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Clear-Com KB-702

2-Channel Flush Mount Headset/Speaker Station
Item #:KB-702 
Available: Special Order/Direct Ship
The KB-702 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 integrated 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.
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Technical Specifications

Headset Microphone Input
Input Type: Dynamic
Input Impedance: >= 1K ohm
Mic Limiter Threshold: -2dBu ± 3dB
Mic Limiter Range: >= 15dB

Program Line Input
Maximum Level before Clipping: >= 20dBu
Input Impedance: >= 5K ohm

Headset Output
Load Impedance: >= 8 ohm
Output Impedance: <= 25 ohm
Output Limiter Threshold: +5dBu ± 3dB
Maximum Output Level before Distortion: >= 17dBu

Speaker Output
Load Impedance: >= 4 ohm
Max Output Level before 1% Distortion: 20dBu ± 2dBu

Party-line Output
Off Noise: < -74dBu
Output Impedance: >10K ohm

Party-line Input
Crosstalk: < -60dB
Max level before Clipping : >= 12dBu

Frequency Response
Headset Mic - 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
Headset Mic - 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
Headset Mic - 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
Headset Mic - 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 Mic (KB-702GM only): (1) 1/4 in. (0.64 cm) panel mounting jack
Headset: (1) XLR-4M

Front Panel Controls & Indicators
(1) Program monitor level control
(1) Sidetone null control
(1) Talk button
(1) Call button
(1) Speaker ON-OFF switch
(1) Channel select switch
(1) Speaker volume control

Environmental
32 - 122F (0 - 50šC)

Dimensions

8.25 in. W x 4.5 in. H x 1.75 in. D
(210 mm x 114 mm x 44 mm)

Weight
0.99 lbs. (0.45 Kg)