Clear-Com MS-702 2 Channel Headset Speaker Main Station Intercom

2-Channel Headset/Speaker Main Station with built-in 2-amp power supply, rack mount (1RU) - UL Listed

Compact, feature-laden, single rack-space intercom main station supports up to 40 RS-701 beltpacks, 10 speaker stations or 12 headset stations on two channels.

Key Features

• Channel A-B linking
• Program input with individual channel level controls
• Remote Mic Kill switch
• External relay circuit
• Stage Announce

Technical Specifications

Panel Microphone Input
Input Type
Electret
Input Impedance
>=2K OHMS
Mic Limiter Threshold
0 dBu ±3 dB
Mic Limiter Range
>= 20 dB
Headset Microphone Input
Input Type
Dynamic
Input Impedance
>= 1K OHMS
Mic Limiter Threshold
0 dBu ± 3dB
Mic Limiter Range
>= 15 dB
Program Line Input
Maximum Level before Clipping
>= 20 dBu
Input Impedance
>= 5K OHMS
Headset Output
Load Impedance
>= 8 OHMS
Output Impedance
<= 25 OHMS
Output Limiter Threshold
+5 dBu ± 3 dB
Maximum Output Level before Distortion
>= 17 dBu
Speaker Output
Load Impedance
>= 4 OHMS
Max Output Level before 1% Distortion
20 dBu ± 2 dBu
Partyline Output
Off Noise
< -74 dBu
Output Impedance
>10 K OHMS
Partyline Input
Crosstalk
< -60 dB
Max level before Clipping
>= 12 dBu
Sidetone Null Capability
> 25 dB
Stage Announce/Balanced Line Out
Type
Balanced
Output Impedance
>= 200 OHMS
Load Impedance
>= 600 OHMS
IFB/Hot Mic
Type
Unbalanced
Output Impedance
180 OHMS
Load Impedance
>= 600 OHMS
Frequency Response
Panel Mic Partyline
600 - 10KHz ± 3dB
Headset Mic Partyline
200 - 12KHz ± 3 dB
Headset Mic - Line Out
200 - 12KHz ± 3 dB
Program Input Partyline
100 17KHz ± 3 dB
Program Input - Headset Out
200 - 10KHz ± 3 dB
Program Input - Speaker Out
300 - 10KHz ± 3 dB
Partyline - Headset Out
200 - 10KHz ± 3 dB
Partyline - Speaker Out
300 - 10KHz ± 3 dB
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
< -65 dBu
Headset Mic Partyline
< -70 dBu
Headset Mic - Line Out
< -55 dBu
Program Input Partyline
< -85 dBu
Program Input - Headset Out
< -60 dBu
Program Input - Speaker Out
< -60 dBu
Partyline - Headset Out
< -50 dBu
Partyline - Speaker Out
< -50 dBu
Max Gain
Panel Mic Partyline
>= 37 dB
Headset Mic Partyline
41 dB ± 2 dB
Headset Mic - Hot Mic Out
55 dB ± 3 dB
Headset Mic - Announce Out
55 dB ± 3 dB
Program Input Partyline
>= -16 dB
Program Input - Headset Out
>= 18 dB
Program Input - Speaker Out
>= 24 dB
Partyline - Headset Out
>= 34 dB
Partyline - Speaker Out
>= 40 dB
Min Gain
Panel Mic Partyline
<= 25 dB
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 both channels
Rear Panel Connectors
Intercom
(6) XLR-3M (3 per channel)
Announce Out
(1) XLR-3M (audio)
Announce Relay
(1) 1/4 in. (0.64 cm) phone jack (relay)
Program
(1) XLR-3F
Hot Mic / IFB Interface
(1) 1/4 in. (0.64 cm) phone jack
AC Power
IEC 320 connector
Rear Panel Controls
(2) Termination On-Off switches
(8) Option switches
(1) Power switch
(1) Tone alert volume control
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) Announce button
(1) Partyline link button
(2) Program ON-OFF-INTERRUPT switches
(3) Program level controls
(2) Listen controls
(2) Sidetone null controls
(2) Talk buttons
(2) Call buttons
(1) Tone alert button
(1) RMK button
(1) Speaker ON-OFF switch
(2) Short LEDs
Environmental
32 - 122F (0 - 50C)
Dimensions
19 in. W x 1.75 in. H x 6.5 in. D
(483 mm x 44 mm x 165 mm)
Weight
6.06 lbs. (2.75 kg)