AKG WMS 80 User manual

WMS 80
Wireless Microphone Systems
User Instructions

Contents Page
FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. The WMS 80 Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1. Handheld System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.2. Bodypack System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.3. Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4. SR 80 Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.1. Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.1.1. Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.1.2. Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.2. Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5. HT 80 Handheld Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.1. Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.2. Interchangeable Microphone Elements . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.3. Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6. PT 80 Bodypack Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.1. Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.2. Microphones, Guitar Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.3. Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7. Frequencies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.1. Frequency Sets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.2. Ordering Replacement Transmitters and/or Receivers. . . . . . . . . . . . . . . . 5
8. Multichannel Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
9. Setting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
9.1. Selecting Carrier Frequencies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
9.1.1. Multichannel Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
9.1.2. Changing Carrier Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . 5
9.2. HT 80 Handheld Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9.2.1. Microphone Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9.2.2. Inserting, Testing, and Removing Batteries . . . . . . . . . . . . . . . . . . 6
9.3. PT 80 Bodypack Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9.4. SR 80 Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9.4.1. Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9.4.2. Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9.4.3. Audio connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9.4.4. Connecting to Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
9.4.5. Antennas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
9.5. System Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
9.5.1. Multichannel Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
9.6. Important Hints for Reliable Operation . . . . . . . . . . . . . . . . . . . . . . . . . 7
10. Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
11. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
12. Frequency List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Please read this Manual carefully before operating the equipment.

1. Introduction
Thank you for selecting the WMS 80 wireless microphone system
from AKG. Please take the time to read through this Manual. It
contains information on how to make optimum use of your equip-
ment. Have fun!
2. Precautions
2.1.Spill no liquids on the equipment and do not drop any objects
through the ventilation slots in the equipment.
2.2.Do not place the equipment near heat sources such as radia-
tors, heating ducts, or amplifiers, etc. and do not expose it to
direct sunlight, excessive dust, moisture, rain, mechanical
vibrations, or shock.
2.3.Be sure to dispose of used batteries as required by local
waste disposal rules. Never throw batteries into a fire (risk of
explosion).
3. The WMS 80 Systems
Two different WMS 80 Systems are available:
3.1. Handheld System
1 SR 80 Receiver
1 AC power adapter for 11.7 VAC
1 RMU 80 19” rack mounting kit for 2 SR 80 receivers
1 BP 80 blank panel
1 screwdriver
1 HT 80 Handheld Transmitter
2 AA size 1.5 V dry batteries
1 SA 43 stand adapter
1 adjustable protective ring for controls
3.2. Bodypack System
1 SR 80 Receiver
1 AC power adapter for 11.7 VAC
1 RMU 80 19” rack mounting kit for 2 SR 80 receivers
1 BP 80 blank panel
1 screwdriver
1 PT 80 Bodypack Transmitter
1 belt clip
2 AA size 1.5 V dry batteries
Check that the package contains all the parts listed above for your
system. If anything is missing, please contact your AKG dealer.
3.3. Optional Accessories
CH 60/80 plastic carrying case for one complete WMS 80
system.
Color Coding Kit: Set of rings (for the HT 80) and platelets
(for SR 80 and PT 80) in various colors for identifying the indi-
vidual channels of a multichannel system.
4. SR 80 Receiver
The SR 80 is a stationary True Microcontrolled Diversity receiver
for use with WMS 80 transmitters. The SR 80 operates in a sub-
band up to 4 MHz wide of the 710 MHz to 861 MHz UHF
carrier frequency range. The SR 80 can be switched to a maxi-
mum of 15 different carrier frequencies depending on local fre-
quency allocations.
4.1. Controls
4.1.1. Front Panel
The lettering of the front panel controls is protected against scratch-
ing by a protective film. To remove the film, just peel it off.
1a POWER: Switches the power to the SR 80 ON and OFF.
1b VOLUME: The VOLUME pot matches the SR 80’s output level
to the input sensitivity of your mixer or amplifier.
1c SQUELCH: The squelch circuit switches the receiver off if the
received signal is too weak, in order to suppress the related
noise or the residual noise of the receiver while the transmitter
is off. Set the SQUELCH control to minimum before first switch-
ing the receiver on. (For details, refer to section 9.)
1d CHANNEL: This rotary switch selects the desired carrier fre-
quency or its alternative frequencies.
1e Telescoping antennas: The SR 80 is a diversity receiver and
uses two antennas in order to receive the transmitter signal at
two different spots. The diversity electronics will automatically
activate the antenna that delivers the better signal.
1f MUTE LED: Lights red if the squelch is active. In this case the
audio output will be muted. Note that the MUTE LED does
not indicate the position of the MUTE switch on the trans-
mitter!
1g RF LOW/OK LEDs: Indicate the received field strength of the
transmitter signal.
FCC Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Parts 74, 15, and 90 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equip-
ment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular instal-
lation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equip-
ment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and the receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCC regulations.
Changes or modifications not expressly approved in writing by AKG Acoustics may void the user’s authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harm-
ful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

1h AF/PEAK LEDs: Indicate the received audio level.
The green LED lighting and the red LED flashing occasionally
indicate optimum modulation.
If the LEDs do not light, the sensitivity setting on the transmitter
is too low.
The red LED lighting constantly indicates overmodulation.
1i Diversity LEDs A and B: Indicate which of the two receiving
antennas is active.
1j Color Code: If you use the receiver within a multichannel
system, you may remove the black plastic platelet and re-
place it with a colored platelet included in the optional Color
Coding Kit to identify each channel by a different color.
4.1.2. Rear Panel
1k Carrier Frequency Table: A label listing the available fre-
quencies is affixed to the bottom panel of the receiver.
1l Frequency Set Designation: The label on the bottom panel
also indicates the designation of the Frequency Set.
1m POWER: Input connector for the supplied AC adapter.
1n AUDIO OUT UNBALANCED: Unbalanced audio output on a
1/4” mono jack for connecting to, e.g., a guitar amplifier.
1o AUDIO OUT BALANCED: Balanced 3-pin XLR audio output
for connecting to, e.g., a microphone input on the mixing
console.
1p BALANCED LINE/MIC: Switches the balanced audio output
to line or microphone level. Therefore, you can connect the
SR 80 to microphone or line level inputs as desired.
1q Screwdriver for adjusting the CHANNEL and GAIN controls
on the transmitters.
4.2. Optional Accessories
Color Coding Kit
5. HT 80 Handheld Transmitter
The HT 80 handheld transmitter and matching microphone ele-
ments (optional) provide the same acoustic performance as the
equivalent hardwire microphone versions. The microphone ele-
ments available for the HT 80 have been specifically designed for
vocal use.
The HT 80 operates in a subband up to 4 MHz wide within the
710 MHz to 861 MHz UHF carrier frequency range. The HT 80
can be switched to a maximum of 15 different carrier frequencies
depending on local frequency allocations.
The transmitter uses a dipole antenna integrated in the body.
The controls can be protected against accidental misadjustment
collectively (2d) or individually with the supplied adjustable pro-
tective ring (2j).
5.1. HT 80 Controls
2a PWR: Switches the transmitter power ON (“I”) and OFF (“0”).
2b Status LED: Indicates battery status and audio input overload.
LED glowing dimly: batteries are OK.
LED constantly lighting brightly: batteries will be dead in
about 90 minutes.
LED illuminating brightly: audio input is overloaded.
2c MIC: Mutes the audio signal (position “0”) while power and
carrier frequency remain ON. Thus, no noise will become
audible if you mute the microphone, even if the SQUELCH
control (1c) on the receiver is set to minimum.
2d Color Code: If you use the transmitter in a multichannel system
you can remove the black plastic ring and replace it with a
colored ring from the optional Color Coding kit to identify
each wireless channel by a different color.
2e GAIN: This rotary pot allows you to match the microphone
level to the transmitter’s audio section.
2f Battery Compartment: Refer to Section 9. Setting Up.
2g CHANNEL: This rotary switch selects the desired carrier fre-
quency (depending on local allocations) or switches between
the carrier frequency and its alternative frequencies.
Important: Prior to selecting frequencies, switch the transmitter
OFF.
2h Carrier Frequency Table: A label listing the available fre-
quencies is affixed to the battery compartment.
2i Frequency Set Designation: The label inside the battery com-
partment also indicates the designation of the Frequency Set.
2j Adjustable protective ring: Protects the controls from being
misadjusted accidentally.
5.2. Interchangeable Microphone Elements
The interchangeable microphone elements (2k) D 880 WL1,
D 3700 WL1, D 3800 WL1, C 5900 WL1, and C 535 WL1
are acoustically and mechanically identical to the equivalent hard-
wire versions. They feature the same transducer capsules and
mechanical construction.
Extremely high gain before feedback, optimum handling noise
rejection, ultimate protection from damage, and an integrated
wind and pop screen are only the most impressive features of
these microphones. For more details, refer to the respective AKG
brochures.
5.3. Optional Accessories
W 880 foam windscreen for D 880 WL1
W 3001 foam windscreen for D 3700 WL1 and
C 5900 WL1
W 23 foam windscreen for C 535 WL1
Color Coding Kit
6. PT 80 Bodypack Transmitter
You can use the PT 80 bodypack transmitter with both dynamic
microphones and condenser microphones operating on a supply
voltage of approx. 7 V. You may also connect an electric guitar,
electric bass, or remote keyboard.
The PT 80 operates in a subband up to 4 MHz wide of the
710 MHz to 861 MHz UHF carrier frequency range. The HT 80
can be switched to a maximum of 15 different carrier frequencies
depending on local frequency allocations.
6.1. Controls
3a POWER: Switches the transmitter power ON (“I”) and OFF
(“0”).
3b MIC: Mutes the audio signal (position “0”) while power and
carrier frequency remain ON. Thus, no noise will become
audible if you mute the microphone even if the SQUELCH
control (1c) on the receiver is set to minimum.
3c Status LED: Indicates battery status and audio input overload.
LED glowing dimly: batteries are OK.
LED constantly lighting brightly: batteries will be dead in
about 90 minutes.
LED illuminating brightly: audio input is overloaded.
3d Audio Input: 3-pin mini XLR connector with both mic and line
level pins that automatically match the connector pinout of the
microphone or optional MKG/L guitar cable.
3e Color Code: If you use the transmitter within a multichannel
system, you may remove the black plastic platelet and re-
place it with a colored platelet included in the optional Color
Coding Kit to identify each channel by a different color.

3f CHANNEL: This rotary switch selects the desired carrier fre-
quency.
3g Belt Clip for fixing the transmitter to your belt.
3h Battery Compartment: Refer to Section 9. Setting Up.
3i Antenna: Permanently connected, flexible antenna.
3j GAIN: This rotary pot allows you to match the microphone or
instrument level to the transmitter’s audio section.
3k Carrier Frequency Table: A label listing the available fre-
quencies is affixed to the transmitter rear panel.
3l Frequency Set Designation: The label on the rear panel also
indicates the designation of the Frequency Set.
3m Security Cover: Protects the POWER and MIC switches from
being actuated unintentionally.
6.2. Microphones, Guitar Cable (optional)
The following AKG microphones have been designed specifically
for direct connection to the audio input of the PT 80:
C 417 L
C 419 L
C 420 L
CK 77 L
The MKG/L guitar cable from AKG lets you connect an electric
guitar, electric bass, or remote keyboard to the bodypack trans-
mitter.
6.3. Optional Accessories
CB 60/80 bag
Color Coding Kit
7. Frequencies
The transmitter and receiver of your WMS 80 system have been
factory programmed for up to 15 selectable carrier frequencies.
The carrier frequency label (1k) on the receiver, (2g) on the hand-
held transmitter, or (3k) on the bodypack transmitter lists the
Frequency Set your WMS 80 system uses and all available carrier
frequencies.
7.1. Frequency Sets
Prior to powering up your WMS 80 system, check that the trans-
mitter and receiver use the same Frequency Set. If they do not, you
may not be able to find a common carrier frequency for the trans-
mitter and receiver.
The following Frequency Sets are currently available:
Designation Frequency Countries
Range (MHz)
EU58 770,6 - 773,4 EU
EU59 777,6 - 780,4 EU
EU60 785,6 - 788,4 EU
JPA 802,5 - 805,5 EU, Japan
NZ1 812,2 - 815,0 EU, New Zealand
NZ2 833,2 - 835,0 EU, New Zealand
UK69A 854,9 - 857,625 EU, Great Britain
UK69B 858,2 - 860,9 EU, Great Britain
US54 710,2 - 713,0 USA
US55 719,0 - 721,8 USA
US58 734,4 - 737,2 USA
US59 742,8 - 745,6 USA
For frequencies allocated in the various countries and frequencies
suited for intermodulation-free simultaneous operation, refer to the
Frequency List in section 12.
7.2. Ordering Transmitters and Receivers
If you want to order additional transmitters or receivers operating
on the same set of frequencies as your original equipment, be sure
to state the designation of your original Frequency Set (1k/1l, 2i,
3k/3l) and the serial number of the original device. We need this
information to make sure your new equipment will be compatible
with the original units.
8. Multichannel Systems
Carrier frequencies allocated to wireless microphones differ from
country to country. Depending on local frequency allocations and
available carrier frequencies you can operate two to four
WMS 80 systems simultaneously. (Refer to the Frequency List in
section 12.)
In each carrier frequency table (1k, 2h, 3k) and in the Frequency
List in section 12, the basic frequencies you can use simulta-
neously and without risk of intermodulation are marked with *.
If you have any questions regarding allocated frequencies contact
your dealer, the competent authority, your AKG representative, or
the AKG head office in Vienna, Austria.
Alternatively, you are welcome to visit the AKG website at
www.akg-acoustics.com where you can download a FREE fre-
quency management program for AKG Wireless Microphone
Systems.
9. Setting Up
Prior to connecting the receiver to AC power and inserting the bat-
teries into the transmitter, set the transmitter and receiver to the
same carrier frequency. The carrier frequency tables on the trans-
mitter (2h, 3k) and receiver (1k) and the Frequency List (section 12)
on page 44 list the channel number corresponding to each carri-
er frequency.
9.1. Selecting the Carrier Frequency
1. Handheld transmitter: Unscrew the battery compartment
cover and the color code ring (2d or 2j) CCW.
Bodypack transmitter: Open the battery compartment
(3h).
All controls are now accessible.
2. Use the supplied screwdriver (1q) to set the CHANNEL control
(2g) on the handheld transmitter or (3f) on the bodypack trans-
mitter to the desired channel.
3. Set the CHANNEL control (1d) on the receiver to the same
channel as the transmitter.
9.1.1. Multichannel Systems
1. Be sure to assign a separate carrier frequency to each trans-
mission channel (transmitter + receiver).
2. Set the transmitter and receiver to one of the frequencies mark-
ed with * in the carrier frequency tables (1k, 2h, 3k).
Note: If reception on the selected carrier frequency is disturbed,
set the carrier frequencies for all WMS 80 channels
within the same frequency set up or down one step
with the respective CHANNEL controls (1d, 2g, 3f) on each
transmitter and receiver.
This is necessary to provide the minimum frequency spacing
required for intermodulation-free multichannel operation.
Important: Do not operate two or more WMS 80 channels on
the same frequency at the same time and location. This would
cause unwanted noise due to radio interference.
9.1.2. Changing Carrier Frequencies
Prior to changing a carrier frequency,be sure to switch the

transmitter OFF. To activate the new carrier frequency, switch
the transmitter back ON. (If you try to change the carrier frequen-
cy while power to the transmitter is on, the frequency will remain
the same.)
9.2. HT 80 Handheld Transmitter
9.2.1. Microphone Element
Prior to switching the transmitter on, screw the microphone element
CW onto the thread on the transmitter. All electrical connections
will be made automatically.
9.2.2. Inserting, Testing, and Removing Batteries
1. Make sure that the end of the ribbon fixed inside the battery
compartment (2f) will stick out of the battery compartment (2f).
(The ribbon is needed for removing the batteries.)
2. Push the upper end of each of the supplied batteries beneath
the fixing flange in the battery compartment (2f) from the side
and press firmly down against the battery compartment bottom.
Check that the batteries align with the polarity marks.
The transmitter will not function with the batteries inserted in-
correctly
Important: Do not try to insert the batteries straight or with the
lower end first. You would risk breaking the fixing flange so the
battery would not be seated securely in the battery compartment.
3. Set the PWR switch to “I” to switch the power to the transmitter
on.
The status LED (2b) will flash momentarily. If the batteries are in
good condition, the status LED (2b) will continue glowing dimly.
When the status LED (2b) illuminates brightly the batteries will
be dead within about 90 minutes. Replace the batteries with
new ones as soon as possible.
If the status LED (2b) fails to illuminate the batteries are dead.
Insert new batteries.
4. Screw the supplied protective ring (2j) and the battery com-
partment cover back onto the transmitter CW. You can rotate
the protective ring (2j) so that any one of the controls will be
accessible and all others covered (B to E) and thus protected
from being misadjusted unintentionally.
Note: For easy channel identification in a multichannel setup, you
can install a different-color protective ring included in the
optional Color Coding Kit. These protective rings are adjust-
able, too.
Note: If you prefer to cover all controls, reinstall the original color
code ring (2d) after adjusting the system as described
in section 9.5.
5. Removing batteries: Pull the ribbon outward to release the
batteries from the battery compartment (2f) and remove the bat-
teries.
9.3. PT 80 Bodypack Transmitter
1. Insert the supplied batteries into the battery compartment (3h)
conforming to the polarity marks.
The transmitter will not function with incorrectly inserted bat-
teries.
2. Close the battery compartment (3h). The GAIN control (3j)
remains accessible through an opening in the battery compart-
ment cover.
3. Connect your microphone -- or your instrument using an option-
al MKG/L guitar cable -- to the audio input (3d).
4. Rotate the security cover (3m) CW to uncover the switches.
5. Set the POWER switch (3a) to “I” to switch the power to the
transmitter on.
The status LED (3c) will flash momentarily. If the batteries are in
good condition, the status LED (3c) will continue glowing dimly.
When the status LED (3c) illuminates brightly the batteries will
be dead within about 90 minutes. Replace the batteries with
new ones as soon as possible.
If the status LED (3c) fails to illuminate the batteries are dead.
Insert new batteries.
6. Snap the security cover (3m) back over the switches CCW.
You can wear the transmitter inside a shirt or jacket pocket, fix
it to your belt with the belt clip (3g), or attach it to your body
with adhesive bandage.
Important: Make sure the antenna will hang down freely, with-
out being covered by the body.
Note: For easy channel identification in a multichannel setup, you
can replace the snap fitted color code platelet (3e) with a dif-
ferent-color platelet included in the optional Color Coding Kit.
9.4. SR 80 Receiver
9.4.1. Placement
Reflections off metal parts, walls, ceilings, etc. or the shadow
effects of musicians and other people may weaken or cancel the
direct transmitter signal.
For best results, place the receiver as follows:
1. Place the receiver near the performance area (stage). Make
sure, though, that the transmitter will never get any closer to the
receiver than 16 ft. (5 m).
2. There should always be a direct line of sight between the trans-
mitter and receiver.
3. Place the receiver at least 5 ft. (1.5 m) away from any big
metal objects, wire (particularly wire mesh) or sheet metal struc-
tures, walls, scaffolding, ceilings, etc.
4. Do not place the receiver in a recess in a wall.
5. Place the receiver at least 5 ft. (1.5 m) away from any equip-
ment that may emit RF radiation such as lighting racks, fluores-
cent lamps, digital effects units, or PCs.
You can either use the receiver free-standing or mount it in a 19”
rack using the supplied RMU 80 rack mounting kit.
9.4.2. Rack Mounting
1. Slide a rack ear into the fixing rail on one side of the receiver
and the BP 80 blank panel into the fixing rail on the other side
from rear to front.
2. To mount two receivers, slide the linking section with the cover
plate pointing to the receiver front panel into the fixing rail on
one side of the receiver from rear to front. Slide the linking sec-
tion into the fixing rail on one side of the second receiver from
the rear. Slide another rack ear into the fixing rail on the other
side of the second receiver.
3. Use the supplied installation screws to fix the rack ears to the
rack. For best reception, we recommend to mount the receiv-
er(s) at the top level of the rack.
9.4.3. Audio Connection
Connect one of the AUDIO OUT sockets to the desired input:
-BALANCED socket (1o) - XLR cable - microphone input: set
BALANCED LINE/MIC switch (1p) to MIC.
- BALANCED socket (1o) - XLR cable - line input: set BALANCED
LINE/MIC switch (1p) to LINE.
-UNBALANCED jack (1n) - 1/4” jack cable - unbalanced 1/4”
microphone or line input jack. (BALANCED LINE/MIC switch
(1p) position is uncritical.)
Important: Never use the two AUDIO OUT sockets simulta-
neously! This may cause signal loss or increased noise.

9.4.4. Connecting to Power
1. Unfold the two antennas (1e) and extend them fully to obtain
optimum reception.
2. Set the SQUELCH control (1c) fully CCW.
3. Check that the AC mains voltage stated on the sup-
plied AC adapter is identical to the AC mains volt-
age available where you will use your WMS 80.
Using the AC adapter with a different AC voltage may cause
irreparable damage to the unit.
4. Plug the feeder cable on the supplied AC adapter into the
POWER socket (1m) on the receiver.
5. Bend part of the feeder cable into a bight, pass the bight
through the opening in the lower part of the screwdriver sup-
port, and place the end of the bight snugly against the strain
relief hook above the POWER socket (1m).
6. Plug the power cable on the supplied AC adapter into a con-
venient power outlet.
7. Switch the receiver ON with the POWER switch (1a).
Note: For easy channel identification in a multichannel setup, you
can replace the snap fitted color code platelet (1j) with a dif-
ferent-color platelet included in the optional Color Coding Kit.
9.4.5. Antennas
For optimum reception, make sure to extend the two telescoping
antennas (1e) exactly as far as specified for each Frequency Set
in Table 1 on page 39.
9.5. System Adjustments
1. Handheld transmitter: Using the supplied screwdriver
(1q), set the GAIN control (2e) so that on the receiver the green
AF LED (1h) will light constantly and the red PEAK LED (1h) on
the receiver and the status LED (2b) on the transmitter will only
flash on the loudest signal peaks.
Bodypack transmitter: Using the supplied screwdriver
(1q), set the GAIN control (3j) so that the green AF LED (1h) on
the receiver will light constantly and the status LED (3c) on the
transmitter as well as the red PEAK LED (1h) on the receiver will
only flash on the loudest signal peaks.
2. The red PEAK LED (1h) on the receiver and/or the status LED
(2b, 3c) on the transmitter lighting brightly means the transmit-
ter is overloaded. Turn the GAIN control (2e) or (3j) on the
transmitter CCW to the point that the PEAK (1h) and status (3c)
LEDs will only flash occasionally.
3. Set the VOLUME control (1b) on the receiver so that the receiv-
er output will optimally drive the connected device (e.g., mixer
input). Refer to the instruction manual for the connected device.
4. Check the performance area for "dead spots", i.e., places where
the field strength seems to drop and reception deteriorates.
If you find any dead spots, try to eliminate them by reposition-
ing the receiver. If this does not help, avoid the dead spots.
5. If unwanted noise becomes audible, turn the SQUELCH control
(1c) CW just enough to suppress the noise.
The MUTE LED (1f) will light every time the squelch mutes the
audio output of the receiver.
Important: Never set the squelch threshold higher than abso-
lutely necessary. The higher the squelch threshold, the lower the
sensitivity of the receiver and thus the usable range between
transmitter and receiver.
6. Check the field strength of the received signal. If the RF LOW
LED (1g) lights, reposition the receiver and/or transmitter such
that field strength will increase back to optimum (OK LED (1g)
illuminating).
7. The MUTE LED (1f) on the receiver illuminating means that the
squelch is active.
Remedies: Switch the transmitter ON, move closer to the receiv-
er, or turn the SQUELCH control (1c) CCW to the point that the
MUTE LED (1f) will extinguish.
9.5.1. Multichannel Systems
If reception on the selected carrier frequency is disturbed, set the
carrier frequencies for all WMS 80 channels within
the same frequency set up or down one step with the
respective CHANNEL controls (1d, 2g, 3f) on each transmitter
and receiver.
This is necessary to provide the minimum frequency spacing re-
quired for intermodulation-free multichannel operation.
Important: Prior to changing a carrier frequency,be sure to
switch the transmitter OFF.To activate the new carrier
frequency, switch the transmitter back ON. (If you try to change
the carrier frequency while power to the transmitter is on, the
frequency will remain the same.)
9.6. Important Hints for Reliable Operation
The propagation of RF radiation is subject to certain physical laws
that you need to take into account in order to obtain trouble-free
performance from any wireless microphone system. Here are a
few useful hints on how to avoid problems such as sudden noise
surges, phasiness (whizzing, whirring), dropouts, or clicks:
1. In a multichannel system, always leave power to all transmitters
on. To cut the transmitter signal, use the MUTE switch only.
2. Keep a minimum transmitter to receiver distance of 16 ft. (5 m).
3. Make sure the transmitter will never be farther away from the
receiver than 164 ft. (50 m).
4. Make sure there is a direct line of sight between the transmitter
and receiver.
5. Keep any two transmitters at least 40 inches (1 m) apart.
If this is impractical (for instance, during ”love duets”), check
prior to the performance what frequencies will work best at
close quarters.
6. Make sure the antenna of the bodypack transmitter will hang
down freely throughout the performance and will not touch the
user’s skin. The human body attenuates RF signals.
7. Do not place the receiver in a recess in a wall or near sheet
metal or wire structures. Wire mesh is a particularly efficient
absorber of RF energy.
8. Do not align antennas parallel to metal surfaces.
9. Avoid lighting racks and fluorescent lamps. Dimmers and
ballast circuits emit RF radiation.
10.Avoid digital effects units and PCs. They, too emit RF radiation.
10. Cleaning
To clean the transmitter and receiver surfaces, use a soft cloth
moistened with methylated spirits or alcohol.

HT 80 PT 80 SR 80
Carrier frequency 710.2 to 860.9 MHz
Modulation FM
Audio bandwidth 50 to 20,000 Hz
Frequency stability (-10°C to +50°C) ±10 ppm
Rated deviation 30 kHz (US1a, US1b: 7.5 kHz)
T.H.D. at 1 kHz <0.5% <0.4%
Compander Yes
Signal/noise ratio typ. 50 dB(A) >100 dB(A)
Limiter Yes
RF output 10 mW
Current consumption typ. 130 mA 145 mA 200 mA
Power requirement 2x1.5 V AA size batteries 120/230 V AC, 50/60 Hz
Battery life >12 hours >10 hours
Input sensitivity typ. -95 dBm
Audio input level for rated deviation 350 mV/1 kHz 1400 mV/1 kHz
Input impedance 220 kΩ
Condenser microphone power supply 6 V/6,8 kΩon pin 3
Squelch threshold -95 to -80 dBm
Audio output balanced XLR: switchable be
tween microphone and line
levels; typ. 30 dB
unbalanced XLR: 6 dBm
unbalanced 1/4” jack: 0 dBm
Size (WxDxH) 240 x 36 dia. mm 92 x 65 x 20 mm 210 x 170 x 42 mm
(9.4 x 1.4 in.) (3.6 x 2.6 x 0.8 in.) (8.3 x 6.7 x 1.7 in.)
Net weight 245 g (8.7 oz.) 76 g (2.7 oz.) 470 g (16.6 oz.)
11. Specifications
This product conforms to ETS 300.422 and ETS 300.445 as well as Parts 15 (receiver), 74, and 90 (traveler) of the FCC Rules.

12. Frequenzliste - Frequency List - Liste des fréquences - Lista delle frequenze -
Lista de frecuencias - Lista de freqüências
Set: JPA (Japan Spot)
CHANNEL FREQ.
0 OFF
1 802.500MHz*
2 803.000MHz*
3 804.000MHz
4 804.875MHz*
5 805.500MHz*
6 805.500MHz
7 805.500MHz
8 805.500MHz
9 805.500MHz
A 805.500MHz
B 805.500MHz
C 805.500MHz
D 805.500MHz
E 805.500MHz
F 805.500MHz
Set: UK69A (UKSpot)
CHANNEL FREQ.
0 OFF
1 854.900MHz*
2 855.275MHz*
3 856.175MHz*
4 857.625MHz*
5 857.625MHz
6 857.625MHz
7 857.625MHz
8 857.625MHz
9 857.625MHz
A 857.625MHz
B 857.625MHz
C 857.625MHz
D 857.625MHz
E 857.625MHz
F 857.625MHz
Set: UK69B (UKSpot)
CHANNEL FREQ.
0 OFF
1 858.200MHz*
2 860.400MHz*
3 860.900MHz*
4 860.900MHz
5 860.900MHz
6 860.900MHz
7 860.900MHz
8 860.900MHz
9 860.900MHz
A 860.900MHz
B 860.900MHz
C 860.900MHz
D 860.900MHz
E 860.900MHz
F 860.900MHz
Set: US54
CHANNEL FREQ.
0 OFF
1 710.200MHz
2 710.400MHz*
3 710.600MHz
4 710.800MHz
5 711.000MHz*
6 711.200MHz
7 711.400MHz
8 711.600MHz
9 711.800MHz*
A 712.000MHz
B 712.200MHz
C 712.400MHz
D 712.600MHz
E 712.800MHz*
F 713.000MHz
Set: US55
CHANNEL FREQ.
0 OFF
1 719.000MHz
2 719.200MHz
3 719.400MHz
4 719.600MHz
5 719.800MHz*
6 720.000MHz
7 720.200MHz
8 720.400MHz
9 720.600MHz*
A 720.800MHz
B 721.000MHz
C 721.200MHz
D 721.400MHz
E 721.600MHz*
F 721.800MHz
Set: US58
CHANNEL FREQ.
0 OFF
1 734.400MHz
2 734.600MHz*
3 734.800MHz
4 735.000MHz
5 735.200MHz
6 735.400MHz
7 735.600MHz
8 735.800MHz
9 736.000MHz*
A 736.200MHz
B 736.400MHz
C 736.600MHz
D 736.800MHz
E 737.000MHz*
F 737.200MHz
Set: US59
CHANNEL FREQ.
0 OFF
1 742.800MHz
2 743.000MHz*
3 743.200MHz
4 743.400MHz
5 743.600MHz*
6 743.800MHz
7 744.000MHz
8 744.200MHz
9 744.400MHz*
A 744.600MHz
B 744.800MHz
C 745.000MHz
D 745.200MHz
E 745.400MHz*
F 745.600MHz
Set: EU58
CHANNEL FREQ.
0 OFF
1 770.600MHz
2 770.800MHz*
3 771.000MHz
4 771.200MHz
5 771.400MHz*
6 771.600MHz
7 771.800MHz
8 772.000MHz
9 772.200MHz*
A 772.400MHz
B 772.600MHz
C 772.800MHz
D 773.000MHz
E 773.200MHz*
F 773.400MHz
Set: EU59
CHANNEL FREQ.
0 OFF
1 777.600MHz
2 777.800MHz*
3 778.000MHz
4 778.200MHz
5 778.400MHz*
6 778.600MHz
7 778.800MHz
8 779.000MHz
9 779.200MHz*
A 779.400MHz
B 779.600MHz
C 779.800MHz
D 780.000MHz
E 780.200MHz*
F 780.400MHz

Set: EU60
CHANNEL FREQ.
0 OFF
1 785.600MHz
2 785.800MHz*
3 786.000MHz
4 786.200MHz
5 786.400MHz*
6 786.600MHz
7 786.800MHz
8 787.000MHz
9 787.200MHz*
A 787.400MHz
B 787.600MHz
C 787.800MHz
D 788.000MHz
E 788.200MHz*
F 788.400MHz
Set: NZ1
CHANNEL FREQ.
0 OFF
1 812.200MHz
2 812.400MHz*
3 812.600MHz
4 812.800MHz
5 813.000MHz*
6 813.200MHz
7 813.400MHz
8 813.600MHz
9 813.800MHz*
A 814.000MHz
B 814.200MHz
C 814.400MHz
D 814.600MHz
E 814.800MHz*
F 815.000MHz
Set: NZ2
CHANNEL FREQ.
0 OFF
1 833.200MHz
2 833.400MHz*
3 833.600MHz
4 833.800MHz
5 834.000MHz*
6 834.200MHz
7 834.400MHz
8 834.600MHz
9 834.800MHz*
A 835.000MHz
B 835.200MHz
C 835.400MHz
D 835.600MHz
E 835.800MHz*
F 836.000MHz

WMS 80
Wireless Microphone System
HT 80
1a 1b 1c 1g
1o
1h
1n 1p 1m
1i
1j
1d
1q
1e 1e
1f
1k/1l
2d/2j
HT80 HT80
HT80
HT80 HT80
SR80 0000Z0000
SNR:01001 AKG Set:EUS..
1:000.000 9:000.000 MHz
2:000.000 10:000.000 MHz
3:000.000 11:000.000 MHz
4:000.000 12:000.000 MHz
5:000.000 13:000.000 MHz
6:000.000 14:000.000 MHz
7:000.000 15:000.000 MHz
8:000.000
B CA
ED

HT 80
HT80
/2j
2a 2c2b
2e
2h/2i
2f
2g
2k
2 x 1.5V
HT80
HT80
+
–

PT80 0000Z0000
SNR:01001 AKG Set:EUS..
1:000.000 9:000.000 MHz
2:000.000 10:000.000 MHz
3:000.000 11:000.000 MHz
4:000.000 12:000.000 MHz
5:000.000 13:000.000 MHz
6:000.000 14:000.000 MHz
7:000.000 15:000.000 MHz
8:000.000
3k/3l
3g
3g
3m
3m
III
IVIII
2 x 1.5V
3g
3j
3f
3h