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CFU Amplifiers |
A well mannered amplifier should accept an input, amplify it, drive it into the connected load without any extra noises, distortion or speaker threatening DC failures and definitely no expensive vacations to the repair shop. User error must be met with quiet protection, not with system-destroying violence... and it has to sound good. These are the simple criteria that form the basis of the CFU Amplification philosophy.
Behind the elegant fascia, an unusually large amount of output transistors and massive power supply. Many designers specify the transistor compliment by the maximum that can be wrung from each device, ignoring the fact that good behaviour is dependant upon transistor-die area and sufficient heat removal. CFU Amplifiers use a very large number of output devices per watt attached to proprietary heat sinks, optimised aero-dynamics and twin thermally controlled proportional fans.
The two ohm capability and massive power output enhances the versatility of this range of amplifiers.
Perfect for powering the full range of OHM loudspeakers and subwoofers.
Balanced line inputs and links are provided on industry standard Neutrik XLR connectors, for fixed installations a barrier strip is provided. Slide switches offer three gain options, a simple 100Hz low pass filter, stereo, bridge, parallel options and an earth lift.
Outputs via Neutrik Speakon connectors and binding posts providing multi-connection options including bridge and bi-amp. Mains inlet is by way of a fixed power cable. The whole unit is protected by a circuit breaker.
CFU Amplifiers provide loudspeaker DC, over temperature, short circuit and over current limiters as standard.
Attractively Styled, reliable and tough, ready for static installation or life on the road.
"Velvet sound in an iron glove" |
| Output 8 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 70W |
| Output 4 Ohms 1kHz THD<0.1% Stereo Mode |
2 x135W |
| Output 2 Ohms 1kHz THD<0.1% Stereo Mode |
- |
| Output 8 Ohms 1kHz THD<0.1% Bridge Mode |
230W |
| Output 4 Ohms 1kHz THD<0.1% Bridge Mode |
- |
| Frequency Response
@1 Watt into 8 Ohm |
20Hz-20kHz +0, -0.3dB |
| Input Sensitivity |
0.77V /
1.1V /
26dB |
| THD+N |
<0.02%
@1kHz |
| Damping Factor @ 400Hz into 8 Ohm |
>500 |
| IMD |
<0.02%@ 100W into 8 Ohm (60Hz & 7kHz) |
| Input Impedance |
> 20k Ohm Balanced / >10k Ohm Unbalanced |
| Signal/Noise (A- Weighted) |
>100dB |
| Crosstalk at Rated Output 8 Ohms 1kHz |
>60dB |
| Class |
B |
| Input / Links / Output Connectors |
Combi / Male XLR / Neutrik Speakon and Binding Post |
| Indicators |
-30dB, -15dB, -3dB, Signal Input, Clip |
| Power Supply |
AC 240V 50Hz |
| Dimension (mm) |
44 x 482 x 386 (H x W x D) |
| weight
(kg) |
10.5 |
| Output 8 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 220W |
| Output 4 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 400W |
| Output 2 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 600W |
| Output 8 Ohms 1kHz THD<0.1% Bridge Mode |
800W |
| Output 4 Ohms 1kHz THD<0.1% Bridge Mode |
1200W |
| Frequency Response
@1 Watt into 8 Ohm |
20Hz-20kHz +0, -0.3dB |
| Input Sensitivity |
0.77V /
1.1V /
26dB |
| THD+N |
<0.02%
@1kHz |
| Damping Factor @ 400Hz into 8 Ohm |
>500 |
| IMD |
<0.02%@ 100W into 8 Ohm (60Hz & 7kHz) |
| Input Impedance |
> 20k Ohm Balanced / >10k Ohm Unbalanced |
| Signal/Noise (A- Weighted) |
>100dB |
| Crosstalk at Rated Output 8 Ohms 1kHz |
>60dB |
| Class |
AB |
| Input / Links / Output Connectors |
Female XLR & Barrier Strip / Male XLR / Neutrik Speakon and Binding Post |
| Indicators |
-30dB, -15dB, -3dB, Signal Input, Peak, Clip |
| Power Supply |
AC 240V 50Hz |
| Dimension (mm) |
88 x 482 x 451 (H x W x D) |
| weight
(kg) |
20 |
| Output 8 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 650W |
| Output 4 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 1100W |
| Output 2 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 1600W |
| Output 8 Ohms 1kHz THD<0.1% Bridge Mode |
2200W |
| Output 4 Ohms 1kHz THD<0.1% Bridge Mode |
3200W |
| Frequency Response @1 Watt into 8 Ohm |
20Hz-20kHz +0, -0.3dB |
| Input Sensitivity |
0.77V / 1.1V / 26dB |
| THD+N |
<0.02% @1kHz |
| Damping Factor @ 400Hz into 8 Ohm |
>500 |
| IMD |
<0.02%@ 100W into 8 Ohm (60Hz & 7kHz) |
| Input Impedance |
> 20k Ohm Balanced/>10k Ohm Unbalanced |
| Signal/Noise (A- Weighted) |
>100dB |
| Crosstalk at Rated Output 8 Ohms 1kHz |
>60dB |
| Class |
H |
| Input / Links / Output Connectors |
Female XLR & Barrier Strip / Male XLR / Neutrik Speakon and Binding Post |
| Indicators |
-30dB, -15dB, -3dB, Signal Input, Peak, Clip |
| Power Supply |
AC 240V 50Hz |
| Dimension (mm) |
88 x 482 x 451 (H x W x D) |
| weight (kg) |
25.5 |
| Output 8 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 880W |
| Output 4 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 1500W |
| Output 2 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 2200W |
| Output 8 Ohms 1kHz THD<0.1% Bridge Mode |
3000W |
| Output 4 Ohms 1kHz THD<0.1% Bridge Mode |
4400W |
| Frequency Response @1 Watt into 8 Ohm |
20Hz-20kHz +0, -0.3dB |
| Input Sensitivity |
0.77V / 1.1V / 26dB |
| THD+N |
<0.02% @1kHz |
| Damping Factor @ 400Hz into 8 Ohm |
>500 |
| IMD |
<0.02%@ 100W into 8Ohm (60Hz & 7kHz) |
| Input Impedance |
> 20k Ohm Balanced/>10k Ohm Unbalanced |
| Signal/Noise (A- Weighted) |
>100dB |
| Crosstalk at Rated Output 8 Ohms 1kHz |
>60dB |
| Class |
H |
| Input / Links / Output Connectors |
Female XLR & Barrier Strip / Male XLR / Neutrik Speakon and Binding Post |
| Indicators |
-30dB, -15dB, -3dB, Signal Input, Peak, Clip |
| Power Supply |
AC 240V 50Hz |
| Dimension (mm) |
130 x 482 x 451 (H x W x D) |
| weight (kg) |
30.2 |
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LA Amplifiers |
Behind the elegant fascia, an unusually large number of output transistors and massive power supply are at the heart of the LA amplifier design. LA Series Amplifiers use a very large number of live output devices per watt attached directly to proprietary heat sinks, optimised aero-dynamically and force cooled by twin thermally controlled fans.
The front of the amplifier features left and right gain controls. An array of status LED’s indicates output and clip. A heavy duty mains switch completes the layout .
Power On is indicated by the illuminated gain knobs, when in Bridge mode the channel B led is extinguished. Balanced line inputs and links are provided on industry standard Neutrik male and female XLR connectors, Internal slide switches offer two gain settings and limiter by-pass.
User accessible external slide switches control stereo, mono and bridge functions, high pass, low pass and full range functions via the fixed 100Hz internal crossover. Ideal for a very cost effective subwoofer satellite system.
Stereo outputs are via Neutrik Speakon® compatible connectors, A third connector is provided for the bridge output option, the Channel A connector can also be wired Bi-amp.
Mains inlet is by way of a Neutrik Powercon®. The whole unit is protected by a resettable trip switch. Loudspeaker DC, over temperature, short circuit and switchable over current limiters are additional failsafe features fitted as standard.
Attractively styled, reliable and tough, ready for static installation or life on the road.
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| Output 8 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 340W |
| Output 4 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 600W |
| Output 2 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 800W |
| Output 8 Ohms 1kHz THD<0.1% Bridge Mode |
1200W |
| Output 4 Ohms 1kHz THD<0.1% Bridge Mode |
1600W |
| Frequency Response
@1 Watt into 8 Ohm |
20Hz-20kHz +0,±0.1dB |
| Input Sensitivity |
0.775V /
1.0V /1.55V |
| THD+N |
<0.06%
@ 8Ω 1kHz |
| Damping Factor @ 400Hz into 8 Ohm |
400:1 |
| IMD |
<0.02%@ 100W into 8 Ohm (60Hz & 7kHz) |
| Input Impedance |
> 20k Ω Balanced / >10k Ω Unbalanced |
| Signal/Noise (A- Weighted) |
>-75dB |
| Crosstalk at Rated Output 8 Ohms 1kHz |
>-70dB |
| Class |
AB |
| Input / Links / Output Connectors |
Female XLR / Male XLR / Neutrik Speakon / Binding Post |
| Indicators |
-30dB, -15dB, -3dB, Signal, Clip, Bridge, Mono, High, Full, Low |
| Power Supply |
AC 240V 50Hz 10A Fuse |
| Dimension (mm) |
88 x 483 x449(H x W x D) |
| weight
(kg) |
18 |
| Output 8 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 600W |
| Output 4 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 900W |
| Output 2 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 1300W |
| Output 8 Ohms 1kHz THD<0.1% Bridge Mode |
1800W |
| Output 4 Ohms 1kHz THD<0.1% Bridge Mode |
2600W |
| Frequency Response
@1 Watt into 8 Ohm |
20Hz-20kHz +0,±0.1dB |
| Input Sensitivity |
0.775V /
1.0V /1.55V |
| THD+N |
<0.06%
@ 8Ω 1kHz |
| Damping Factor @ 400Hz into 8 Ohm |
450:1 |
| IMD |
<0.02%@ 100W into 8 Ohm (60Hz & 7kHz) |
| Input Impedance |
> 20k Ω Balanced / >10k Ω Unbalanced |
| Signal/Noise (A- Weighted) |
>-75dB |
| Crosstalk at Rated Output 8 Ohms 1kHz |
>-70dB |
| Class |
H |
| Input / Links / Output Connectors |
Female XLR / Male XLR / Neutrik Speakon / Binding Post |
| Indicators |
-30dB, -15dB, -3dB, Signal, Clip, Bridge, Mono, High, Full, Low |
| Power Supply |
AC 240V 50Hz 12A Fuse |
| Dimension (mm) |
88 x 483 x449(H x W x D) |
| weight
(kg) |
22 |
| Output 8 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 800W |
| Output 4 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 1300W |
| Output 2 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 1800W |
| Output 8 Ohms 1kHz THD<0.1% Bridge Mode |
2600W |
| Output 4 Ohms 1kHz THD<0.1% Bridge Mode |
3600W |
| Frequency Response
@1 Watt into 8 Ohm |
20Hz-20kHz +0,±0.1dB |
| Input Sensitivity |
0.775V /
1.0V /1.55V |
| THD+N |
<0.06%
@ 8Ω 1kHz |
| Damping Factor @ 400Hz into 8 Ohm |
500:1 |
| IMD |
<0.02%@ 100W into 8 Ohm (60Hz & 7kHz) |
| Input Impedance |
> 20k Ω Balanced / >10k Ω Unbalanced |
| Signal/Noise (A- Weighted) |
>-75dB |
| Crosstalk at Rated Output 8 Ohms 1kHz |
>-70dB |
| Class |
H |
| Input / Links / Output Connectors |
Female XLR / Male XLR / Neutrik Speakon / Binding Post |
| Indicators |
-30dB, -15dB, -3dB, Signal, Clip, Bridge, Mono, High, Full, Low |
| Power Supply |
AC 240V 50Hz 15A Fuse |
| Dimension (mm) |
88 x 483 x449(H x W x D) |
| weight
(kg) |
23 |
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DSP-A3 Amplifier |
The DSP-A3 amplifier combines reliable class H output stage, switch mode power supply and a fully featured DSP with Ethernet control. Weighing just thirteen kilograms ideally suited for touring systems.
Featuring a forty eight bit 96kHz AD/DA converter and a DSP system providing filtering, up to two seconds delay, Equalisation and Limiting functions. Setup, monitoring and controlling can be done locally or by use of the inbuilt Ethernet communication system. Adjustments and faults can be monitored via a Windows based computer over a local area network or via the internet remotely.
The user interface shows the DSP functionality just like an analogue unit with one-to-one portraits of every control. IP Addresses are automatically allocated to each amplifier. Settings can be saved to memory and recalled on demand. Software updates can be downloaded via the internet.
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| Output 8 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 1100W |
| Output 4 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 1700W |
| Output 2 Ohms 1kHz THD<0.1% Stereo Mode |
2 x 2500W |
| Output 8 Ohms 1kHz THD<0.1% Bridge Mode |
3400W |
| Output 4 Ohms 1kHz THD<0.1% Bridge Mode |
4200W |
| Frequency Response
@1 Watt into 8 Ohm |
5Hz-40kHz +0, -0.3dB |
| Input Sensitivity |
0.775V /
1.0V / 1.4V / 2.0V |
| THD+N |
<0.05%
@1kHz |
| Damping Factor @ 400Hz into 8 Ohm |
>600 |
| IMD |
<0.01%@ 100W into 8 Ohm unbalanced |
| Input Impedance |
> 20k Ohm Balanced / >10k Ohm Unbalanced |
| Signal/Noise (A- Weighted) |
>100dB flat, 103dBA |
| Crosstalk at Rated Output 8 Ohms 1kHz |
>60dB |
| Class |
H 3 Steps |
| Input / Links / Output Connectors |
Female XLR / Male XLR / Neutrik Speakon |
| Indicators |
Signal, Peak, Clip, Protect |
| Power Supply |
AC 230V 50Hz |
| Dimension (mm) |
89 x 483 x 455 (H x W x D) |
| Weight
(kg) |
13 |
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The Cleo goes digital. Recognising the requirement for affordable DSP, OHM are proud to announce the fully functioned CLEO Mk2 2-6 Loudspeaker System Controller.
The CLEO Mk2 is a 48k 2 input 6 output fully configurable digital unit for full system control. Providing crossover facilities offering up to 48dB/octave slopes, up to six outputs can be derived from either of the two inputs or a sum of both.
The CLEO will store up to 60 user custom programs. It comes preloaded with system parameters for limited OHM loudspeaker systems and features security lock out modes for protecting and hiding program settings.
Intuitive front panel controls for channel muting, programming and level information, with the option of interfacing the unit via a PC make this a truly flexible audio system solution.
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| Inputs |
Two |
| Input Impedance |
10k Ohm electronically balanced |
| Maximum Input level |
+20dBu |
| Input Gain |
±15db variable in 0.1dB steps |
| CMRR |
Better than 50dB (30Hz-20kHz) |
| Input Connector |
XLR-3F or equivalent |
| Input Sample Rate |
44.1, 48, 88.2, 96kHz |
| Output Impedance |
<50 Ohms electronically balanced |
| Maximum Output Level |
+20dB into 600 Ohms or greater |
| Gain |
±21dB, variable in 0.1dB steps |
| Output Connector |
XLR-3F or equivalent transformer balancing option |
| Crossover Filters - Slopes |
6, 12, 18, 24, or 48dB per octave (filter type dependant) |
| Crossover Filters - Type |
Bessel, Butterworth or Linkwitz-Riley |
| Delays available on Inputs A, B and Outputs 1, 2, 3, 4, 5, 6 |
| Delay Step |
11 microseconds minimum |
| Max Delay Time |
2.6 seconds |
| Max number of EQ Filters |
60 (depending on crossover slopes) |
| EQ Gain |
±15db variable in 0.2dB steps |
| EQ type |
Parametric, Bell or Shelving on any Filter. Nine Filters assigned to Dynamic EQ |
| Q (bandwidth) |
0.05 to 3 octaves, variable in 0.05 steps |
| EQ Frequency |
15Hz to 20kHz |
| Dynamic Slope |
2:1 to 20:1 (dynamic EQ`s only) |
| General Performance with Filters Out |
| Frequency Response |
15Hz-20kHz, ±0.25kB 15Hz \ -40kHz, ±3dB |
| DynamicRange |
>112dB unweighted 22Hz to 22kHz, >117dB on AES/EBU input |
| Channel Separation |
>80dB, 30Hz to 20kHz |
| Distortion (THD) |
<0.005%, 20Hz-20kHz@ +10dBu Output |
| Input Metering |
-20dB, -12dB, -6dB, -3dB, Clip relative to Clip point (+20dBu) |
| Output Meter Indication |
SIG (-40dB), -20dB, -12dB, -6dB, -3dB, 0dB, Over (+6dB) relative to limiter threshold setting |
| Mains Power |
110V - 240V AC. 50/60Hz, 30VA |
| Dimensions (mm) |
44 x 481 x 223 (H x W x D) |
| Weight (kg) |
3.6 |
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An essential and comprehensive arsenal of digital tools for the system designer. This totally new loudspeaker management system is an intuitive aid for today`s sound engineer.
Requiring only 1U of rack space, CRED equips the system designer with full control over system parameters.
Whilst in the digital domain, the user can control delay parameters, gain structures and fully assign multiple parametric E.Q.'s to both it's inputs and four or six outputs, dependant on model.
The CRED MK2 comes pre-loaded with pre-filtering parameters for all the Planet Suite, BR and TRS enclosures allowing plug and play operation of OHM's latest loudspeaker systems.
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| Input Impedance |
>10k Ohm electronically balanced |
| Maximum Input Level |
+20dBu |
| Outputs |
Four [Cred 2-4] or six [Cred 2-6] |
| Outputs Impedance |
<100 Ohm, ground balanced |
| Maximum Output Level |
+20dBu into 600 Ohm load |
| Sample Rte |
96kHz |
| Frequency Response |
10Hz to 40kHz ,±1.0dB (filters disabled)
10Hz to 20kHz, ±0.25dB (filters disabled) |
| THD |
<0.01%, (+10dBu, 20Hz to 20kHz, 30kHz bandwidth) |
| Dynamic Range |
>111dB (A weighted, 22kHz bandwidth)
>108dB (A weighted, 22kHz bandwidth) |
| Serial Comms Data |
38.4kbaud, format: 8 data, 1 stop, no parity |
| Audio Inputs |
3 pin female XLR |
| Outputs |
3 pin male XLR |
| Serial Comms |
9 pin female `D type` |
| Network Comms |
Future Option |
| Gain |
+20dB to -80dB and mute, 0.2dB steps |
| Output ch. source |
Input A, Input B and SUM |
| HP Filter Frequency |
Off, 10Hz to 25,4kHz, 1/36 octave steps |
| LP Filter Frequency |
10Hz to 25,4kHz, and off 1/36 octave steps |
| HP / LP Filter Type |
12, 18 & 24dB / octave Bessel and Butterworth, 12, 24 and 48dB / octave Linkwitz Riley and 4th or 8th order hardman |
| Maximum Delay |
Input 400ms, Output 80ms |
| Limiter |
High performance limiter, adjustable threshold in 0.2dB steps, automatic time constants |
| EQ Frequency |
10Hz to 25kHz, 1/36 octave steps |
| EQ Gain |
+15db to -15dB, 0.2dB steps |
| EQ width |
5.0 to 0.1 octaves bandwidth, 1/36 octave steps |
| Mains |
3 pin IEC |
| Mains Power |
universal switch mode PSU, 85V to 250V AC, 50/60Hz Audio |
| Consumption |
<25 Watts |
| Dimensions (mm) |
44 x 482 x 254 (H x W x D) |
| Weight (kg) |
2.1 |
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PD-1 Power Distribution Unit |
Designed to fit into the new OHM Proprietary flightcase, the 8U Power Distribution Board has a three phase 63 Amp single phase input and output, three phase isolator, six 32 Amp single phase outputs, one 13 Amp UK socket and a European Shuco outlet as well as an earth terminal.
Each of the 32 Amp outlets is fitted with an isolator, digital voltage and current meters. A USB socket is provided for a USB Gooseneck LED light or other USB device.
All housed in a robust metal case finished in OHM standard livery.
Picture in the UC-8U flightcase supplied as an optional extra |
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| Power Supply |
AC 3 Phase 380~415V 50Hz |
| Protection |
MCB 1 x 63A / MCB 6 x 32A |
| Power Input Connector |
C63 Socket (provided) |
| Indicators |
6 x Voltage, 6 x Ampere Meters |
| Power Outputs |
1 x C63 Plug / 6 x C32 Plug (provided) |
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1 x 13A UK Plug / 1 x Schucko Socket |
| Auxiliary Outputs |
1 x USB Sockets (5V) |
| Accessory |
1 x USB Gooseneck Light |
| Accessory Optional |
UC-8U Flightcase |
| Dimensions H x W x D (mm) |
356 x 483 x 455 |
| Weight (kg) |
23.4 |
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PP-1 Patch Panel |
To complement the DSP amplifiers, a matching two unit high Patch Panel is available which can be used to configure mains management, Inputs, Outputs and DSP LAN.
Mains is supplied via a trailing male single phase C32 socket and distributed to four Neutrik© Powercon outlets. There are LED indicators for phase and earth integrity and an isolator switch. To prevent power surges the mains outlets operate via a sequencer activated by a single front mounted switch. Sixteen dual Pomona sockets mounted on the rear of the enclosure provide a "User Assignable Matrix" to connect the ample array of front mounted Neutrik©four pole and eight pole connectors.
An internal Ethernet switch gives PC access for up to four DSP amplifiers by way of RJ45 connectors. Two USB connectors are provided for the connection of a Gooseneck LED light or other USB Devices. Neutrik© XLR inputs and links give the patch panel complete user versatility. Robust and ready for the road, this unit is designed to be housed in the UC-8U and UC-10U flight cases with up to four DSP-Series amplifiers |
| Power Supply |
AC 230V 50Hz |
| Protection |
MCB rated @ 32 Amps |
| Power Input Connector |
C32 Socket (provided) |
| Indicators |
Live, Neutral, Earth, Sequencer one to four |
| Power Outputs Connectors |
Powercon - NAC3MPB |
| Sequencer |
Push on Push off switch |
| Assignable Matrix |
Inputs 8 x pairs Pomona Sockets (plugs provided) |
| Output |
Speakons 4 x NL4MP, 2 x NL8MP |
| Signal Connectors |
Female XLR |
| Link Connectors |
Male XLR |
| Ethernet Connection |
RJ45 |
| USB |
2 x USB Sockets |
| Gooseneck Light |
Gooseneck light on USB |
| Dimensions H x W x D (mm) |
89 x 483 x 455 |
| Weight (kg) |
10 |
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