14
Screw the rack mount “ears” tight.
Connect the two telescopic antennas to the two
BNC sockets ".
Pull the telescopic antennas out and align them
upwards in a V-shape.
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SK 300 G2 bodypack transmitter
Inserting and replacing the batteries
For powering the SK 300 G2 bodypack transmitter, use two 1.5 V AA size
batteries.
Press the two unlocking buttons and open the battery compartment
cover .
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 locks
into place with an audible click.
Inserting and charging the accupack
The bodypack transmitter can also be powered via the rechargeable
Sennheiser BA 2015 accupack. Insert the accupack into the battery
compartment as described above.
The transmitter has two charging contacts and a sensing contact on its
short sides. The accupack can be recharged while remaining in the
transmitter. Insert the transmitter into the L 2015 charger (see operating
manual of the L 2015 charger).
Note:
For accupack operation of the transmitter, 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 transmitter 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 (batte-
ries). Due to the missing sensor, individual rechargeable battery cells
will also not be charged in the L 2015 charger.
Connecting the microphone/line cable
The microphone/line input is designed for the connection of both condenser
microphones and instruments (e.g. guitars). DC powering of the condenser
microphones is via the microphone/line input.
Connect the 3.5 mm jack plug from the microphone/line cable to the
3.5 mm jack socket (MIC/LINE) '.
Lock the 3.5 mm jack plug by screwing down the coupling ring .
Via the operating menu, adjust the sensitivity of the microphone/line
input (see “Adjusting the sensitivity (transmitters only)“ on page 30).
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Attaching the microphones
Use the microphone clips to attach the ME 2 and ME 4 clip-on
microphones to clothing (e.g. tie, lapel).
Adjust the ME 3 headmic so that a comfortable and secure fit is ensured.
Positioning the microphones
The ME 3 and ME 4 microphones are directional microphones, i.e. their sound
inlet should always be directed towards the sound source (e.g. mouth).
The ME 2 with omni-directional pick-up pattern picks up sound equally from
all directions. It is the best choice if movements of the speaker’s head have to
be compensated for. However, it should be attached as close as possible to
the sound source.
Adjust the sensitivity correctly for all microphones/usages (see “Adjusting
the sensitivity (transmitters only)“ on page 30).
Attaching the bodypack transmitter to clothing
The bodypack transmitter is attached to clothing (e.g. belt, waistband) with
the supplied belt clip.
The clip is detachable so that you can also attach the bodypack transmitter
with the antenna pointing downwards. To do so, withdraw the clip from its
fixing points and attach it the other way round.
The BPP 1 bodypack pouch (available as an accessory) helps to protect the
bodypack transmitter against moisture.
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SKM 300 G2 radiomicrophone
Inserting and replacing the batteries
For powering the SKM 300 G2 radiomicrophone, you can either use two 1.5 V
AA size batteries or the rechargeable Sennheiser BA 2015 accupack.
Unscrew the display section from the radiomicrophone’s body ( by
turning it counterclockwise.
Slide back the display section as far as it will go.
Open the battery compartment cover .
Insert the two batteries or the BA 2015 accupack as shown in the diagram
on the left. Please observe correct polarity when inserting the batteries/
accupack.
Close the battery compartment cover .
Push the battery compartment into the radiomicrophone’s body.
Screw the display section tight.
Note:
For important informations on charging the accupack see “Inserting and
replacing the batteries“ on page 15.
Changing the microphone head
First remove the batteries/accupack as described above and leave the
radiomicrophone open.
Unscrew the sound inlet basket.
Loosen the screw and put it to one side.
Gently ease the capsule out of the contacts and then pull it out of the
housing as shown. Do not touch the contacts and the diaphragm!
Insert the new capsule.
Secure the capsule by tightening the screw.
Note:
The screw mechanically secures the microphone capsule. If the screw is
missing, malfunctions may occur during tough use.
Put on the sound inlet basket and identification ring supplied with the
new microphone head (NB: do NOT use the old basket, as the different
heads use slightly differing internal foam) and screw it tight.
Insert the batteries/accupack.
Close the radiomicrophone and put it into operation.
Note:
Microphone capsule, sound inlet basket and foam insert form an acoustic
unit and must therefore always be exchanged all together. Each
microphone head comes with a color-coded identification ring to
distinguish different microphone heads from each other (green = MD 835,
blue = MD 845, red = ME 865).
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Using the components
Switching the components on/off
ew 300 G2 transmitters and receivers can only be switched off when the
standard display is shown on the display panel. Within the operating menu,
the ON button (receiver) or the ON/OFF button (transmitters) serves as the
ESC (cancel) key, i.e you cancel your entry and return to the standard display.
Note:
Remove the batteries or the accupack when the units will not be used for
extended periods of time.
Switching the rack-mount receiver on/off
Press the ON button to switch the receiver on.
To switch the receiver off, press the ON button until “OFF” appears on the
display.
Switching the bodypack transmitter on/off
Press the two unlocking buttons and open the battery compartment
cover .
Press the ON/OFF button to switch the bodypack transmitter on. The
red LED lights up.
To switch the bodypack transmitter off, press the ON/OFF button until
“OFF” appears on the display. The red LED goes off.
Close the battery compartment. The battery compartment cover locks
into place with an audible click.
Switching the radiomicrophone on/off
Turn the protective cap at the bottom of the radiomicrophone so that
the ON/OFF button becomes accessible.
Press the ON/OFF button to switch the radiomicrophone on. The red
LED lights up.
To switch the radiomicrophone off, press the ON/OFF button until
“OFF” appears on the display. The red LED goes off.
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Muting the transmitters
Both transmitters have a MUTE switch that noiselessly mutes the
transmitter’s audio signal without switching the transmitter off.
Muting the SK 300 G2 bodypack transmitter
Set the MUTE switch to the position ’MUTE’. The “MUTE” display
appears on the transmitter display panel. Provided that the pilot tone
function is activated on both the transmitter and the receiver, the “MUTE”
display also appears on the receiver display panel.
Set the MUTE switch back to the original position to retransmit the audio
signal.
Muting the SKM 300 G2 radiomicrophone
Turn the protective cap at the bottom of the radiomicrophone so that
the MUTE switch becomes accessible.
Set the MUTE switch to the position ’MUTE’. The “MUTE” display appears
on the transmitter display panel. Provided that the pilot tone function is
activated on both the transmitter and the receiver, the “MUTE” display
also appears on the receiver display panel.
Set the MUTE switch back to the original position to retransmit the audio
signal.
Activating/deactivating the lock mode
ew 300 G2 transmitters and receivers have a lock mode that can be activated
or deactivated via the operating menu (see “Activating/deactivating the lock
mode“ on page 34). The lock mode prevents that the transmitter or receiver
is accidentally programmed or switched off during operation.
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The operating menu
A special feature of the Sennheiser ew 300 G2 series is the similar, intuitive operation. As a result, the units are easy
to operate and 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 Mode To ...
ON/OFF
or
ON
(EM 300 G2 only)
SET Standard display get into the operating menu
/ Standard display without function
Standard display turn the transmitter or receiver on and off
Operating menu cancel the entry and return to the standard display
Setting mode cancel the entry and return to the standard display
Operating menu get into the setting mode of the selected menu
Setting mode store the settings and return to the previous menu level
Operating menu change to the previous menu () or change to the next menu
()
Setting mode adjust the setting of the selected menu: option (/)
Overview of menus
Receiver Transmitters
Display Function of the menu Display Function of the menu
Bank Switching between channel banks BANK Switching between channel banks
Channel Switching between the channels in a
channel bank
Tune Setting a receiving frequency for the
channel bank “U” (user bank)
CHAN Switching between the channels in a
channel bank
TUNE Setting a transmission frequency for the
channel bank “U” (user bank)
⎯⎯
Scan Scanning the channel banks for free
channels
AF Out Adjusting the audio output level
Squelch Adjusting the squelch threshold
Display Selecting the standard display DISPLY Selecting the standard display
Name Entering a name NAME Entering a name
Reset Loading the factory-preset default settings RESET Loading the factory-preset default settings
Pilot Activating/deactivating the pilot tone
evaluation
Lock Activating/deactivating the lock mode LOCK Activating/deactivating the lock mode
LCD Contr Adjusting the contrast of the graphic display
Exit Exiting the operating menu and returning
to the standard display
SENSIT Adjusting the sensitivity (AF)
⎯⎯
⎯⎯
⎯⎯
PILOT Activating/deactivating the pilot tone
transmission
⎯⎯
EXIT Exiting the operating menu and returning
to the standard display
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EM 300 G2
Transmitters
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.
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 receiver,
the current setting is additionally displayed.
Selecting a menu
Press the / buttons to select a menu.
Press the SET button to get into the setting mode of the selected menu.
With the transmitters, the current setting that can be adjusted flashes on
the display. With the receiver, the name of the menu and the current
setting are displayed.
Adjusting a setting
Press the / buttons to adjust the setting.
By briefly pressing the / buttons, the display jumps either forwards or
backwards to the next setting. In the “Channel”, “Tune” and “Name”
menu, the /
a button, the display cycles continuously. The “fast search” function
allows you to get fast and easily to your desired setting. With the
transmitters, 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.
buttons feature a “fast search” function. If you hold down
With most menus, new settings become effective immediately without
having to be stored. An exception are the “BANK”, “CHAN”, “TUNE” and
“RESET” menus of the transmitters and the “Reset” menu of the receiver.
With these menus, new settings only become effective after they have
been stored and “Stored” had appeared on the display.
21
Page 22
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 ON/OFF button or the
ON button (EM 300 G2 receiver only) serves as the ESC (cancel) key, i.e. by
briefly pressing the ON/OFF or POWER button, you cancel your entry and
return to the standard display.
22
Page 23
Operating menu of the receiver
/
/
SET
Exit
Menu
Exit
Bank 1
Channel 01
Changing the channel bank
Menu
Bank 3
Channel 01
Tune 786.400MHz
Changing the channel
Menu
Channel 08
Tune 807.900MHz
Scan
Setting the frequency for
channel bank "U"
SET
SET
SET
Bank
1.01
B.CH
Current channel bank
786.300 MHz
Stored
Channel
3.01
B.CH
Current channel and
corresponding frequency
790.250 MHz
Stored
Tune
U.01
B.CH
Current frequency on the
selected channel
786.300 MHz
Bank
3.01
B.CH
/ :
SET
790.250 MHz
1...8, U (User Bank)
:
Stores the setting
Channel
3.08
B.CH
/ :
SET
807.900 MHz
Channel 01...08
:
Stores the setting
Tune
U.01
B.CH
/ :
steps of 25 kHz
SET
797.075 MHz
Receiving frequency in
:
Stores the setting
Menu
Tune 797.075MHz
Scan
AF Out +18
Scanning the channel banks
for free channels
SET
Scan
Channel list
Scan new
Scan reset
Channel list = Last scan
result, Scan new = Starts a
new scan, Scan reset =
Deletes the last scan result
Bank
1082083034
Free
506608702801U
Bank
Free
Number of free channels per
channel bank
: Selects a channel bank
SET: Changes to the "Channel"
menu
Channel
1.03
B.CH
Channel and corresponding
frequency
/ :
SET
790.600 MHz
Channel 01...08
:
Stores the setting
Stored
SET
04
SET
SET
08
Scan new Scan reset
SET = Starts a new scan
SET
SET: Deletes the scan result
and releases locked
channels
Scan
1.01
B.CH
Scans all channel banks for
free channels
786.300 MHz
Bank
1082083084
Free
Bank
508608708808U
Free
/ :
Selects a channel bank
SET:
Bank
Free
Bank
Free
1022083024
08
504605708803U
08
Number of free channels per
channel bank
: Selects a channel bank
SET: Changes to the "Channel"
menu
SET
Changes to the "Channel"
menu
SET
08
08
SET
AF Out +18
STORED
Stored
23
Page 24
Scan
Menu
Scan
AF Out +1 8
Squelch High
Setting the audio output
level
Menu
AF Out –2 4
Squelch Low
Display
Setting the squelch
threshold
Menu
Squelch High
Display Main
Name VOCAL
Switching between the
standard displays
SET
SET
SET
AF Out
+18
Current audio output level
Stored
Squelch
Low
Current squelch threshold
Stored
Display
Main
Current standard display
Stored
AF Out
–24
/ :
+18 ...0...
(in steps of 6 dB)
SET: Stores the setting
–24 dB
Squelch
High
/ :
Low, Mid, High
SET
:
Stores the setting
Display
Frequency
/ :
Main, Frequency,
Bank/Channel, Name, AFMeter, Second RF
SET
:
Stores the setting
Menu
Display Frequency
Name VOCAL
Reset
Assigning the receiver a
name
Menu
Name GUITAR
Reset
Pilot On
Loading the factory-preset
default settings
Pilot On/Off
Main
Name
SET
SET
Name
OCAL
Current receiver name
Stored
Reset
Reset? No
Security check
Frequency
AF-Meter
Bank/Channel
Second RF
Name
CAL
G
/ :
Name
Letters w/o pronounciation
(10 characters)
marks, numbers from 0...9,
special characters, spaces
SET: 9 x next character, then
store
Reset
Reset? Yes
/ : No, Yes
"reset"= Yes:
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
24
Page 25
Reset
Menu
Reset
Pilot On
Lock Off
Activating/deactivating the
pilot tone evaluation
Menu
Pilot Off
Lock Off
LCD Contr IIIIII.....
Activating the lock mode
Menu
Lock On
LCD Contr IIIIII.....
Exit
Adjusting the contrast of the
graphic display
SET
Pilot
On
Pilot tone evaluation
activated or deactivated
SET
Lock
Off
Lock mode activated or
deactivated
SET
LCD Contrast
IIIIII..........
Current contrast setting
STORED
STORED
Pilot
Off
/ :
On, Off
SET
:
Stores the setting
Lock
On
/ :
On, Off
Lock mode = On:
SET: Stores the setting,
returns to standard display
Lock mode = Off:
SET:
Stores the setting
LCD Contrast
IIIIIIIIII......
/ :
16 steps
SET:
Stores the setting
Menu
LCD Contr IIIIIIIIII......
Exit
Bank 1
Exiting the operating menu
Bank 1
STORED
SET
25
Page 26
Operating menu of the transmitters
1
U
FREQ
NAME
790.025
791.125
EXIT
SET
BANK
Changing the channel
bank
CHAN
Changing the channel
TUNE
Setting the frequency for
channel bank "U"
SET
SET
SET
BANK
Current channel bank
STORED
1.03
Current channel (display
depends on "DISPLY"
setting)
B.CH
STORED
790.025
Current frequency on
the selected channel
MHz
STORED
BANK
/ :
1...8, U (User
Bank)
SET
:
Stores the setting
1.02
/ :
Channel 01...08
SET
:
Stores the setting
791.125
/ :
Transmission
frequency in steps of
25 kHz
B.CH
MHz
SENSIT
Setting the sensitivity
DISPLY
Switching between the
standard displays
NAME
SET
Current sensitivity
setting
STORED
SET
Current standard display
STORED
-10 dB
FREQ
/
SK 300 G2: 0...-30 dB
SKM 300 G2: 0...-30 dB
SET
/
CHAN
SET
-30 dB
:
:
Stores the setting
NAME
: FREQ, NAME,
:
Stores the setting
26
Page 27
DISPLY
/
ON
OFF
OFF
ON
NO
OK
V
NAME
Assigning the
transmitter a name
RESET
Loading the factorypreset default settings
PILOT
Activating/deactivating
the pilot tone
transmission
SET
SET
SET
OCAL GUCAL
Current transmitter
name
STORED
/ :
Letters w/o pronounciation
marks, numbers from 0...9,
special characters, spaces
SET: 5 x next character,
then store
RST. NO
Security check
/ :
"reset" = OK:
SET:
factory-preset default
settings (only pilot tone
setting is kept), transmitter is
restarted, standard display
"reset" = NO
SET
PLT. ON
Pilot tone transmission
activated or deactivated
/ :
SET
STORED
Name (6 characters)
RST. OK
OK, NO
Transmitter loads
:
Reset is cancelled
PLT. OFF
ON, OFF
:
Stores the setting
LOCK
Activating the lock
mode
EXIT
Exiting the operating
menu
BANK
SET
SET
LOC.OFF
Lock mode activated or
deactivated
STORED
LOC.ON
:
ON, OFF
Lock mode = ON:
SET:
Stores the setting
(STORED), returns to
standard display
Lock mode = OFF:
SET: Stores the setting
27
Page 28
Adjustment tips for the operating menu
Switching between channel banks
BANK
Bank
CHAN
Channel
Via the “Bank” menu, you can switch between the nine channel banks. The
channel banks “1” to “8” have eight switchable channels that are factorypreset to a transmission/receiving frequency (see “The channel bank
system“ on page 4). The channel bank “U” (user bank) has eight switchable
channels to store your selection out of 1440 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 (see “Scanning the channel banks for free
channels (EM 300 G2 only)“ on page 29), the receiver display panel
automatically displays the next free channel.
Switching between the channels in a channel bank
Via the “Channel” menu, you can switch between the eight channels in a
channel bank.
Always set the transmitter and the receiver of a transmission link to the same
channel. After scanning the channel banks (see “Scanning the channel banks
for free channels (EM 300 G2 only)“ on page 29), only the free channels are
displayed. Set the transmitter to one of the free channels.
TUNE
Tune
Selecting the frequencies to be stored in the channel bank “U”
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 / buttons 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 intermodulationfree frequencies, please refer to the enclosed frequency table.
28
Page 29
Scanning the channel banks for free channels (EM 300 G2 only)
Scan
Scan
Channel list
Scan new
Scan reset
Bank
Free
Bank
Free
Channel
1.01
B.CH
1082083034
506608702801U
786.300 MHz
Before putting one or several transmission links into operation, you should
scan the channel banks for free channels.
Displaying the last scan result
Select the “Scan” menu.
Select “Channel list” to display the last scan result. The number of free
channels is displayed for all channel banks.
04
08
For further details, select a channel bank by using the / buttons and
then press the SET button. This gets you into the “Channel” menu where
you can select a channel of this channel bank or display the frequency of
a channel.
Starting the scan
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”.
Scan
Channel list
Scan new
Scan reset
Bank
Free
Bank
Free
Scan
Channel list
Scan new
Scan reset
Bank
Free
Bank
Free
1082083034
506608702801U
1082083084
508608708808U
04
08
Select the “Scan” menu.
Select “Scan new” and confirm your selection by pressing the SET button.
After the scan is completed, the number of free channels is displayed for
all channel banks. Channels that are used or subject to interference are
locked and cannot be selected.
For further details, select a channel bank by using the / buttons and
08
08
then press the SET button. This gets you into the “Channel” menu where
you can select a channel of this channel bank or display the frequency of
a channel.
Releasing locked channels
Select the “Scan” menu.
Select “Scan reset” and confirm your selection by pressing the SET button.
The last scan result is deleted and all channels can now be selected again.
29
Page 30
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.
Scan a receiver for free channels.
Bank
Free
Bank
Free
506608702801U
SENSIT
1082083034
04
Select a channel bank with a sufficient number of free channels.
Apply the scan result to all other transmitters and receivers.
08
Adjusting the sensitivity (transmitters only)
Via the “SENSIT” menu, you can adjust the transmitters’ input sensitivity.
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 SK 300 G2’s yellow LED (AF PEAK) )
will light up and the receiver’s level display for audio signal “AF” will show full
deflection (see “AF peak indication (SK 300 G2 only)“ on page 11).
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.
Note:
For monitoring the adjusted sensitivity, the transmitter’s level display for
audio signal “AF” always indicates the audio level – even if the
transmitter is muted.
The following figures are a guide to the best settings:
y Loud music/vocals: –30 to –20 dB
y Presentations: –20 to –10 dB
y Interviews: –10 to 0 dB
y Musical instruments:
– electric guitars with single coil pickups: –10 to 0 dB
– electric guitars with humbucker pickups: –20 to –10 dB
– guitars with active electronics
(active pickups, active EQs, piezo pickups): –30 to –20 dB
30
Page 31
Adjusting the audio output level (EM 300 G2 only)
AF Out
Squelch
Via the “AF Out” menu, you can adjust the audio output level of the receivers.
The level can be adjusted in eight steps. Adapt the level of the audio output
(AF OUT) to the input of the connected unit. The following figures are a guide
to the best settings:
Line level input: 0 to +18 dB
Microphone level input: –24 to –6 dB
Adjusting the squelch threshold (EM 300 G2 only)
The receiver is equipped with a squelch that can be adjusted via the
“Squelch” 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, set the
volume on a connected amplifier to the minimum.
There are three possible squelch settings:
y Low = low
y Mid = middle
y High = high
Selecting the setting (Low) reduces the squelch threshold, selecting the
setting (High) increases the squelch threshold. Adjust the squelch threshold
– with the transmitter switched off – to the lowest possible setting that
suppresses hissing noise.
IMPORTANT! Notes:
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.
When in the setting mode of the “Squelch” menu, pressing the button
(DOWN) for more than three seconds will switch the squelch off. “Off”
appears on the display. If no RF signal is being received, hissing noise will
occur. This setting is for test purposes only.
31
Page 32
Selecting the standard display
DISPLY
Display
Via the “Display” menu, you can select the standard display:
EM 300 G2 rack-mount receiver
Selectable standard display Contents of standard display
“Main”
(standard display)
“Frequency”
(display of the frequency)
“Bank/Channel”
(display of the channel bank
and channel number)
“Name”
(display of the freely selectable
name)
“AF meter”
(graphic display of the AF level)
“Second RF”
(display of the RF levels of the
two diversity sections)
SK 300 G2 body pack transmitter and SKM 300 G2 radiomicrophone
Selectable standard display Contents of standard display
“FREQ”
“NAME”
“CHAN”
32
Page 33
Entering a name
NAME
Name
Via the “Name” menu, you can enter a freely selectable name for each
transmitter and 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
six characters (transmitters) and up to ten 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 / buttons 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.
RESET
Reset
PILOT
Pilot
Loading the factory-preset default settings
Via the “Reset” menu, you can load the factory-preset default settings. Only
the selected setting for the pilot tone remains unchanged. After the reset, the
unit is restarted and the standard display is shown on the display panel.
Activating/deactivating the pilot tone transmission or pilot tone evaluation
Via the “Pilot” menu, you can activate or deactivate the pilot tone
transmission of the transmitters and the pilot tone evaluation of the receiver.
The pilot tone supports the squelch function (Squelch) and protects against
interference due to RF signals from other units. The transmitter adds an
inaudible signal, known as the pilot tone, to the transmitted signal. The
receiver detects and evaluates the pilot tone, and is thus able to identify the
signal of the matching transmitter and mute all others.
Transmitters of the ew 300 series (first generation) do not transmit a pilot
tone and the receiver of the ew 300 series (first generation) cannot evaluate
the pilot tone. Nevertheless, you can combine units of the ew 300 series (first
generation) with units of the ew 300 G2 series (second generation).
However, when combining units, please observe the following:
y With an ew 300 G2 transmitter and the ew 300 G2 receiver:
Activate the pilot tone function with both transmitter and receiver.
y With an ew 300 transmitter and the ew 300 G2 receiver or vice versa:
Deactivate the pilot tone function with the ew 300 G2 transmitter or receiver.
33
Page 34
Activating/deactivating the lock mode
LOCK
Lock
Transmitters
LCD-Contr
EM 300 G2
Via the “Lock” menu, you can activate or deactiveate the lock mode.
The lock mode prevents that the transmitter or receiver is accidentally
programmed or switched off during operation. The lock mode icon on the
display indicates that the lock mode is activated.
To deactivate the lock mode, first press the SET button and then press the /
buttons to select “Lock Off”. If you confirm your selection by pressing the
SET button, the buttons can be operated as usual.
Adjusting the contrast of the graphic display (EM 300 G2 only)
Via the “LCD Contr” menu, you can adjust the contrast of the graphic display
in 16 steps.
EXIT
Exit
Exiting the operating menu
Via the “Exit” menu, you can exit the operating menu and return to the
standard display.
34
Page 35
If problems occur...
Error checklist
Problem Possible cause Possible solution
No operation indication Batteries are flat or
accupack is flat
No mains connection (EM 300 G2) Check the connections of the mains unit
No RF signal Transmitter and receiver are not on the
same channel
Transmitter is out of range Check the squelch threshold setting
RF signal available, no audio
signal, “MUTE” display appears
on the display panel
Audio signal has a high level of
background noise
Audio signal is distorted Transmitter sensitivity is adjusted too
No access to a certain channel During scanning, an RF signal has been
Transmitter is muted (“MUTE”) Deactivate the muting function
Receiver’s squelch threshold is adjusted
too high
Transmitter doesn’t transmit a
pilot tone
Transmitter sensitivity is adjusted too
low
Receiver’s AF output level is adjusted
too low
high
Receiver’s AF output level is adjusted
too high
detected on this channel and the
channel has been locked
During scanning, a transmitter of your
system operating on this channel has
not been switched off
Replace the batteries or
recharge the accupack
Set transmitter and receiver to the
same channel
(see “Adjusting the squelch threshold
(EM 300 G2 only)“ on page 31) or
reduce the distance between
transmitter and receiving antenna
See “Adjusting the squelch threshold
(EM 300 G2 only)” on page 31
See “Activating/deactivating the pilot
tone transmission or pilot tone
evaluation” on page 33
See “Adjusting the sensitivity
(transmitters only)” on page 30
See “Adjusting the audio output level
(EM 300 G2 only)” on page 31
See “Adjusting the sensitivity
(transmitters only)” on page 30
See “Adjusting the audio output level
(EM 300 G2 only)” on page 31
See “Scanning the channel banks for
free channels (EM 300 G2 only)” on
page 29
See “Multi-channel operation” on
page 30
If problems occur that are not listed in the above table or if the problems cannot be solved with the proposed
solutions, please contact your local Sennheiser agent for assistance.
35
Page 36
Recommendations and tips
... for the ME 2 and ME 4 clip-on microphones
y To reduce level variations to a minimum when the user turns his or her head
away from the microphone, attach the microphone as centrally as possible.
y To protect the microphone against excessive sweat/moisture, avoid direct
skin contact.
y Attach the microphone carefully and conduct the cable so that noise due to
friction is avoided.
y Always use the ME 4 directional microphone with a windshield and direct
the microphone towards the sound source (e.g. mouth).
... for the ME 3 headmic
y Always use the microphone with a popshield and position the microphone
at the corner of the mouth.
y You can vary the bass reproduction by increasing/decreasing the talking
distance.
y Make sure that the sound inlet is directed towards the mouth. The sound
inlet is marked with a little dot.
... for the SK 300 G2 bodypack transmitter
y Make sure that the antenna and the microphone cable do not cross.
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.
y For best results, make sure that the transmitter sensitivity is correctly
adjusted.
... for the SKM 300 G2 radiomicrophone
y Hold the SKM 300 G2 in the middle of the microphone body. Holding it close
to the sound inlet basket will influence the microphone’s pick-up pattern,
holding it at the lower part of the body will reduce the transmitter’s range.
y You can vary the bass reproduction by increasing/decreasing the talking
distance.
y For best results, make sure that the transmitter sensitivity is correctly
adjusted.
... 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 EM 300 G2 receiver, reception conditions are unfavourable, you
should use two remote antennas which are 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 receiving antennas and
metal objects (such as cross members or reinforced-concrete walls).
36
Page 37
... 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 eight factorypreset 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.
y Use special accessories for multi-channel applications (see “Accessories“ on
page 43).
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.
To clean the SKM 300 G2’s sound inlet basket, proceed as follows:
Unscrew the sound inlet basket (turn counterclockwise) and remove it.
Remove the foam insert.
Use a slightly damp cloth to clean the sound inlet basket from the inside
and ouside.
Reinsert the foam insert.
Replace the sound inlet basket on the SKM 300 G2 and screw it tight
(taking care not to loose the colored identification ring).
37
Page 38
Additional information
r
HDX noise reduction
RF link
Inherent noise
of the RF link
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-tonoise 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. A 110 dB dynamic range signal is thus transmitted with
an effective dynamic range of only 55 dB, which is above the 60 dB 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.
Receive
Wireless transmission systems
38
With the ew 300 G2 series, 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.
There are two transmitter versions: The hand-held transmitter is a complete
radiomicrophone in a single unit, the bodypack transmitter can accept a wide
range of inputs including: omni-directional or cardioid clip-on microphones,
head-worn microphone, guitar/instrument direct input and auxiliary units
via the optional CL 2 line input cable.
Correct adjustment of transmitter sensitivity is vital. Too high and you get
overmodulation and distortion, too low and you get undermodulation and a
Page 39
noisy signal. Please set the sensitivity correctly for the microphone/usage
and check it before every performance to ensure best operation.
Sennheiser miniature clip-on microphones can be attached in various ways:
they can, for example, be attached to the hairline or to clothing (e.g. tie or
lapel). However it is fixed, please make sure that the microphone is protected
against sweat/moisture and make-up.
Squelch
Pilot tone squelch
The transmitter adds a 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
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.
In order to benefit from this feature, the pilot tone function must be activated
on both the transmitter and the receiver. The pilot tone function is factorypreset to “ON” (= activated).
Field strength-dependent squelch
Depending on the strength of the received RF signal, the receiver’s audio
output is opened or muted. Via the “Squelch” menu of the receiver, the
squelch threshold can be adjusted in three steps (Low, Mid, High).
Diversity reception
The EM 300 G2 receiver operates on the “true diversity” principle:
A receiving antenna receives not only the electromagnetic waves which reach
it by a direct path, but also the reflections of these waves which are created
in the room by walls, windows, ceilings and fittings. When these waves are
superimposed, destructive interference occurs, which can also be called “field
strength gaps”. Repositioning the receiving antenna can bring a solution.
With mobile transmitters, however (which all radiomicrophones are), the
“field strength gap” will then occur with a different transmitter position.
These “field strength gaps” can only be eliminated with true diversity
receivers.
In true diversity, instead of one antenna and one receiver there are now two
antennas and two receiver sections. The antennas are spatially separated. By
means of a comparison circuit, the receiver section with the strongest RF
signal is always switched to the common AF output. The risk of the
occurrence of “field strength gaps” in both antennas at the same time is
virtually nonexistant.
The receiver display panel shows the active diversity section (I or II) .
Receiver section I
Control signal
Electronic
switch-over of
AF signal
Control signal
Receiver section II
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Specifications
System
RF characteristics
Modulation wideband FM
Frequency ranges 518–554, 626–662, 740–776, 786–822, 830–866 MHz
Transmission/receiving frequencies 8 channel banks with 8 factory-preset channels each
1 channel bank with 8 freely selectable channels
(1440 frequencies, tunable in steps of 25 kHz)
Switching bandwidth 36 MHz
Nominal/peak deviation ±24 kHz/±48 kHz
Frequency stability ≤ ±15 ppm
AF characteristics
Noise reduction system Sennheiser HDX
AF frequency response 40–18,000 Hz
S/N ratio (at 1 mV and peak deviation)
THD (at nominal deviation and 1 kHz) ≤ 0.9 %
General data
Temperature range –10 °C to +55 °C
Dimensions of carrying case [mm] 380 x 370 x 70
Weight of carrying case approx. 3100 g
112 dB(A)
≥
Receiver
RF characteristics EM 300 G2
Receiver principle true diversity
Sensitivity (with HDX, peak deviation) < 2.5 μV at 52 dBA
Adjacent channel rejection ≥ 68 dB
Intermodulation attenuation ≥ 68 dB
Blocking ≥ 72 dB
Squelch 4 steps: Off
Low: 5 dBμV
Mid: 15 dBμV
High: 25 dBμV
Pilot tone squelch can be switched off
Antenna inputs 2 BNC sockets
AF characteristics
AF output voltage (at peak deviation 1 kHzAF)
Overall device
Power supply 10.5 – 16 V DC, nominal voltage 12 V DC
Power consumption approx. 200 mA
Dimensions [mm] 212 x 145 x 38
Weight approx. 1100 g
¼’’ (6.3 mm) jack socket (unbalanced): +12 dB
XLR socket (balanced): +18 dB
S/N ratio
rms
u
u
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Transmitters
RF characteristics SK 300 G2 SKM 300 G2
RF output power at 50 Ω typ. 30 mW
AF characteristics
Max. input voltage (at peak deviation) Microphone 1.8 V
Line 2.4 V
, unbalanced –
rms
rms
–
Input impedance Microphone 10 kΩ, unbalanced –
Line 1 MΩ –
Overall device
Power supply 2 AA size batteries, 1.5 V
Nominal voltage 2.4 V
Max. power consumption at nominal voltage ≤ 170 mA ≤ 170 mA
Power consumption with
≤ 250 μA ≤ 250 μA
switched-off transmitter
Operating time (with batteries) ≥ 8 h ≥ 8 h
Operating time (with BA 2015 accupack) ≥ 8 h ≥ 8 h
Dimensions [mm] 82 x 64 x 24 ∅ 50 x 225
Weight (incl. batteries) approx. 158 g approx. 450 g
Microphones
ME 2ME 3ME 4
Transducer principle condenser condenser condenser
Sensitivity 20 mV/Pa 1.6 mV/Pa 40 mV/Pa
Pick-up pattern omni-driectional super-cardioid cardioid
Max. SPL 130 dB SPL 150 dB SPL 120 dB SPL
Microphone heads
MD 835 MD 845 ME 865
Transducer principle dynamic dynamic condenser
Sensitivity 1.5 mV/Pa 1 mV/Pa 3 mV/Pa
Pick-up pattern cardioid super-cardioid super-cardioid
Max. SPL 150 dB SPL 154 dB SPL 144 dB SPL
Color of identification ring green blue red
onnector assignment
EM 300 G2:
¼’’ (6.3 mm) stereo jack
plug, unbalanced
NC/GND
EM 300 G2:
¼’’ (6.3 mm) mono jack
plug, unbalanced
EM 300 G2:
XLR-3F connector, balanced
21
+
3
M 300 G2:
DC connector for
power supply
SK 300 G2:
3.5 mm jack plug
NC/GND
Instr./MIC
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Polar diagrams and frequency response curves of microphones/microphone heads
Polar diagrams of microphones/microphone heads
MD 835 ME 865 ME 3
MD 845 ME 4
Frequency response curves of microphones/microphone heads
MD 835 ME 2
MD 845 ME 3
ME 865 ME 4
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Accessories
MD 835 Microphone head for SKM 300 G2 (green identification ring),
dynamic, cardioid
MD 845 Microphone head for SKM 300 G2 (blue identification ring),
dynamic, super-cardioid
ME 865 Microphone head for SKM 300 G2 (red identification ring),
condenser, super-cardioid
MZW 1 Wind- and popshield for SKM 300 G2
MZQ 1 Microphone clamp for SKM 300 G2
ME 2 Clip-on microphone for SK 300 G2,
condenser, omni-directional
ME 4 Clip-on microphone for SK 300 G2,
condenser, cardioid
ME 3 Headmic for SK 300 G2,
condenser, super-cardioid
CI 1 Instrument cable for SK 300 G2,
with
¼” (6.3 mm) jack plug
CL 2 Line input cable for SK 300 G2,
with XLR-3F connector
GA 2 19” rack adapter
AM 2 Antenna mount for mounting antennas to the front of the GA 2
A 1031-U UHF antenna,
passive, omni-directional, can be mounted onto a stand
AB 2-A UHF antenna booster,
10 dB gain powered via ASP 2/NT1 518–554 MHz
AB 2-B 626–662 MHz
AB 2-C 740–776 MHz
AB 2-D 786–822 MHz
AB 2-E 830–866 MHz
GZL 1019-A1 / 5 / 10 Antenna cable with BNC connectors 1 m / 5 m / 10 m
ASP 2 Antenna splitter,
2 x 1:4, passive, for connecting eight EM 300 G2
to two A 1031-U/AB 2
NT 1 Mains unit for ASP 2
DC 2 DC power adapter,
for external 12 V DC powering of SK 300 G2
(instead of two AA size batteries)
BA 2015 Accupack for SK 300 G2 and SKM 300 G2
L 2015 Charger for BA 2015 accupack
CC 2 Carrying case for ew 300 G2 system
KEN 8 color-coded identification caps for SKM 300 G2
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Manufacturer declarations
Warranty regulations
The guarantee period for this Sennheiser product is 24 months from the date of
purchase. Excluded are accessory items, rechargeable or disposable batteries that are
delivered with the product; due to their characteristics these products have a shorter
service life that is principally dependent on the individual frequency of use.
The guarantee period starts from the date of original purchase. For this reason, we
recommend that the sales receipt be retained as proof of purchase. Without this proof
(which is checked by the responsible Sennheiser service partner) you will not be reimbursed for any repairs that are carried out.
Depending on our choice, guarantee service comprises, free of charge, the removal of
material and manufacturing defects through repair or replacement of either individual parts or the entire device. Inappropriate usage (e.g. operating faults, mechanical
damages, incorrect operating voltage), wear and tear, force majeure and defects
which were known at the time of purchase are excluded from guarantee claims. The
guarantee is void if the product is manipulated by non-authorised persons or repair
stations.
In the case of a claim under the terms of this guarantee, send the device, including
acces-sories and sales receipt, to the responsible service partner. To minimise the risk
of transport damage, we recommend that the original packaging is used. Your legal
rights against the seller, resulting from the contract of sale, are not affected by this
guarantee.
The guarantee can be claimed in all countries outside the U.S. provided that no national law limits our terms of guarantee.
CE Declaration of Conformity
This equipment is in compliance with the essential requirements and other relevant
provisions of Directives 1999/5/EC, 89/336/EC or 73/23/EC. The declaration is available on the internet site at www.sennheiser.com.
Before putting the device 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 sepa-
rately 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.
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Sennheiser electronic GmbH & Co. KG
30900 Wedemark, Germany
Phone +49 (5130) 600 0
Fax +49 (5130) 600 300
www.sennheiser.com
Printed in Germany Publ. 02/06 090610/A2
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