Overview
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
Specifications
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%
Noise
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
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
Environmental
32° – 122°F (0° – 50°C)
Dimensions
4.5 x 8.25 x 1.75in (HxWxD)
(114 x 210 x 44mm)
Weight
0.99lb (0.45kg)
