2-Channel Remote Speaker Station with Gooseneck Mic Connector

  • Gooseneck microphone connector with VOX circuitry
  • 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
Item Part Number:


The KB-702GM remote speaker station permits the user to select between two channels of partyline communications, with the ability to talk and/or listen on the selected channel, like the KB-702 but adds a gooseneck mic connector and VOX circuitry.

Note: Access the Encore Power Supply Calculator to estimate power requirements for analog partyline systems.

Technical Specifications

Panel Microphone Input

Input Type: Electret

Input Impedance: >=2K

Mic Limiter Threshold: -2dBu ±3dB

Mic Limiter Range: >= 15dB

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

Sidetone Null Capability: > 25dB

Frequency Response

Panel Mic – Partyline: 300 – 16kHz ± 3dB

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

Panel Mic – Partyline: <= 0.5%

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%


Panel Mic – Partyline: < -65dBu

Headset Mic – Partyline: < -70dBu

Program Input – Headset Out: < -60dBu

Program Input – Speaker Out: < -60dBu

Partyline – Headset Out: < -50dBu

Partyline- Speaker Out: < -50dBu

Max Gain

Panel Mic – Partyline: >= 37dB

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: 20-30V DC

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 Jumper 3: 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)


1.1lbs (0.50kg)

Associated Products

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