Clear Com MS-704 4 Channel Intercom Main Station

Description

Clear Com MS-704 4 Channel Intercom Main Station

The MS-704 is a 2RU four-channel main station with programmable front panel buttons, individual channel short-circuit protection, individual channel volume control, and a regulated fail-safe power supply.

Note: Access the Encore Power Supply Calculator to estimate power requirements for analog partyline systems.

Details

• Supports up to 55 beltpacks or 10 speaker stations on 4 channels
• Automatic short-circuit protection and reset with LED indicators
• Visual and audible call signaling
• 3 interruptible IFB channels
• Individual volume controls for each channel
• Program feed to both channels with selectable Program Interrupt
• Remote Mic Kill
• Stage Announce with relay
• Channel A & B Link switch
• Built-in speaker
• Universal voltage power supply

Item Code

MS-704

Technical
Specifications

Panel Microphone Input

Input Type:Electret

Input Impedance:>=2K

Mic Limiter Threshold:0dBu ± 3dB

Mic Limiter Range:>= 20dB

Headset Microphone Input

Input Type:Dynamic

Input Impedance:>= 1K

Mic Limiter Threshold:0dBu ± 3dB

Mic Limiter Range:>= 15 dB

Program Line Input

Maximum Level before Clipping:>= 20dBu

Input Impedance:>= 5K

Headset Output

Load Impedance:>= 8

Output Impedance:<= 25

Output Limiter Threshold:+5dBu ± 3dB

Maximum Output Level before Distortion:>= 17dBu

Speaker Output

Load Impedance:>= 4

Max Output Level before 1% Distortion:20dBu ± 2dBu

Partyline Output

O 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:180

Load 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:<= 25 dB

Mains Power

Input Voltage Range:100 – 240V AC

Input Frequency Range:50 – 60Hz

Input Power:<= 60V AC

Output Voltage:30V DC ± 0.5V

Output Current per Channel (Continuous):1.2A

Output Current per Channel (Peak):2A (Do not exceed the 1.2A rating for more than 2 seconds per 1 minute period)

Short Circuit Recovery Time (1st short):<= 0.5 sec

Short Circuit Recovery Time >= 20 shorts in 20sec:<= 20 sec

Environmental

32 – 122°F (0 – 50°C)

Dimensions

19 x 3.5 x 10.5in (WxHxD)

(483 x 88 x 267mm)

Weight

6.1lbs (2.8kg)