Clear-Com KB-702 2-Channel Flush-Mount Speaker Station

MSRP: $520.00
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KB-702 2-Channel Flush-Mount Speaker Station

2-Channel Select Flush Mount Headset/Speaker Station Mounts in V-Box, HelixNet S-Mount, or console.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.


  • Talk/Listen from headset mic, telephone handset or push-to-talk microphone
  • Four modes of operation that are internally programmable via dip switches
  • Balanced local program input with separate level control
  • Visual and audible call signaling
  • Optional 4-wire daughter board for flexibility
  • Wall or console mountable, or optional V-Box for portable or desktop use
  • Built-in speaker



Headset Microphone Input

Input Type: Dynamic

Input Impedance: >= 1K

Mic Limiter Threshold: -2dBu ± 3dB

Mic Limiter Range: >= 15dB

Program Line Input

Maximum Level before Clipping: >= 20dBu

Input Impedance: >= 5K

Headset Output

Load Impedance: >= 8

Output Impedance: <= 25

Output Limiter Threshold: +5dBu ± 3dB

Maximum Output Level before Distortion: >= 17dBu

Speaker Output

Load Impedance: >= 4

Max Output Level before 1% Distortion: 20dBu ± 2dBu

Partyline Output

Off Noise: < -74dBu

Output Impedance: >10K

Partyline Input

Crosstalk: < -60dB

Max level before Clipping : >= 12dBu

Frequency Response

Mic – Partyline: 300 – 15kHz ± 3dB

Program Input – Headset Out: 200 – 18kHz ± 3dB

Program Input – Speaker Out: 200 – 18kHz ± 3dB

Partyline- Headset Out: 200 – 18kHz ± 3dB

Partyline- Speaker Out: 200 – 18kHz ± 3dB

Max Distortion

Headset Mic – Partyline: <= 0.5%

Program Input – Headset Out: <= 0.2%

Program Input – Speaker Out: <= 0.5%

Partyline- Headset Out: <= 0.2%

Partyline – Speaker Out: <= 0.5%


Headset Mic – Partyline: < -70dBu

Program Input – Headset Out: < -60dBu

Program Input – Speaker Out: < -60dBu

Partyline – Headset Out: < -50dBu

Partyline- Speaker Out: < -50dBu

Max Gain

Headset Mic – Partyline: 41dB ± 2dB

Program Input – Headset Out: >= 18dB

Program Input – Speaker Out: >= 24dB

Partyline- Headset Out: >= 34dB

Partyline- Speaker Out: >= 40dB


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


32° – 122°F (0° – 50°C)


4.5 x 8.25 x 1.75in (HxWxD)

(114 x 210 x 44mm)


0.99lb (0.45kg)