Sennheiser evolution D1 Installation guide

evolution wireless D1
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0 or 1, on or off – and when on, then truly on:
evolution wireless D1 is a digital sound
transmission system that makes no
compromise when it comes down to reliability,
sound quality and user-friendliness.
Do you still have questions? Find the answers
to your questions here.
General Audio Radio Firmware update

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Contents
General
Q: Which frequency band does the digital ew D1 system use? .3
Q: Where can I set the transmission frequency for the ew D1
system? .................................................................................................3
Q: How long after switch-on are the radio links established and
operational?..........................................................................................3
Q: How should I setup the system to get the best transmission
results? ..................................................................................................3
Q: What is the best position for the receiver in the room? ........4
Q: Can I use the ew D1 system simultaneously with active WiFi
connections?.........................................................................................4
Q: Does an ew D1 system interfere with a WiFi connection so
that dropouts and errors can occur during data exchange via
WiFi?............................................................................................................4
Q: What can I do if my Bluetooth devices do not work when ew
D1 radio links are operated in proximity?......................................4
Q: Why does the operating time of the transmitter vary (only
applies to the -NH country variant for the Americas)?................4
Q: Which batteries can I use? ............................................................4
Q: Can I also power the transmitters using accupacks?...............4
Q: Why does the status LED on my transmitter or receiver flash
red?.........................................................................................................5
Q: What does pairing mean? .............................................................5
Q: Why does the pairing process or the connection
establishment take so long? .............................................................5
Audio
Q: Why is the audio of my system disturbed?...............................6
Q: Why is the audio of my system distorted?................................6
Q: Why does the receiver’s output level overload the mixing
console?.................................................................................................7
Q: Why is the receiver’s output signal too weak at the input of
the mixing console? ............................................................................7
Q: Where can I adjust the input sensitivity of the transmitter? 7
Q: Why is there noise interference when I connect my guitar to
a bodypack transmitter?....................................................................7
Q: Which audio effect should I use when?......................................7
Q: What is a de-esser? ........................................................................7
Q: Which microphone heads are compatible with the ew D1
system? .................................................................................................7
Q: Why does the mute switch not function?..................................7
Radio
Q: Why does the RF signal level display keep changing? ............8
Q: Why are radio links of only a few meters subject to signal
dropouts or even link breaks?...........................................................8
Q: Why are some radio links subject to interference?..................8
Firmware update
Q: Why should I update the firmware of my receivers or
transmitters?........................................................................................9
Q: How can I update the firmware of my receivers or
transmitters?........................................................................................9
Q: Why is the firmware update from the receiver to the
transmitter interrupted?....................................................................9

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With systems for vocals or for instruments, a band’s life
is made simpler: transmitters and receivers automatically
pair and select suitable transmission frequencies, while
multiple ew D1 systems automatically coordinate them-
selves.
ew D1 operates in the 2.4 GHz frequency range, which is
license-free worldwide so there is no need to register the
system or pay for the use of bandwidth. Region-specific
particularities are catered for in the respective country
variants.
To allow co-existence with WiFi, Bluetooth and other
2.4 GHz systems, each receiver continually scans the
RF environment. If any interference is detected, the ew D1
system will inaudibly and seamlessly hop to another
frequency.
Q: How should I setup the system to get the
best transmission results?
A: If possible, change the position of the transmit-
ters and receivers so that there is always a direct line
of sight between the associated transmitters and
receivers.
A: Switch off all other radio links operating in the
2.4 GHz frequency band or try to keep the distance
between potential sources of interference and the
ew D1 system components as large as possible.
Sources of interference are devices, such a WiFi
routers or Bluetooth-enabled devices, that operate
in the same frequency band as the ew D1 system
components. We recommend a minimum distance
of 10 meters between a WiFi router and the ew D1
system components.
A: Certain building layouts (e.g. very large, empty
halls) and materials (metal building materials in
walls and ceilings) can also reduce the transmission
range.
A: When rack-mounting receivers, you should mount
their antennas to the front of the rack using the GA4
rack-mount kit.
If more than six radio links are to be
established: When switching the devices
on and off, proceed as described in the
“Multichannel Operation” leaflet (Link)!
Allgemein
Q: Which frequency band does the digital
ew D1 system use?
A: The ew D1 system operates in the 2.4 GHz
frequency band. The use of the 2.4 GHz band is
license-free and free-of-charge.
Q: Where can I set the transmission
frequency for the ew D1 system?
A: With an ew D1 system, the manual setting of
the transmission frequency is neither necessary nor
possible. The system continually scans the entire
2.4 GHz frequency band and automatically selects
suitable transmission frequencies. Frequencies
already allocated to other systems are not used
here.
Q: How long after switch-on are the radio
links established and operational?
A: The receivers and transmitters will take up to
10 seconds to establish the radio links. This time can
vary depending on the environment, the number
of sources of interferences and the number of
additional ew D1 radio links in use.
If more than six radio links are to be
established: When switching the devices
on and off, proceed as described in the
“Multichannel Operation” leaflet (Link)!
A: If the maximum number of radio links has
already been reached, additional radio links cannot
be established. Up to 15 radio links can be used
simultaneously in a completely interference-free
environment.
General

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Q: What is the best position for the receiver
in the room?
A: If possible, change the position of the transmit-
ters and receivers so that there is always a direct line
of sight between the associated transmitters and
receivers.
A: Switch off all other radio links operating in the
2.4 GHz frequency band or try to keep the distance
between potential sources of interference and the
ew D1 system components as large as possible.
Sources of interference are devices, such a WiFi
routers or Bluetooth-enabled devices, that operate
in the same frequency band as the ew D1 system
components. We recommend a minimum distance
of 10 meters between a WiFi router and the ew D1
system components.
A: Certain building layouts (e.g. very large, empty
halls) and materials (metal building materials in
walls and ceilings) can also reduce the transmission
range.
Q: Can I use the ew D1 system simultane-
ously with active WiFi connections?
A: In general, this is possible. You can, for example,
control the ew D1 system using the “Wireless System
Remote” app. We recommend, however, to use a
dual-band WiFi router and deactivate its 2.4 GHz
band. If you have to operate the WiFi router in the
2.4 GHz band, ensure the maximum distance possible
between the WiFi router and your receivers in order
to avoid interference.
“Wireless System Remote” app
Q: Does an ew D1 system interfere with a
WiFi connection so that dropouts and errors
can occur during data exchange via WiFi?
A: The ew D1 system avoids frequencies that are
already allocated to other systems and automatically
uses unused frequencies so that, in general, interfer-
ence should be reduced to a minimum. If, however,
the frequency band is heavily occupied, interference
can occur in rare cases.
Q: What can I do if my Bluetooth devices do
not work when ew D1 radio links are oper-
ated in proximity?
Allgemein System
A: If your Bluetooth devices are subject to interfer-
ence, we recommend that you pair the Bluetooth
devices again after putting an ew D1 system into
operation. As a basic principle, you should keep the
distance between Bluetooth devices and the ew D1
system components as large as possible.
Q: Why does the operating time of the
transmitter vary (only applies to the -NH
country variant for the Americas)?
A: Depending on the number of source of interfer-
ence in the proximity and the length of the radio link,
the handheld or bodypack transmitter transmits us-
ing adaptive transmission power (-NH country vari-
ant only. This greatly influences the battery power
consumption.
A: Please note that the displayed remaining battery
life is the minimum battery life.
Q: Which batteries can I use?
A: You require two AA size batteries (1.5 V) per
transmitter.
A: You can use all standard alkaline or lithium pri-
mary cells.
Q: Can I also power the transmitters using
accupacks?
A: You can power the transmitters either with bat-
teries or with one of the following accupacks which
are available as accessories:
BA 10 (Cat. No.: 505972) for the
handheld transmitter
BA 30 (Cat. No.: 505974) for the
bodypack transmitter
A: You can charge the accupack via a standard USB
power supply/charger or via the USB port of a com-
puter.
A: We recommend only using original Sennheiser ac-
cupacks. Sennheiser accupacks provide a longer bat-
tery life and the remaining battery life is displayed in
hours.
A: Do not use NiMH rechargeable batteries. They
only have a voltage of 1.25 V instead of the required
1.5 V. This causes that the remaining battery life is
not displayed correctly.
General

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If more than six radio links are to be
established: When switching the devices
on and off, proceed as described in the
“Multichannel Operation” leaflet (Link)!
A: If the maximum number of radio links has already
been reached, additional radio links cannot be estab-
lished. Up to 15 radio links can be used simultane-
ously in a completely interference-free environment.
Q: Why does the status LED on my
transmitter or receiver flash red?
A: A red flashing status LED on the transmitter or
receiver indicates that the transmitter batteries/
accupack are/is low. The transmitter will switch off
within the next minutes. Replace the batteries or
recharge the accupack.
Q: What does pairing mean?
A: During pairing, the receiver and the transmitter
exchange their unambiguous identification data.
This ensures that the two devices automatically
reconnect after a restart and are, therefore, ready for
immediate use.
Q: Why does the pairing process or the
connection establishment take so long?
Your transmitters and receivers are already
factory pre-paired and will take up to 10
seconds to connect with each other. This time
can vary depending on the environment, the
number of sources of interferences and the
number of additional ew D1 radio links in use.
A: Switch off all other radio links operating in the
2.4 GHz frequency band or try to keep the distance
between potential sources of interference and the
ew D1 system components as large as possible.
Sources of interference are devices, such a WiFi rout-
ers or Bluetooth-enabled devices, that operate in the
same frequency band as the ew D1 system compo-
nents. We recommend a minimum distance of 10
meters between a WiFi router and the ew D1 system
components.
A: If possible, change the position of the transmit-
ters and receivers so that there is always a direct line
of sight between the associated transmitters and
receivers.
A: Check if the antennas are properly mounted and
screwed tight. Avoid direct contact between the indi-
vidual antennas of the receivers.
A: Certain building layouts (e.g. very large, empty
halls) and materials (metal building materials in
walls and ceilings) can also reduce the transmission
range.
General

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Q: Why is the audio of my system
disturbed?
A: The transmitters and receivers are inappropri-
ately positioned in the room. If possible, change the
position of the transmitters and receivers so that
there is always a direct line of sight between the as-
sociated transmitters and receivers.
A: The antennas are not properly mounted and
aligned. Check if the antennas are properly mounted
and screwed tight. Avoid direct contact between the
individual antennas of the receivers.
A: There are sources of interference in the proxim-
ity of the ew D1 system components. Switch off all
other radio links operating in the 2.4 GHz frequency
band or try to keep the distance between potential
sources of interference and the ew D1 system com-
ponents as large as possible. Sources of interference
are devices, such a WiFi routers or Bluetooth-enabled
devices, that operate in the same frequency band
as the ew D1 system components. We recommend
a minimum distance of 10 meters between a WiFi
router and the ew D1 system components.
A: The transmitters and receivers are inappropri-
ately positioned in the room. For safe operation,
we recommend a minimum distance of 10 meters
between sources of interference (e.g. a WiFi router)
and the ew D1 system components. Certain building
layouts (e.g. very large, empty halls) and materials
(metal building materials in walls and ceilings) can
also reduce the transmission range.
A: The audio effects are not properly adjusted.
The use of audio effects changes the sound. Make
sure that only the desired audio effects are activated
on the receiver and deactivate the audio effects if
necessary. The Effects Reset menu item allows you to
deactivate all audio effects simultaneously.
A: The receiver’s output level is not properly adjust-
ed. Check if the receiver’s output level is adjusted too
high or too low. You can use the Output Type menu
item to coarsely adjust the receiver’s output level
to match the input (mic or line) of the connected
device. You can increase or reduce the audio level
by 12 dB. Additionally, you can use the Audio Level
menu item to increase or reduce the audio level in
steps of 1 dB. You can adjust the audio level between
0 dB and 30 dB.
A: There is crosstalk due to improper cabling. Check
if you cabling is installed properly and if all cables are
fully functioning.
A: You are using outdated headset and clip-on
microphones or products from other manufacturers.
Preferably, use the headset or clip-on microphone
supplied with your ew D1 system.
A: The guitar pickups are placed to close to the
bodypack transmitter. Keep a minimum distance of
20 cm between your bodypack transmitter and the
guitar and electric bass pickups to avoid transmis-
sion interference.
If more than six radio links are to be
established: When switching the devices
on and off, proceed as described in the
“Multichannel Operation” leaflet (Link)!
Q: Why is the audio of my system
distorted?
A: The audio effects are not properly adjusted.
The use of audio effects changes the sound. Make
sure that only the desired audio effects are activated
on the receiver and deactivate the audio effects if
necessary. The Effects Reset menu item allows you to
deactivate all audio effects simultaneously.
A: The receiver’s output level is not properly
adjusted. Check if the receiver’s output level is
adjusted too high or too low. You can use the Output
Type menu item to coarsely adjust the receiver’s
output level to match the input (mic or line) of the
connected device. You can increase or reduce the
audio level by 12 dB. Additionally, you can use the
Audio Level menu item to increase or reduce the
audio level in steps of 1 dB. You can adjust the audio
level between 0 dB and 30 dB.
A: The settings of the devices in the signal chain are
not correct. Check the settings of the mixing console
and of other devices in the signal chain and correct
them if necessary,
Audio

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Q: Why does the receiver’s output level
overload the mixing console?
A: Check if the receiver’s output level is adjusted too
high or too low. You can use the Output Type menu
item to coarsely adjust the receiver’s output level
to match the input (mic or line) of the connected
device. You can increase or reduce the audio level
by 12 dB. Additionally, you can use the Audio Level
menu item to increase or reduce the audio level in
steps of 1 dB. You can adjust the audio level between
0 dB and 30 dB.
Q: Why is the receiver’s output signal too
weak at the input of the mixing console?
A: Check if the receiver’s output level is adjusted too
high or too low. You can use the Output Type menu
item to coarsely adjust the receiver’s output level
to match the input (mic or line) of the connected
device. You can increase or reduce the audio level
by 12 dB. Additionally, you can use the Audio Level
menu item to increase or reduce the audio level in
steps of 1 dB. You can adjust the audio level between
0 dB and 30 dB.
Q: Where can I adjust the input sensitivity
of the transmitter?
A: The ew D1 transmitters are equipped with
automatic sensitivity adjustment, so it is no longer
necessary to manually set the input sensitivity. The
transmitters automatically set the correct input
sensitivity.
A: Additionally, you can use the Audio Level menu
item to increase or reduce the receiver’s audio level
in steps of 1 dB. The audio level can be adjusted
between 0 dB and 30 dB.
Q: Why is there noise interference when
I connect my guitar to a bodypack
transmitter?
A: Keep a minimum distance of 20 cm between your
bodypack transmitter and the guitar and electric
bass pickups to avoid transmission interference.
Q: Which audio effect should I use when?
A: Low-cut filter: We recommend using the low-cut
filter to reduce impact noise and feedback. This filter
is suitable for both vocal and speech transmission.
A: The equalizer allows you to individually adjust the
sound to your likings.
Q: What is a de-esser?
A: A de-esser attenuates troublesome sibilance in
vocals and speech without adversely affecting the
perceived sound quality.
Q: Which microphone heads are compatible
with the ew D1 system?
A: The ew D1 system can be used with all
microphone heads of the evolution wireless series
(MMD 835, MMD 845, MME 865, MMD 935, MMD 945,
MMK 965).
A: The Sennheiser ME 90002, ME 9004 and ME 9005
microphone heads as well the the Neumann KK 204
and KK 205 microphone heads cannot be used.
Q: Why does the mute switch not function?
A: Check if the mute switch has been deactivated in
the receiver’s operating menu. If necessary, activate
the mute switch. A deactivated mute switch is indi-
cated by the following icon on the receiver display
panel:
A: With the mute switch activated, signal transmis-
sion is muted as soon as you set the transmitter’s
mute switch to the position MUTE. The status LED of
both the transmitter and the receiver light up yellow
after a short delay.
Audio

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F: How can I optimize the signal-to-noise ratio?
A: Check if the receiver’s output level is adjusted too high or too low.
Coarse adjustment: You can use the Output Type menu item to to coarsely adjust the receiver’s output level to
match the input (mic or line) of the connected device. The output level can be increased (Line 1) or reduced
(Mic 2) by 12 dB.
Audio
Fine adjustment: You can use the Audio Level menu item to to increase or reduce the receiver’s output level by
up to 30 dB in 1-dB steps. Note that the values given below are starting values only.
Guitar = 0 dB Vocals approx. 10 dB Low voice approx. 15 dB
AF Out
LINE IN
Exit
Effects Reset
Audio Level
Output Type
Low Cut
10 dB
Line
Off
Audio
Exit
Audio Level
Output Type
10 dB
Line
Audio
AF Out
MIC IN
Exit
Effects Reset
Audio Level
Output Type
Low Cut
10 dB
Mic
Off
Audio
Exit
Audio Level
Output Type
10 dB
Mic
Audio




Exit
Auto Gain Control
Effects Reset
Audio Level
Output Type
Off
10 dB
Line
Audio
0 dB 10 dB
ca. 15 dB
Use the AF bargraph as a reference. The Audio Level should be adjusted so that the bargraph does not display
full-scale deflection. With very low voices, it might be necessary to increase the level above the stated value of
15 dB.
Further individual adjustments can then be made on the mixing console. Note, however, that the increase in
level or volume is not necessarily accompanied by an increased signal-to-noise ratio.
Audio

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Q: Why does the RF signal level display
keep changing?
A: The RF signal level can fluctuate greatly depending
on the occupancy of the frequency band. The RF
signal level depends on the position, number and
strength of all radio links currently operating the
the 2.4 GHz band in proximity to the ew D1 devices.
Transmitters of the -NH country variant have
adaptive transmission power and transmit at the
requested power needed for a stable signal. All this
may cause the RF signal level display to change
erratically.
Q: Why are radio links of only a few meters
subject to signal dropouts or even link
breaks?
A: If possible, change the position of the transmit-
ters and receivers so that there is always a direct line
of sight between the associated transmitters and
receivers.
A: Check if the antennas are properly mounted and
screwed tight. Avoid direct contact between the indi-
vidual antennas of the receivers.
A: Switch off all other radio links operating in the
2.4 GHz frequency band or try to keep the distance
between potential sources of interference and the
ew D1 system components as large as possible.
Sources of interference are devices, such a WiFi
routers or Bluetooth-enabled devices, that operate
in the same frequency band as the ew D1 system
components. We recommend a minimum distance
of 10 meters between a WiFi router and the ew D1
system components.
A: Certain building layouts (e.g. very large, empty
halls) and materials (metal building materials in
walls and ceilings) can also reduce the transmission
range.
Q: Why are some radio links subject to
interference?
A: Switch off all other radio links operating in the
2.4 GHz frequency band or try to keep the distance
between potential sources of interference and the
ew D1 system components as large as possible.
Sources of interference are devices, such a WiFi
routers or Bluetooth-enabled devices, that operate
in the same frequency band as the ew D1 system
components. We recommend a minimum distance
of 10 meters between a WiFi router and the ew D1
system components.
A: Check if the antennas are properly mounted and
screwed tight. Avoid direct contact between the indi-
vidual antennas of the receivers.
A: Certain building layouts (e.g. very large, empty
halls) and materials (metal building materials in
walls and ceilings) can also reduce the transmission
range.
If more than six radio links are to be
established: When switching the devices
on and off, proceed as described in the
“Multichannel Operation” leaflet (Link)!
F: Does a signal strength/transmission
power of 100 mW help protect against
WiFi interference?
A: In general, the maximum permissible transmission
power is regulated by the relevant regulatory body
in each country.
A: If the WiFi traffic intensity is low, a higher trans-
mission power will indeed result in an increased
transmission range.
This effect, however, is significantly reduced by
multi-channel operation.
Audio
Radio

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Q: Why should I update the firmware of my
receivers or transmitters?
A: We recommend to always update all your receiv-
ers and transmitters to the latest firmware version
available in order to be able to benefit from addition-
al features or improvements on existing features.
Q: How can I update the firmware of my
receivers or transmitters?
A: You can update the firmware of the receivers
using either the “Sennheiser D1 SL Updater” PC soft-
ware or the “Wireless System Remote“ (WSR) app.
The PC software is available free of charge from the
Sennheiser website (Link). The app is available free
of charge in the Apple App Store or the Google Play
Store.
A: In order to update the firmware via the PC
software, you have to connect your receivers to
your computer network using network cable. The
“Sennheiser D1 SL Updater” PC software automati-
cally detects all receivers in the network, reads their
firmware version and offers to update the firmware
if a newer version is available.
A: In order to update the firmware via the WSR app,
you have to connect your receivers to a WiFi router
using network cable. The mobile device with the app
must be able to access the WiFi network. The app
automatically detects all receivers in the network,
reads their firmware version and offers to update the
firmware if a newer version is available.
A: Once the receiver firmware has been successfully
updated, the firmware of the associated transmitter
can be updated over the exisitng radio link with the
receiver. For this, the two devices must be paired.
If the paired transmitter runs a different firmware
version than the receiver, a dialog appears on the
receiver display panel prompting you to update the
firmware of the transmitter. Confirm the dialog to
start the update.
A: We recommend updating the firmware before us-
ing the devices. Never update the firmware during a
performance.
A: First, update the firmware of all receivers in one
step. Then, step by step, update the firmware of each
transmitter individually. Switch off all transmitters
apart from the one whose firmware you want to
update.
A: A receiver can only be used with a transmitter that
runs the same firmware version. If the two devices
are running different firmware versions, the receiver
will prompt you to update the transmitter firmware
each time you try to pair the devices.
A: Make sure to always update the firmware of
all your receivers. If a transmitter is paired with a
receiver that runs an older firmware version, the
newer firmware version of the transmitter can be
overwritten. An update is always transferred from
the receiver to the transmitter, but not vice versa.
Q: Why is the firmware update from the
receiver to the transmitter interrupted?
A: We recommend updating the firmware before us-
ing the devices. Never update the firmware during a
performance.
A: First, update the firmware of all receivers in one
step. Then, step by step, update the firmware of each
transmitter individually. Switch off all transmitters
apart from the one whose firmware you want to
update.
A: If the firmware update is interrupted, the device
restarts automatically. After the restart, the device is
ready for immediate use and maintains the previous
firmware version.
Firmware update

evolution wireless D1
Sennheiser electronic GmbH & Co. KG
Am Labor 1, 30900 Wedemark, Germany
www
04/15, A01
.sennheiser.com