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Telex CM-300L Console Mount User Station w/ an A5F Headset Connector

Telex CM-300L Console Mount User Station w/ an A5F Headset Connector

B&H # TECM300LA5F MFR # F.01U.118.504
Telex CM-300L Console Mount User Station w/ an A5F Headset Connector

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Important Notice: This item is non-cancelable and non-returnable
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Expected availability: 7-14 business days 
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Product Highlights

  • Two Channel Intercom User Station
  • Volume Control
  • Microphone Switch
  • Channel Select Switch
  • Call Light Push Button
  • XLR type 4-Pin Female Connector x 1
  • Input: XLR Type 3-Pin Female x 1
  • Solid Metal Front
  • Open Back for Console Mounting
  • Uses the MCP-3 Mounting Kit
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  • 1Description
The CM-300L Console Mount User Station w/ an A5F Headset Connector from Telex is a two-channel select console mount user station. The user station is designed to be used in a full duplex, conference line intercom system.

It features a microphone limiter circuit, separate dynamic and carbon microphone inputs and silent channel-select switching. In normal system operation, one or more users talk and the others listen. A microphone switch on each station allows the talker's microphone to be enabled and allows the listeners to keep their microphones disabled.

The unit is housed in a solid metal front cabinet and the back is open for console mounting. The CM-300L uses the MCP-3 mounting kit.

Volume Control
The volume control on the CM-300L has a wide range to compensate for: user hearing differences, ambient noise variation, variations in headset / handset sensitivity, and variations in voice. The volume control in the CM-300L reduces distortion by driving the headphone amplifier only as much as needed
Microphone Switch
In normal system operation, one or more users talk and the others listen. A microphone switch on each station allows the talker's microphone to be enabled and allows the listeners to keep their microphones disabled. In this condition, speech intelligibility is enhanced since background noise from other microphones is not present. On the Model CM-300L, a toggle switch turns the microphone on
Channel Select Switch
A channel selector switch allows a choice of two (optionally three) channels. When the switch is on the "1" position the station talks and listens on channel 1, on the "2" position, to channel 2
Call Light Push Button
Pushing this button transmits a call signal to all other units on the channel selected by the channel selector switch. A call signal on this channel will cause the call light push button to flash. The flash rate is 2 to 5 times a second. The call signal itself is a 20kHz signal
UPC: 800549425124
In the Box
Telex CM-300L Console Mount User Station w/ an A5F Headset Connector
  • 3-Year Warranty
  • Table of Contents
    • 1Description
    Input Voltage TW mode: 18-35 V DC
    LP option: 15-35 V DC
    Battery: 12-35 V DC (reduced performance)
    Current Quiescent
    23 milliamperes ±10%
    33 milliamperes ±10%
    Operating 25 Ω headphones
    37 milliamperes ±10%
    45 milliamperes ±10%
    Operating 25 Ω headphones + call light
    60 milliamperes ±10%
    Impedance across line: 10,000 Ω, minimum
    Environmental Conditions Temperature
    Operating: 32-140°F (0-60°C)
    Storage: -40-185°F (-40-85°C)
    Humidity
    Operating and storage: 5-95% non-condensing
    Noise One unit: -75 dBu
    Ten units: -67 dBu
    Panel Microphone Preamp Microphone preamplifier
    Input impedance: 470 Ω/dynamic mic
    Source impedance: 200 Ω, nominal
    Maximum input level: 150 millivolts
    Frequency response: 100Hz-10kHz ±3 dB (-54 dBu input)
    Limiter range: 30 dB
    Carbon mic excitation current: 10 millliamperes, nominal
    Source Current source
    Transfer ratio: 3.3 milliamperes/volt=3.3 millisiemens
    Output: ±5 milliamperes into 200 Ω = ±1 volt peak, nominal
    Headphone Amp Voltage gain: 34 dB
    Output voltage: 8 volts peak-to-peak into 25 ½
    Output power: ½ watt peak into 25 Ω
    Frequency response: 150Hz-8kHz ±3dB
    Headphone impedance range: 25-600 Ω (600-2000 with reduced levels)
    Note: Do not use headphones with impedance less than 25 Ω.
    Sidetone adjustment range: -20dB to full on
    Call Light Levels Signaling frequency: 20,000Hz ±100Hz
    Flashing rate: 5Hz ±2Hz
    Connectors Headset connector
    Dynamic microphone: XLR type 4-pin female
    Carbon microphone: ¼" standard phone jack, 3-circuit
    Live connection:
    Input: XLR type 3-pin female
    Loop/external: XLR type 3-pin female
    Finish Front panel: light gray enamel paint, Federal standard 595A Color #26492Chassis: gold iridite over aluminum
    Dimensions (H x W x D) 2.8 x 6.3 x 6.4" (69.9 x 158.75 x 162.6mm)
    Weight 1.2 lb. (0.6kg)

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