Akg WMS 450 Schematic , Part List
WMS 450
Multichannel System
Schematic & Part List
1-12 Channel
MCS0802001
Wolfgang Fritz / Feb. 2008
1
Introduction
The following schematics will help you to easily set up multi channel systems.
Please use the equipment that is specified in the schematics only.
For your convenience and understanding, we’ve added technical information and part lists.
You can use this part lists when ordering the system you require! If you need any help
regarding the frequency regulations or if your particular situation doesn’t allow for a standard
system to be installed, please do not hesitate to contact us under support@akg.com.
All the WMS450 Systems in this document are designed with active antennas that can
used in all venues with a 20m RG58 antenna cable.
SRA2 B/W active directional antenna
For Venues (tour sound &installs) that cover large distances (up to 150m, 500 ft) like
music halls, stadiums and other open air applications.
RA4000 B/W active omni-directional antenna
For Venues without a designated transmitter area and up to 100m/330 ft free line of
sight. Ideal for conference rooms, multi purpose halls, houses of worship etc.
MCS0802001
Wolfgang Fritz / Feb. 2008
2
Content
General InformationPage
Receiver/Antenna Placement
Squelch
Intermodulation
Cable Attenuation
PS4000 dip switch
AB4000 dip switch
PS4000 dip Switch Matrix
Required Component Matrix
Glossar
WMS SystemAntenna TypePage
1Channel
Channel1
2Channel no PS4000
2Channel no PS4000
2
2ChannelRA4000 B/W
Channel no PSU4000
4
Channel no PSU4000RA4000 B/W
4
Channel
4
Channel
5
Channel
5
Channel
6Channel
6ChannelRA4000 B/W
8ChannelSRA2 B/W
8ChannelRA4000 B/W
Channel9
9Channel
10Channel
10Channel
1212Channel
Channel
SRA2 B/W
RA4000 B/W
SRA2 B/W
RA4000 B/W
SRA2 B/WChannel
SRA2 B/W4
SRA2 B/W
RA4000 B/W
SRA2 B/W
RA4000 B/W
SRA2 B/W
SRA2 B/W
RA4000 B/W
SRA2 B/W
RA4000 B/W
SRA2 B/W
RA4000 B/W
Information4
Information4
Information4
Information5
Information5
Information5
Information6
Information7
Information8
Schematic / Part List
Schematic / Part List
Schematic / Part List
Schematic / Part List
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Schematic / Part List
Schematic / Part List
Schematic / Part List
Schematic / Part List
Schematic / Part List
Schematic / Part List
Schematic / Part List
Schematic / Part List
Schematic / Part List
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Schematic / Part List
Schematic / Part List
Schematic / Part List
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9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
MCS0802001
Wolfgang Fritz / Feb. 2008
3
Technical Information
Wireless Basics
Every wireless microphone system has to operate on one specific frequency
Transmitter and receiver of a system need to work on the same frequency
Two transmitters cannot be used with one receiver at the same time
Receiver/Antenna Placement
Direct line of sight between transmitter and receiver antenna
Place the receiver/antennas at least 5 ft. (1.5 m) away from all transmitters
Place the receiver antennas at least 5 ft. (1.5 m) away from any big metal object,
wire(particularly wire mesh) or sheet metal structures, walls, ceilings, etc.
Do not place the antennas in hidden places (behind walls)
Place the receiver at least 5 ft. (1.5 m) away from any equipment that may emit RF
radiation such as lighting racks, fluorescent lamps, digital effect units, or PCs
Squelch
Standard: Carrier squelch, manual
– Operates strictly on the signal strength of the signal.
– If received signal strength drops under the adjustable squelch threshold the
audio output is muted
Advanced: Tone Code (only WMS4000)
– The audio turns on only in the presence of the correct tone code and an
adequate signal strength (-100dbm)
– Lock out all signals except ones with the correct key.
Intermodulation
Intermodulation is the result of two or more signals of different frequencies being
mixed together, forming additional signals that are not harmonic frequencies of
either.
By using more than one transmitter simultaneously at the same location,intermodulation
happens in the receiver and/or transmitter. In your case this intermodulation products
are generated in the bandwidth that you are using.
To avoid intermodulating frequencies, we offer you pre-calculated frequencies as presets in
the SR450 and SR4000 Receiver. Please, make sure that when setting up a multi channel
system, all your receivers are set to the same country preset (NAME) and group. Use the
Automatic channel function (auto setup) to scan for free frequencies at your venue.
MCS0802001
Wolfgang Fritz / Feb. 2008
4
Cable Attenuation
To obtain the best sound possible, you need to have the right RF input level throughout
your signal chain. Premium quality wireless systems like the WMS450 and WMS4000,
offer you adjustable RF-level settings that garantee to maximise operating distance even
when using different cable lenghts and different types of cable! For this purpose, AKG’s
PS4000W antenna splitter, has 3 dip switches that you’ll find on the right side of it’s
front panel, behind the AKG logo.
RG58 Cable Attenuation (MKPS, MKA5, MKA20 antenna cable)
PS4000 dip switch
This dip switch reduce the input RF level of the PS4000 between 0 dB and 14 dB.
All antenna output level and the cascade(link) output level have an effect on this reduction.
PS4000W – Power Splitter
Rear View
Antenna A cascade output
Antenna A input
(DC power)
4x Antenna A output
(DC power)
Ant. B
Signal level adjustment
Attenuation
dip switches behind AKG Logo
AB4000 dip switch
The AB4000 has a fix 17.5dB amplifier in the output stage. The dip switch reduce the
input RF level of the AB4000 between 0 dB and -14 dB. AB4000 get the DC power
through the antenna cable from the PS4000 or an ASU4000 unit.
AB4000 – Antenna Booster
Internal
Attenuation
Total Gain
3.5 dB
5.5 dB
7.5 dB
9.5 dB
11.5 dB
13.5 dB
15.5 dB
17.5 dB
Signal level adjustment
MCS0802001
Wolfgang Fritz / Feb. 2008
5
PS4000 dip switch matrix (RG58 cable)
Passiv Antennas Active Antennas
Antenna type
&
Gain
Cable type
&
Length
¼ wave
UHF Antenna
0 dB
RA4000 WSRA2 W RA4000 BWSRA2 BW
1 dB4-6 dB18 dB22-24 dB
0110E0189
1m / 3ft
MKA 5
5m / 16ft
MKA 20
20m / 66ft
MKA 5 + MKA 20
25m / 82ft
2x MKA 20
40m / 132ft
3x MKA 20
60m / 198ft
Antenna Booster
AB4000
necessary !
0 dB
0 dB
0 dB
0 dB -2 dB -14 dB
-4 dB
-8 dB -12 dB
-6 dB -10 dB
0 dB -2 dB
RA4000 BW
2x MKA 20
AB4000
0 dB
1x MKA 20
PS4000
-4 dB
SRA2 BW
2x MKA 20
AB4000
0 dB
1x MKA 20
PS4000
-8 dB
RA4000 BW
2x MKA 20
SRA2 BW
2x MKA 20
4x MKA 20
80m / 264ft
Antenna Booster
AB4000
necessary !
AB4000
0 dB
2x MKA 20
PS4000
0 dB
AB4000
0 dB
2x MKA 20
PS4000
0 dB
You have to use this PS4000 dip switch settings at all PS4000 with direct connection
to the antennas.
All cascade PS4000 have the same dip switch setting ON/ON/ON (0dB)
MCS0802001
Wolfgang Fritz / Feb. 2008
6
WMS450/4000 Component Matrix
Number of …
Standard Power Supply
! only available in US !
Power Supply
WMS
Receiver
21040+31+01
31060+41+01
41081+01+01
510101+01+11
620141+02+01
720161+02+01
820181+02+01
920201+02+12
1030241+03+02
1130261+03+02
1230281+03+02
1330301+13+12
1442362+04+02
1542382+04+02
1642402+04+02
1742422+04+13
1842442+04+23
1952522+05+03
2052542+05+03
2152562+05+13
2252582+05+23
2362622+06+03
2462642+06+03
2562662+16+14
2662682+26+24
3290803+09+04
3690883+49+45
481301205+013+06
521301285+213+46
PS4000ZAPD-21MKPSPSU4000
AC12 Power
SupplyPSU01/4000
AC12 Power
SupplyHUB4000Q
Additional you will need min. 2x antennas and 2x MKAxx antenna cables!
Please, look at the "PS4000 dip switch matrix (RG58)" to find your antenna components.
PSU01/4000 is a 12V/2A Power Supply Adapter (1x PSU4000 = 3x PSU01/4000)
MCS0802001
Wolfgang Fritz / Feb. 2008
7
~90-230V
ANT A IN
ANT B IN
SR4000
DC IN (12V/0.5A)
LOGIC OUT
XLR
¼“ TS
AUDIO OUT
AUDIO OUT
▼
Mixer
ANT A INANT B IN
PS4000W
CASCADE B
DC IN (12V/0.5A)
CASCADE A
1A1B2A2B3A3B4B
PSU4000
DC OUT 1 (2.5A)
DC OUT 2 (2A)
AC POWER
DC OUT 3 (2A)
Glossar
DATA
SR4000 – WMS4000 Stationary Receiver
PS4000W – Power Splitter 1:4 (Distribute RF signal and DC Power)
4A
● Splits 1 antenna to 4 receiver
● Antenna cascade(Link) output to send RF-Signal to next PS4000.
Cascade max. 3 PS4000.
If you need more than 12 channels use an ZAPD in front of the first PS4000.
PSU4000 – Power Supply Unit with 3x 12 volt outputs (2.5A and 2A)
Cable
SRA2 B/W
ANT OUT
RA4000 B/W
ANT OUT
SR3
SR4
SR6
SR8
SR7
SR5
HPA4000
DC IN (12V/0.5A)Headphone
CU4000
DC IN (12V/1.4A)
ZAPD-21
ASB
ANT IN
ASU4000
DC IN (12V/0.5A)
ANT OUT
ANT IN
AB4000
ANT OUT
DEV3
DEV4
DEV6
DEV8
DEV7
DEV5
HUB4000Q
DC IN (12V/0.5A)ETHERNET
SRA2 B/W – Active Directional Antenna (21dB Gain)
RA4000 B/W – Active Omni-directional Antenna (18dB Gain)
SR1
SR2
HPA4000 – Headphone Amplifier (8x stereo jack inputs, 1 HP output)
CU400 – Charging Unit for WMS400/450 (2 transmitter / unit)
ZAPD-21 – Passive Combiner 2:1 and 1:2
ASU4000 – Antenna Supply Unit
● Supplies up to three active elements (RA4000BW, SRA2BW, AB4000)
AB4000 – Antenna Booster
● 3.5 dB – 17.5 dB amplifier
DEV1
DEV2
HUB4000Q – Network Concentrator for 8 devices (SR4000 or SST4)
● Operate with Harman „System Architect“ software - http://hiqnet.harmanpro.com
MKPS – 0.65m/2 feet RG58 antenna cable
MKA5 – 5m/16ft RG58 antenna cable
MKA20 – 20/66ft RG58 antenna cable
0110E01890 – Front assembly cable
● Install ¼ wave antennas at the front of the rack
Front assembly cable & ¼ wave antenna
MCS0802001
Wolfgang Fritz / Feb. 2008
8
1 Channel WMS450 System
With directional antennas & 40m antenna cable (132 feet)
BNC I-connector
Available e.g. www.rs-components.com,
Ordernumber 112-1798
AC12 Power Supply (500mA)
SRA2 B/W
ANT OUT
2x MKA20
(BNC I-connector is necessary to link cables!)
BNC I-connector
Available e.g. www.rs-components.com,
Ordernumber 112-1798
ANT IN
ASU4000
DC IN (12V/0.5A)
ANT OUT
AC12 Power Supply (500mA)
2xMKPS
SRA2 B/W
ANT OUT
2x MKA20
(BNC I-connector is necessary to link cables!)
ANT IN
ASU4000
DC IN (12V/0.5A)
ANT OUT
AC12 Power Supply (500mA)
AC12 Power Supply (500mA)
2 HT450 or PT450 charging system (optional)
CU400
5V Power Supply (1.4 A)
DC IN (5V/1.4A)
ANT A IN
ANT B IN
SR450
DC IN (12V/0.5A)
XLR
AUDIO OUT
AUDIO OUT
▼
Mixer
SR3
SR4
SR6
SR8
SR7
SR5
HPA4000
DC IN (12V/0.5A)Headphone
K171 Studio Headphone
¼“ TS
Headphone amplifier (optional)
SR1
SR2
Date Revision
Designer
Project
Build document1.0
02.02.2008
Wolfgang Fritz
1 channel WMS450 system
(SRA2 B/W – Antennas)
Ref.No.
1.0
MCS0802001
9
1 Channel WMS450 System with directional antennas, no PSU4000, no PS4000
unitsdescriptioncommentcode
1
WMS 450
2
SRA 2 B/W
2
MK PS
4
MKA 20
2
ASU 4000 (BNC/none)
2
AC 12
BNC I-connector
2
73
72
54
55
10
4
PT 450 or HT 450 transmitter; SR 450 receiver, with AC adapter, rack mount kit, mic holder,
batteries, user's manual; carrying case
External directional active "paddle" antenna with amplifier (2 req.)3009Z0001
Connecting cable for PS to SR 2.15ft (65cm)6000H0206
66 ft. (20m) Cables for connecting ext. antennas to multi-couplers (2 req.) KOAX RG586000H0205
Antenna Supply unit for long antenna cables (BNC connector) without AC-Adapter3009Z0010
12V AC-Adapter for 1 PS 4000, ASU4000, HUB 4000, HPA 4000 or SR 4000.7801H000…
EXTERNAL !! Not available at AKG
(you can buy it at www.rs-components.com, Ordernumber 112-1798)
- BNC I-Connector
3235X....
3236X....
3237X....
3238X....
3239X....
Optional Components (Charging System & Headphone Amplifier)
unitsdescriptioncommentcode
1
1
1
1
CU 400
HPA 4000/ none
K171 Studio
AC 12
35
45
85
4
Charging unit for WMS 400 transmitters, AC adapters included2934Z000…
Headphone monitoring amplifier-8 receivers ins; & selectable out without AC Adapter2998Z0004
Closed-back circum-aural dynamic stereo headphone, mini XLR connector, detachable cable2908Z0001
12V AC-Adapter for 1 PS 4000, ASU4000, HUB 4000, HPA 4000 or SR 4000.7801H000…
MCS0802001
Wolfgang Fritz / Feb. 2008
10
1 Channel WMS450 System
with omni-directional antennas & 25m antenna cable (82 feet)
BNC I-connector
Available e.g. www.rs-components.com,
Ordernumber 112-1798
AC12 Power Supply (500mA)
RA4000 B/W
ANT OUT
1x MKA20 + 1x MKA5
(BNC I-connector is necessary to link cables!)
BNC I-connector
Available e.g. www.rs-components.com,
Ordernumber 112-1798
ANT IN
ASU4000
DC IN (12V/0.5A)
ANT OUT
AC12 Power Supply (500mA)
2xMKPS
RA4000 B/W
ANT OUT
1x MKA20 + 1x MKA5
(BNC I-connector is necessary to link cables!)
ANT IN
ASU4000
DC IN (12V/0.5A)
ANT OUT
AC12 Power Supply (500mA)
AC12 Power Supply (500mA)
2 HT450 or PT450 charging system (optional)
CU400
5V Power Supply (1.4 A)
DC IN (5V/1.4A)
ANT A IN
ANT B IN
SR450
DC IN (12V/0.5A)
XLR
AUDIO OUT
AUDIO OUT
▼
Mixer
SR3
SR4
SR6
SR8
SR7
SR5
HPA4000
DC IN (12V/0.5A)Headphone
K171 Studio Headphone
¼“ TS
Headphone amplifier (optional)
SR1
SR2
Date Revision
Designer
Project
Build document1.0
02.02.2008
Wolfgang Fritz
1 channel WMS450 system
(RA4000 B/W – Antennas)
Ref.No.
1.0
MCS0802001
11
1 Channel WMS450 System with omni-directional antennas, no PSU4000, no PS4000
unitsdescriptioncommentcode
1
WMS 450
2
RA 4000 B/W
2
MK PS
4
MKA 20
2
ASU 4000 (BNC/none)
2
AC 12
BNC I-connector
2
73
66
54
55
10
4
PT 450 or HT 450 transmitter; SR 450 receiver, with AC adapter, rack mount kit, mic holder,
batteries, user's manual; carrying case
External omni-directional active dipoleantenna with amplifier (2 req.)2632Z0030
Connecting cable for PS to SR 2.15ft (65cm)6000H0206
66 ft. (20m) Cables for connecting ext. antennas to multi-couplers (2 req.) KOAX RG586000H0205
Antenna Supply unit for long antenna cables (BNC connector) without AC-Adapter3009Z0010
12V AC-Adapter for 1 PS 4000, ASU4000, HUB 4000, HPA 4000 or SR 4000.7801H000…
EXTERNAL !! Not available at AKG
(you can buy it at www.rs-components.com, Ordernumber 112-1798)
- BNC I-Connector
3235X....
3236X....
3237X....
3238X....
3239X....
Optional Components (Charging System & Headphone Amplifier)
unitsdescriptioncommentcode
1
1
1
1
CU 400
HPA 4000/ none
K171 Studio
AC 12
35
45
85
4
Charging unit for WMS 400 transmitters, AC adapters included2934Z000…
Headphone monitoring amplifier-8 receivers ins; & selectable out without AC Adapter2998Z0004
Closed-back circum-aural dynamic stereo headphone, mini XLR connector, detachable cable2908Z0001
12V AC-Adapter for 1 PS 4000, ASU4000, HUB 4000, HPA 4000 or SR 4000.7801H000…
MCS0802001
Wolfgang Fritz / Feb. 2008
12
2 Channel WMS450 System
With directional antennas & 40m antenna cable (132 feet)
BNC I-connector
Available e.g. www.rs-components.com,
Ordernumber 112-1798
AC12 Power Supply (500mA)
SRA2 B/W
ANT OUT
2x MKA20
(BNC I-connector is necessary to link cables!)
BNC I-connector
Available e.g. www.rs-components.com,
Ordernumber 112-1798
ANT IN
ASU4000
DC IN (12V/0.5A)
ANT OUT
ZAPD-21
ASB
AC12 Power Supply (500mA)
2xMKPS
4xMKPS
SRA2 B/W
ANT OUT
2x MKA20
(BNC I-connector is necessary to link cables!)
ANT IN
ASU4000
DC IN (12V/0.5A)
ANT OUT
S
ZAPD-21
A
B
ANT A IN
ANT B IN
SR450
AC12 Power Supply (500mA)AC12 Power Supply (500mA)
AC12 Power Supply (500mA)
DC IN (12V/0.5A)
XLR
AUDIO OUT
▼
Mixer
¼“ TS
AUDIO OUT
SR3
SR4
SR6
SR8
SR7
SR5
HPA4000
DC IN (12V/0.5A)Headphone
K171 Studio Headphone
SR1
SR2
2 HT450 or PT450 charging system (optional)
CU400
5V Power Supply (1.4 A)
DC IN (5V/1.4A)
ANT A IN
SR450
DC IN (12V/0.5A)
XLR
AUDIO OUT
▼
Mixer
Headphone amplifier (optional)
Date Revision
Designer
Project
ANT B IN
¼“ TS
AUDIO OUT
Build document1.0
02.02.2008
Wolfgang Fritz
2 channel WMS450 system
(SRA2 B/W – Antennas, no PS4000, PSU4000)
Ref.No.
1.0
MCS0802001
13
2 Channel WMS450 System with directional antennas, no PSU4000, no PS4000
unitsdescriptioncommentcode
2
WMS 450
2
SRA 2 B/W
6
MK PS
4
MKA 20
2
ASU 4000 (BNC/none)
2
AC 12
2
ZAPD21
BNC I-connector
2
73
72
54
55
10
4
88
PT 450 or HT 450 transmitter; SR 450 receiver, with AC adapter, rack mount kit, mic holder,
batteries, user's manual; carrying case
External directional active "paddle" antenna with amplifier (2 req.)3009Z0001
Connecting cable for PS to SR 2.15ft (65cm)6000H0206
66 ft. (20m) Cables for connecting ext. antennas to multi-couplers (2 req.) KOAX RG586000H0205
Antenna Supply unit for long antenna cables (BNC connector) without AC-Adapter3009Z0010
12V AC-Adapter for 1 PS 4000, ASU4000, HUB 4000, HPA 4000 or SR 4000.7801H000…
passive power combiner (2in 1out) or Splitter (1in 2out)SERVSON76
EXTERNAL !! Not available at AKG
(you can buy it at www.rs-components.com, Ordernumber 112-1798)
- BNC I-Connector
3235X....
3236X....
3237X....
3238X....
3239X....
Optional Components (Charging System & Headphone Amplifier)
unitsdescriptioncommentcode
1
1
1
1
CU 400
HPA 4000/ none
K171 Studio
AC 12
35
45
85
4
Charging unit for WMS 400 transmitters, AC adapters included2934Z000…
Headphone monitoring amplifier-8 receivers ins; & selectable out without AC Adapter2998Z0004
Closed-back circum-aural dynamic stereo headphone, mini XLR connector, detachable cable2908Z0001
12V AC-Adapter for 1 PS 4000, ASU4000, HUB 4000, HPA 4000 or SR 4000.7801H000…
MCS0802001
Wolfgang Fritz / Feb. 2008
14
2 Channel WMS450 System
with omni-directional antennas & 25m antenna cable (82 feet)
BNC I-connector
Available e.g. www.rs-components.com,
Ordernumber 112-1798
AC12 Power Supply (500mA)
RA4000 B/W
ANT OUT
1x MKA20 + 1x MKA5
(BNC I-connector is necessary to link cables!)
BNC I-connector
Available e.g. www.rs-components.com,
Ordernumber 112-1798
ANT IN
ASU4000
DC IN (12V/0.5A)
ANT OUT
ZAPD-21
ASB
AC12 Power Supply (500mA)
2xMKPS
4xMKPS
RA4000 B/W
ANT OUT
1x MKA20 + 1x MKA5
(BNC I-connector is necessary to link cables!)
ANT IN
ASU4000
DC IN (12V/0.5A)
ANT OUT
S
ZAPD-21
A
B
ANT A IN
ANT B IN
SR450
AC12 Power Supply (500mA)AC12 Power Supply (500mA)
AC12 Power Supply (500mA)
DC IN (12V/0.5A)
XLR
AUDIO OUT
▼
Mixer
¼“ TS
AUDIO OUT
SR3
SR4
SR6
SR8
SR7
SR5
HPA4000
DC IN (12V/0.5A)Headphone
K171 Studio Headphone
SR1
SR2
2 HT450 or PT450 charging system (optional)
CU400
5V Power Supply (1.4 A)
DC IN (5V/1.4A)
ANT A IN
SR450
DC IN (12V/0.5A)
XLR
AUDIO OUT
▼
Mixer
Headphone amplifier (optional)
Date Revision
Designer
Project
ANT B IN
¼“ TS
AUDIO OUT
Build document1.0
02.02.2008
Wolfgang Fritz
2 channel WMS450 system
(RA4000 B/W – Antennas, no PS4000, PSU4000)
Ref.No.
1.0
MCS0802001
15
2 Channel WMS450 System with omni-directional antennas, no PSU4000, no PS4000
unitsdescriptioncommentcode
2
WMS 450
2
RA 4000 B/W
6
MK PS
2
MKA 20
2
MKA 5
2
ASU 4000 (BNC/none)
2
AC 12
2
ZAPD21
BNC I-connector
2
73
66
54
55
56
10
4
88
PT 450 or HT 450 transmitter; SR 450 receiver, with AC adapter, rack mount kit, mic holder,
batteries, user's manual; carrying case
External omni-directional active dipoleantenna with amplifier (2 req.)2632Z0030
Connecting cable for PS to SR 2.15ft (65cm)6000H0206
66 ft. (20m) Cables for connecting ext. antennas to multi-couplers (2 req.) KOAX RG586000H0205
16.5 ft. (5m) Cables for connecting ext. antennas to multi-couplers (2 req.) KOAX RG582455Z0062
Antenna Supply unit for long antenna cables (BNC connector) without AC-Adapter3009Z0010
12V AC-Adapter for 1 PS 4000, ASU4000, HUB 4000, HPA 4000 or SR 4000.7801H000…
passive power combiner (2in 1out) or Splitter (1in 2out)SERVSON76
EXTERNAL !! Not available at AKG
(you can buy it at www.rs-components.com, Ordernumber 112-1798)
- BNC I-Connector
3235X....
3236X....
3237X....
3238X....
3239X....
Optional Components (Charging System & Headphone Amplifier)
unitsdescriptioncommentcode
1
1
1
1
CU 400
HPA 4000/ none
K171 Studio
AC 12
35
45
85
4
Charging unit for WMS 400 transmitters, AC adapters included2934Z000…
Headphone monitoring amplifier-8 receivers ins; & selectable out without AC Adapter2998Z0004
Closed-back circum-aural dynamic stereo headphone, mini XLR connector, detachable cable2908Z0001
12V AC-Adapter for 1 PS 4000, ASU4000, HUB 4000, HPA 4000 or SR 4000.7801H000…
MCS0802001
Wolfgang Fritz / Feb. 2008
16
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