Clear-Com MS704
Main Intercom Station with Power Supply, 4 Channel

OUR PART #  MS704-CC


The 704 series is Clear-Com's most advanced party-line intercom system. Each station is a four-channel intercom with superior audio and versatile channel access to provide unmatched communication flexibility. All front-panel controls are intuitive and easy to operate. The station's front-panel buttons are programmable and can be customized for a wide variety of applications that will meet the demands of any stage, studio, or field producer. Separate volume controls for every channel ensure the perfect audio mix in the headset or on the integral speaker. The regulated power supply in the MS-704 provides power for the entire intercom system.

Superior "Contoured" Audio
Compatible with all Clear-Com party-line intercoms, the 704 series accepts a wide range of dynamic headsets, with a choice of headset connectors. Optional plut-in noise-cancelling gooseneck microphones are available in 9" and 18" lengths.

Remote Mic Kill (RMK)
The MS-704 is equipped with a global RMK button. It will turn off the microphone talk circuits of all Clear-Com beltpacks in the system, eliminating extraneous noise from the "open" headset microphones.

Redundant "Failsave" Power Supply
The 1.2-amp universal switching power supply is a 30-volt regulated supply with multiple short circuit and an instantaneous overload, allowing the intercom to continue to operate even when a station is plugged in, momentarily exceeding the capacity of the power supply. If a shutdown occurs from a shorted intercom cable, the power supply will recover under full load when the short is removed.

"Easy Access" Sub Panel
A removable front panel gives the operator easy access to the station's configuration switches and trim pots. Clearly labeled and simple to adjust, these controls allow the station to be instantly configured for virtually any communications application. When configuration is complete, the front panel re-attaches, revealing only those controls useful for normal operation.

Multiple Program Audio Sources
The station accepts five separate program audio sources: four line-level balanced inputs and one assignable line level input. The assignable program input accepts a balanced signal and is designed for monitoring external audio in the headset or speaker. The four balanced program inputs can be used to create individual program feeds on the intercom channels. Three of these channels can be used for program interrupt.

Clear-Com MS704 Features:

  • Four Independent Intercom Channels for ultimate flexibility
  • Microprocessor-Controlled Logic assures maximum communications power
  • Universal Voltage Power Supply for 100 - 240 VACoperation, with short circuit protection on each channel
  • Linking Control instantly links channels together in“super party line”
  • Separate Talk and Listen Buttons for each channel
  • Individual Listen Volume Controls for each channel
  • “All-Talk” Function permits instant communications to all four channels
  • Four Separate Program Inputs are electronically balanced
  • Three Interruptible IFB Channels make talent cueing easy
  • “Announce” Button with Relay for external paging
  • Visual “Call Signaling” alerts users when others wantto speak to them
  • Wide-Range High-Output Speaker for optimum clarity in all acoustic environments
  • “Hot-Mic” Output allows easy connection to external IFBs
  • Adjustable Mic Proximity Compensation reduces acoustic feedback
  • Superior “Contoured” Audio insures excellent voice intelligibility under all noise conditions, including high-noise environments
  • LED buttons for talk, call, announce, link, all talk,and mic on
  • Remote Mic Kill switch turns off the microphone talk circuits

Clear-Com MS704 Specifications:

  • Panel Microphone Input
    • Input Type: Electret
    • Input Impedance: >=2Kohms
    • Mic Limiter Threshold: 0dBu ±3dB
    • MicLimiter Range MS-704: >= 20dB
  • Headset Microphone Input
    • Input Type: Dynamic
    • Input Impedance: >=1K ohm
    • Mic Limiter Threshold: 0dBu ±3dB
    • MicLimiter Range: >= 17dB< /UL>
    • Program Line Input
      • Maximum Level before
      • Clipping: >=20dBu
      • Input Impedance: >= 5K ohms< /UL>
      • Headset Output
        • Load Impedance: >= 8 ohms
        • Output Impedance: <=25 ohms
        • Output Limiter Threshold: +5dBu ± 3dB
        • Maximum Output Level before Distortion: >= 17dBu< /UL>
        • Speaker Output
          • Load Impedance: >= 4 ohms
          • Max Output Level before 1% Distortion: 20dBu ± 2dBu
        • Party Line Output
          • Off Noise: < -74dBu\
          • Output Impedance: >10K ohms
        • Party Line Input
          • Crosstalk: < -60dB
          • Max level before Clipping: >= 12dBu
          • Sidetone Null Capability: > 25dB
        • Stage Announce/Balanced Line Out
          • Type: Balanced
          • Output Impedance: >= 200 ohms
          • Load Impedance: >= 600 ohms< /UL>
          • IFB/Hot Mic
            • Type: Unbalanced
            • Output Impedance: 150 ohms
            • LoadImpedance: >= 600 ohms< /UL>
            • Frequency Response
              • Panel Mic - Party Line: 600 - 10KHz ± 3dB
              • HeadsetMic - Party Line: 200 - 12KHz ± 3dB
              • Headset Mic - Line Out: 200 - 12KHz ±3dB
              • Program Input - Party Line: 100 - 17KHz ± 3dB
              • Program Input -Headset Out: 200 - 10KHz ± 3dB
              • Program Input - Speaker Out: 300 - 10KHz ±3dB
              • Party Line - Headset Out: 200 - 10KHz ± 3dB
              • Party Line - Speaker Out: 300 - 10KHz ± 3dB
            • Max Distortion
              • Panel Mic - Party Line: <= 0.5%
              • Headset Mic -Party Line: <= 0.5%
              • Headset Mic - Line Out: <= 0.5%
              • Program Input- Party Line: <= 0.2%
              • Program Input - Headset Out: <= 0.2%
              • ProgramInput - Speaker Out: <= 0.5%
              • Party Line - Headset Out: <=0.2%
              • Party Line - Speaker Out: <= 0.5%< /UL>
              • Noise
                • Panel Mic - Party Line: < -65dBu
                • Headset Mic - Party Line:< -70dBu
                • Headset Mic - Line Out: < -55dBu
                • Program Input - PartyLine: < -85dBu
                • Program Input - Headset Out: < -60dBu
                • Program Input- Speaker Out: < -60dBu
                • Party Line - Headset Out: < -50dBu
                • Party Line - Speaker Out: < -50dBu
              • Max Gain
                • Panel Mic - Party Line: >= 37dB
                • Headset Mic - PartyLine: 41dB ± 2dB
                • Headset Mic - Hot Mic Out: 55dB ± 3dB
                • Headset Mic -Announce Out: 55dB ± 3dB
                • Program Input - Party Line: >= -16dB
                • ProgramInput - Headset Out: >= 18dB
                • Program Input - Speaker Out: >=24dB
                • Party Line - Headset Out: >= 34dB
                • Party Line - Speaker Out: >= 40dB< /UL>
                • Min Gain
                  • Panel Mic - Party Line:<= 25dB< /UL>
                  • Mains Power
                    • Input Voltage Range: 100 - 240 VAC
                    • Input FrequencyRange: 50 - 60 Hz
                    • Input Power: <= 60 VAC
                    • Output Voltage: 30 VDC ±0.5V
                    • Output Current per Channel (Continuous): 1.2 A
                    • Output Current perChannel (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): <= 0.5sec
                    • Short Circuit Recovery Time >= 20 shorts in20sec): <= 20 sec </UL>
                    • Station Capacity: Up to 40 RS-601 beltpacks or 10speaker 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" (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 mountingjack
                      • Headset: (1)XLR-4M
                    • Front Panel Controls & Indicators
                      • (1) Panel / headset micswitch
                      • (1) Mic on button
                      • (1) All talk button
                      • (1) Announcebutton
                      • (1) Party line link button
                      • (4) Program ON-OFF-INTERRUPT DIPswitches
                      • (1) Program level control
                      • (4) Listen adjust controls
                      • (4)Channel null adjust controls
                      • (4) Channel program feed adjustcontrols
                      • (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 latchdisable DIP switches
                      • (4) Line length DIP switches
                    • Environmental: 32 - 122°F
                    • Dimensions (W x H x D): 19" x 3.5" x 10.5"
                    • Weight: 10.86 lbs
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Usually ships in 7-14 business days.
Need it sooner? Call us!

Click to download

Clear-Com MS704
Main Intercom Station with Power Supply, 4 Channel

OUR PART #  MS704-CC

Product Information:

The 704 series is Clear-Com's most advanced party-line intercom system. Each station is a four-channel intercom with superior audio and versatile channel access to provide unmatched communication flexibility. All front-panel controls are intuitive and easy to operate. The station's front-panel buttons are programmable and can be customized for a wide variety of applications that will meet the demands of any stage, studio, or field producer. Separate volume controls for every channel ensure the perfect audio mix in the headset or on the integral speaker. The regulated power supply in the MS-704 provides power for the entire intercom system.

Superior "Contoured" Audio
Compatible with all Clear-Com party-line intercoms, the 704 series accepts a wide range of dynamic headsets, with a choice of headset connectors. Optional plut-in noise-cancelling gooseneck microphones are available in 9" and 18" lengths.

Remote Mic Kill (RMK)
The MS-704 is equipped with a global RMK button. It will turn off the microphone talk circuits of all Clear-Com beltpacks in the system, eliminating extraneous noise from the "open" headset microphones.

Redundant "Failsave" Power Supply
The 1.2-amp universal switching power supply is a 30-volt regulated supply with multiple short circuit and an instantaneous overload, allowing the intercom to continue to operate even when a station is plugged in, momentarily exceeding the capacity of the power supply. If a shutdown occurs from a shorted intercom cable, the power supply will recover under full load when the short is removed.

"Easy Access" Sub Panel
A removable front panel gives the operator easy access to the station's configuration switches and trim pots. Clearly labeled and simple to adjust, these controls allow the station to be instantly configured for virtually any communications application. When configuration is complete, the front panel re-attaches, revealing only those controls useful for normal operation.

Multiple Program Audio Sources
The station accepts five separate program audio sources: four line-level balanced inputs and one assignable line level input. The assignable program input accepts a balanced signal and is designed for monitoring external audio in the headset or speaker. The four balanced program inputs can be used to create individual program feeds on the intercom channels. Three of these channels can be used for program interrupt.

Clear-Com MS704 Features:

  • Four Independent Intercom Channels for ultimate flexibility
  • Microprocessor-Controlled Logic assures maximum communications power
  • Universal Voltage Power Supply for 100 - 240 VACoperation, with short circuit protection on each channel
  • Linking Control instantly links channels together in“super party line”
  • Separate Talk and Listen Buttons for each channel
  • Individual Listen Volume Controls for each channel
  • “All-Talk” Function permits instant communications to all four channels
  • Four Separate Program Inputs are electronically balanced
  • Three Interruptible IFB Channels make talent cueing easy
  • “Announce” Button with Relay for external paging
  • Visual “Call Signaling” alerts users when others wantto speak to them
  • Wide-Range High-Output Speaker for optimum clarity in all acoustic environments
  • “Hot-Mic” Output allows easy connection to external IFBs
  • Adjustable Mic Proximity Compensation reduces acoustic feedback
  • Superior “Contoured” Audio insures excellent voice intelligibility under all noise conditions, including high-noise environments
  • LED buttons for talk, call, announce, link, all talk,and mic on
  • Remote Mic Kill switch turns off the microphone talk circuits

Clear-Com MS704 Specifications:

  • Panel Microphone Input
    • Input Type: Electret
    • Input Impedance: >=2Kohms
    • Mic Limiter Threshold: 0dBu ±3dB
    • MicLimiter Range MS-704: >= 20dB
  • Headset Microphone Input
    • Input Type: Dynamic
    • Input Impedance: >=1K ohm
    • Mic Limiter Threshold: 0dBu ±3dB
    • MicLimiter Range: >= 17dB< /UL>
    • Program Line Input
      • Maximum Level before
      • Clipping: >=20dBu
      • Input Impedance: >= 5K ohms< /UL>
      • Headset Output
        • Load Impedance: >= 8 ohms
        • Output Impedance: <=25 ohms
        • Output Limiter Threshold: +5dBu ± 3dB
        • Maximum Output Level before Distortion: >= 17dBu< /UL>
        • Speaker Output
          • Load Impedance: >= 4 ohms
          • Max Output Level before 1% Distortion: 20dBu ± 2dBu
        • Party Line Output
          • Off Noise: < -74dBu\
          • Output Impedance: >10K ohms
        • Party Line Input
          • Crosstalk: < -60dB
          • Max level before Clipping: >= 12dBu
          • Sidetone Null Capability: > 25dB
        • Stage Announce/Balanced Line Out
          • Type: Balanced
          • Output Impedance: >= 200 ohms
          • Load Impedance: >= 600 ohms< /UL>
          • IFB/Hot Mic
            • Type: Unbalanced
            • Output Impedance: 150 ohms
            • LoadImpedance: >= 600 ohms< /UL>
            • Frequency Response
              • Panel Mic - Party Line: 600 - 10KHz ± 3dB
              • HeadsetMic - Party Line: 200 - 12KHz ± 3dB
              • Headset Mic - Line Out: 200 - 12KHz ±3dB
              • Program Input - Party Line: 100 - 17KHz ± 3dB
              • Program Input -Headset Out: 200 - 10KHz ± 3dB
              • Program Input - Speaker Out: 300 - 10KHz ±3dB
              • Party Line - Headset Out: 200 - 10KHz ± 3dB
              • Party Line - Speaker Out: 300 - 10KHz ± 3dB
            • Max Distortion
              • Panel Mic - Party Line: <= 0.5%
              • Headset Mic -Party Line: <= 0.5%
              • Headset Mic - Line Out: <= 0.5%
              • Program Input- Party Line: <= 0.2%
              • Program Input - Headset Out: <= 0.2%
              • ProgramInput - Speaker Out: <= 0.5%
              • Party Line - Headset Out: <=0.2%
              • Party Line - Speaker Out: <= 0.5%< /UL>
              • Noise
                • Panel Mic - Party Line: < -65dBu
                • Headset Mic - Party Line:< -70dBu
                • Headset Mic - Line Out: < -55dBu
                • Program Input - PartyLine: < -85dBu
                • Program Input - Headset Out: < -60dBu
                • Program Input- Speaker Out: < -60dBu
                • Party Line - Headset Out: < -50dBu
                • Party Line - Speaker Out: < -50dBu
              • Max Gain
                • Panel Mic - Party Line: >= 37dB
                • Headset Mic - PartyLine: 41dB ± 2dB
                • Headset Mic - Hot Mic Out: 55dB ± 3dB
                • Headset Mic -Announce Out: 55dB ± 3dB
                • Program Input - Party Line: >= -16dB
                • ProgramInput - Headset Out: >= 18dB
                • Program Input - Speaker Out: >=24dB
                • Party Line - Headset Out: >= 34dB
                • Party Line - Speaker Out: >= 40dB< /UL>
                • Min Gain
                  • Panel Mic - Party Line:<= 25dB< /UL>
                  • Mains Power
                    • Input Voltage Range: 100 - 240 VAC
                    • Input FrequencyRange: 50 - 60 Hz
                    • Input Power: <= 60 VAC
                    • Output Voltage: 30 VDC ±0.5V
                    • Output Current per Channel (Continuous): 1.2 A
                    • Output Current perChannel (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): <= 0.5sec
                    • Short Circuit Recovery Time >= 20 shorts in20sec): <= 20 sec </UL>
                    • Station Capacity: Up to 40 RS-601 beltpacks or 10speaker 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" (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 mountingjack
                      • Headset: (1)XLR-4M
                    • Front Panel Controls & Indicators
                      • (1) Panel / headset micswitch
                      • (1) Mic on button
                      • (1) All talk button
                      • (1) Announcebutton
                      • (1) Party line link button
                      • (4) Program ON-OFF-INTERRUPT DIPswitches
                      • (1) Program level control
                      • (4) Listen adjust controls
                      • (4)Channel null adjust controls
                      • (4) Channel program feed adjustcontrols
                      • (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 latchdisable DIP switches
                      • (4) Line length DIP switches
                    • Environmental: 32 - 122°F
                    • Dimensions (W x H x D): 19" x 3.5" x 10.5"
                    • Weight: 10.86 lbs
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The Clear-Com RS-701 is a single-channel analog beltpack featuring high performance audio for use in a wide variety of environments, all within a rugged ergonomic housing.The RS-701 is a single-channel analog beltpack with an XLR-3 line ...
Isolation Box for Partyline Interface
Clear-Com MT-701 Isolation Box for Partyline Interface
The MT-701 isolation box effectively reduces the hum in Clear-Com Encore Partyline products when multiple grounds are present. The isolation box is also capable of bridging two Encore partyline systems together making it an effective tool ...
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The IF4W4 modular 4-wire interface connects camera intercoms, two-way radios, fiber optics, and other 4-wire devices to a standard Clear-Com intercom line. The 1-RU chassis holds up to four individual interface modules, each with its own ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Click to download

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