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Clearcom – SB-704

Clearcom

4-Channel 2RU Switchboard Main Station

SKU: CLESB-704 Categories: , , , ,

Description

Designed for monitoring external audio, the assignable program inputs can be used to create individual program feeds on intercom channels.

Access switches and trim pots from a removable front panel to allow quick configuration of the system.

Remote Mic Kill turns off the microphone talk circuits of all Clear-Com beltpacks eliminating noise from the open headset microphones.

In the event of a short circuit or current overload, the protection circuit with shut down the output to avoid damage and will automatically restore the system power as soon as the fault condition is removed.

Feature Quick View

  • 4-Channel 2RU Switchboard Main Station
  • Supports up to 55 beltpacks or 10 speaker stations on 4 channels
  • 10 x 4 assignment switching matrix
  • Automatic short-circuit protection and reset with LED indicators
  • Visual and audible call signaling
  • 3 interruptible IFB channels
  • Individual volume controls for each channel
  • Channel linking
  • Remote Mic Kill
  • Stage Announce with relay
  • External switchable line termination on each channel
  • Universal voltage power supply

Additional information

Weight 4.9 kg
Panel Microphone Input

Input Type: Electret Input Impedance: >=2K Mic Limiter Threshold: 0dBu ±3dB Mic Limiter Range: >= 15dB
Headset Microphone Input

Input Type: Dynamic Input Impedance: >= 1K Mic Limiter Threshold: 0dBu ±3dB Mic Limiter Range: >= 15dB
Program Line Input

Maximum Level before Clipping: >= 20dBu Input Impedance: >= 5K
Headset Output

Load Impedance: >= 8 Output Impedance: = 17dBu
Speaker Output

Load Impedance: >= 4 Max Output Level before 1% Distortion: 20dBu ± 2dBu
Partyline Output

Output Noise: < -74dBu Output Impedance: >10K
Partyline Input

Crosstalk: < -60dB Max level before Clipping: >= 12dBu Sidetone Null Capability: > 25dB
Stage Announce/Balanced Line Out

Type: Balanced Output Impedance: >= 200 Load Impedance: >= 600
IFB/Hot Mic

Type: Unbalanced Output Impedance: 150 Impedance: >= 600
Frequency Response

Panel Mic – Partyline: 600 – 10KHz ± 3dB Headset Mic – Partyline: 200 – 12KHz ± 3dB Headset Mic – Line Out: 200 – 12KHz ± 3dB Program Input – Partyline: 100 – 17KHz ± 3dB Program Input – Headset Out: 200 – 10KHz ± 3dB Program Input – Speaker Out: 300 – 10KHz ± 3dB Partyline – Headset Out: 200 – 10KHz ± 3dB Partyline – Speaker Out: 300 – 10KHz ± 3dB
Max Distortion

Panel Mic – Partyline: <= 0.5% Headset Mic – Partyline: <= 0.5% Headset Mic – Line Out: <= 0.5% Program Input – Partyline: <= 0.2% Program Input – Headset Out: <= 0.2% Program Input – Speaker Out: <= 0.5% Partyline – Headset Out: <= 0.2% Partyline – Speaker Out: <= 0.5%
Noise

Panel Mic – Partyline: < -65dBu Headset Mic – Partyline: < -70dBu Headset Mic – Line Out: < -55dBu Program Input – Partyline: < -85dBu Program Input – Headset Out: < -60dBu Program Input – Speaker Out: < -60dBu Partyline – Headset Out: < -50dBu Partyline – Speaker Out: < -50dBu
Max Gain

Panel Mic – Partyline: >= 37dB Headset Mic – Partyline: 41dB ± 2dB Headset Mic – Hot Mic Out: 55dB ± 3dB Headset Mic – Announce Out: 55dB ± 3dB Program Input – Partyline: >= -16dB Program Input – Headset Out: >= 18dB Program Input – Speaker Out: >= 24dB Partyline – Headset Out: >= 34dB Partyline – Speaker Out: >= 40dB
Min Gain

Panel Mic – Partyline: <= 25dB
Mains Power

Input Voltage Range: 100 – 240 VAC Input Frequency Range: 50 – 60 Hz Input Power: <= 60 VAC Output Voltage: 30 VDC ± 0.5V Output Current per Channel (Continuous): 1.2 A Output Current per Channel (Peak): 2 A (Do not exceed the 1.2A rating for more than 2 seconds per 1 minute period) Short Circuit Recovery Time (1st short):= 20 shorts in 20sec):<= 20 sec
Environmental

32 – 122°F (0 – 50°C)
Dimensions

3.5 x 19 x 10.5 in (HxWxD) (88 x 483 x 267 mm)

Downloads

Spec Sheet Download
Manual Download