Clear-Com MS-704

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.

• 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

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: >= 17dB

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:

• Off 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

• 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: <= 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): <= 0.5 sec

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

STATION CAPACITY:

• Up to 40 RS-601 beltpacks or 10 speaker stations or 12 headset stations distributed over all channels

REAR PANEL CONNECTORS:

• Intercom: XLR-3M (2 per channel)

• Announce Out: XLR-3M (audio)

• Program: (1) XLR-3F

• Hot Mic / IFB Interface: (1) 1/4 in. (0.64 cm) phone jack

• Accessory: (1) DB-15F

• AC Power: IEC 320 connector

REAR PANEL CONTROLS:

• (1) Power switch

FRONT PANEL CONNECTORS:

• Panel Mic: (1) 1/4 in. (0.64 cm) panel mounting jack

• Headset: (1) XLR-4M

FRONT PANEL CONTROLS & INDICATORS:

• (1) Panel / headset mic switch

• (1) Mic on button

• (1) All talk button

• (1) Announce button

• (1) Partyline link button

• (4) Program ON-OFF-INTERRUPT DIP switches

• (1) Program level control

• (4) Listen adjust controls

• (4) Channel null adjust controls

• (4) Channel program feed adjust controls

• (4) Talk buttons

• (4) Call buttons

• (4) Listen buttons

• (1) RMK button

• (1) Speaker ON-OFF switch

• (1) Speaker volume control

• (4) Short LEDs

• (1) Panel mic gain control

• (1) Sidetone adjust control

• (1) Headset audio limiter DIP switch

• (3) Interrupt enable DIP switches

• (4) Auto-call DIP switches

• (4) Auto-talk/listen DIP switches

• (4) Talk latch disable DIP switches

• (4) Line length DIP switches

ENVIRONMENTAL:

• 32 - 122F (0 - 50C)

DIMENSIONS:

• 19 in. W x 3.5 in. H x 10.5 in. D

• (483 mm x 88 mm x 267 mm)

WEIGHT:

• 10.86lbs. (4.94 kg)