Clear-Com KB702GM

2 Channel Wall Mount Headset Speaker Station with Gooseneck Mic Connector

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Our Price: $495.00
List Price: $550.00
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  • Selectable two-channel, full-duplex operation
  • Microprocessor-controlled logic and switching
  • Momentary/latching talk button
  • Visual and audible call signaling, with bright LED indicator
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Clear-Com's KB-702GM remote speaker station permits the user to select between two channels of party-line communications, with the ability to talk and/or listen on the selected channel. The user can listen via the integral speaker, or may use a headset or telephone-style handset - and can talk via a headset mic, a telephone handset, or a push-to-talk microphone.

The KB-702GM adds a gooseneck-mic connector and VOX circuitry, for hands-free full-duplex communications without a headset. A switch allows the user to choose between the optional GM-9 or GM-18 microphone and the headset connector. The adjustablesensitivity, close-in VOX feature automatically detects the user’s voice at the mic and dips the level of the integral speaker while increasing the gain of the microphone, performing in the opposite manner when listening. The potential for acoustic feedback is minimized while permitting natural conversation levels and dynamics.

Microprocessor-controlled logic and switching yields a feature-rich intercom station in a compact format. Electronic switching for the talk button, blue-color LED (on), amber color LED (off), permits momentary or latching operation. For call signaling, a bright LED lights when a call is activated on a connected intercom channel. A defeatable audible call signal, with level control, is also provided. Separate level controls are provided for intercom level and for balanced program input. A local program source may be fed to the station, allowing the user to monitor that source while remaining in contact on the intercom system. The balanced program input can also be used in conjunction with the stage-announce output of a main station to provide a paging interrupt, allowing paging at the KB station even if the intercom volume control is turned down.

A set of option dip switches is located at the top of the circuit board. Swithces are provided for mic-latch disable (momentary-only talk), long-line operation, channel selection, call signal tracking, and audible call signaling.

These versatile stations may be wall or console mounted in a standard U.S. 4-gang electrical box, or may be mounted in the optional V-Box for desktop, surface-mount or portable applications.

Either of the stations may be used with the optional 4-wire or TW (two channels on a single mic cable) daughter boards. On the TW board, the stations become plug in compatible with a Clear Com TW system. The 4-wire board creates separate send and receive circuits, so that the station may be attached to fiber-optic lines or other audio routing systems with 4-wire connections. The stations are powered by the intercom line or by a local power supply when used with the optional 4-wire daughter board

Clear-Com KB702GM Features:

  • Selectable two-channel, full-duplex operation
  • Microprocessor-controlled logic and switching
  • Momentary/latching talk button
  • Visual and audible call signaling, with bright LED indicator
  • Balanced local program input with separate level control
  • Internal controls for call signal tracking, mic latch disable, and other functions
  • Use with headset or handset, with integral speakerfor monitoring
  • KB-702GM adds mic jack for gooseneck mic plus VOXcircuitry
  • Optional TW and 4-wire daughter boards provided additional flexibility
  • Wall or console mount, or optional V-Box for portable or desktop use
  • LED buttons for talk, listen, call, announce, link, all talk, or mic on

Clear-Com KB702GM Specifications:

  • Panel Microphone Input:
    • Input Type: Electret
    • Input Impedance: >=2K ohms
    • Mic Limiter Threshold: -2dBu ±3dB
    • Mic Limiter Range: >= 15dB
  • Headset MicrophoneInput:
    • Input Type: Dynamic
    • Input Impedance: >= 1Kohm
    • Mic Limiter Threshold: -2dBu ± 3dB
    • Mic Limiter Range: >= 15dB
  • Program Line Input:
    • Maximum Level before Clipping: >= 20dBu
    • Input Impedance: >= 5K ohms
  • Headset Output:
    • Load Impedance: >= 8 ohms
    • Output Impedance: < = 25 ohms
    • Output Limiter Threshold: +5dBu ± 3dB
    • Maximum Output Level before Distortion: >= 17dBu
  • Speaker Output:
    • Load Impedance: >= 4 ohms
    • Max Output Level before 1% Distortion: 20dBu ± 2dBu
  • Party LineOutput:
    • Off Noise: < -74dBu
    • Output Impedance: >10K ohms
  • Party Line Input:
    • Crosstalk: < -60dB
    • Max level before Clipping : >= 12dBu
    • Sidetone Null Capability: > 25dB
  • FrequencyResponse:
    • Panel Microphone - Party Line: 300 - 16KHz ± 3dB
    • Headset Microphone - Party Line: 300 - 15KHz ± 3dB
    • Program Input - Headset Out: 200 - 18KHz ± 3dB
    • Program Input - Speaker Out: 200 - 18KHz ± 3dB
    • Party Line - Headset Out: 200 - 18KHz ± 3dB
    • Party Line - Speaker Out: 200 - 18KHz ± 3dB
  • Max Distortion:
    • Panel Microphone - Party Line: < = 0.5%
    • Headset Microphone - Party Line: < = 0.5%
    • Program Input - Headset Out: < = 0.2%
    • Program Input - Speaker Out: < = 0.5%
    • Party Line - Headset Out: < = 0.2%
    • Party Line - Speaker Out: < = 0.5%
  • Noise:
    • Panel Microphone - Party Line: < -65dBu
    • Headset Microphone - Party Line: < -70dBu
    • Program Input - Headset Out: < -60dBu
    • Program Input - Speaker Out: < -60dBu
    • Party Line - Headset Out: < -50dBu
    • Party Line - Speaker Out: < -50dBu
  • Max Gain:
    • Panel Microphone - Party Line: >= 37dB
    • Headset Microphone - Party Line: 41dB ± 2dB
    • Program Input - Headset Out: >= 18dB
    • Program Input - Speaker Out: >= 24dB
    • Party Line - Headset Out: >= 34dB
    • Party Line - Speaker Out: >= 40dB
  • Power:
    • Input Voltage Range: 20-30 VDC
    • Input Current (Idle): < = 90mA
    • Input Current (Max): < =110mA
  • Internal Adjustments and Connections:
    • Intercom: Line Five terminal connector
    • Program Input Three terminal connector
    • Option Switches: Three DIP switches Call Signal Jumper3: Three sets of options jumpers
    • Call Alert Tone Level Control: Level adjustment control
  • Front Panel Connectors:
    • Panel Microphone : 1x 1/4" (0.64 cm) panel mounting jack
    • Headset: 1x XLR-4M
  • Front Panel Controls & Indicators:
    • 1x Panel /headset microphone switch
    • 1x Program monitor level control
    • 1x Sidetone null control
    • 1x Talk button
    • 1x Call button
    • 1x Speaker ON-OFF switch
    • 1x Channel select switch
    • 1x Speaker volume control
    • 1x VOX control
    • 1x VOX indicator
  • Environmental: 32 - 122°F
  • Dimensions (W x H x D): 8.25" W x 4.5" H x 1.75" D
  • Weight: 1.1 lb

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