Specifications

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Clear-Com Encore
TM
KB-702, KB-702GM, KB-701 Remote Speaker Stations
dBu is an absolute measurement. 0 dBu is
referenced to 0.775 volts RMS
Panel Microphone Input (KB-702GM)
Input Type: Electret
Input Impedance: >=2KΩ
Mic Limiter Threshold: -2dBu ±3dB
Mic Limiter Range: >= 15dB
Headset Microphone Input
Input Type: Dynamic
Input Impedance: >= 1KΩ
Mic Limiter Threshold: -2dBu ± 3dB
Mic Limiter Range: >= 15dB
Program Line Input
Maximum Level before
Clipping: >= 20dBu
Input Impedance: >= 5KΩ
Headset Output
Load Impedance: >= 8Ω
Output Impedance: <= 25Ω
Output Limiter Threshold: +5dBu ± 3dB
Maximum Output Level
before Distortion: >= 17dBu
Speaker Output
Load Impedance: >= 4Ω
Max Output Level before
1% Distortion: 20dBu ± 2dBu
Party Line Output
O Noise: < -74dBu
Output Impedance: >10KΩ
Party Line Input
Crosstalk: < -60dB
Max level before Clipping : >= 12dBu
Sidetone Null Capability
(KB-702GM only): > 25dB
Frequency Response
Panel Mic - Party Line
(KB-702GM only): 300 - 16KHz ± 3dB
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
Panel Mic - Party Line
(KB-702GM only): <= 0.5%
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
Panel Mic - Party Line
(KB-702GM only): < -65dBu
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
Panel Mic - Party Line
(KB-702GM only): >= 37dB
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 (KB-702GM)
(1) Panel /headset mic switch
(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
(1) VOX control
(1) VOX indicator
Front Panel Controls & Indicators (KB-702)
(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 - 122˚F (0 - 50˚C)
Dimensions
8.25 in. W x 4.5 in. H x 1.75 in. D
(210 mm x 114 mm x 44 mm)
Weight
KB-702 0.99 lbs. (0.45 Kg)
KB-702GM 1.1 lbs. (0.50 Kg)
Program Line Input
Maximum
Level before Clipping:
>= 20dBu
Input Impedance: >= 5KΩ
Speaker Output
Load Impedance: >= 4Ω
Max Output L
evel before
1% Distortion: 20dBu ± 2dBu
Party Line Output
O Noise: < -74dBu
Output Impedance:
>10KΩ
Party Line Input
Crosstalk: < -60dB
Max level before Clipping: >= 12dBu
Frequency Response
Program Input - Speaker Out: 200 - 18KHz ± 3dB
Party Line - Speaker Out: 200 - 18KHz ± 3dB
Max Distortion
Program Input - Speaker Out: <= 0.5%
Party Line - Speaker Out: <= 0.5%
Noise
Program Input - Speaker Out: < -60dBu
Party Line - Speaker Out: < -50dBu
Max Gain
Program Input - Speaker Out: >= 24dB
Party Line - Speaker Out: >= 40dB
Power
Input Voltage Range: 20-30 VDC
Input Current (Idle): <= 90mA
Input Current (Max): <=110mA
Internal Connectors and Jumpers
Intercom: Line Five terminal
connector
Program Input: Three terminal
connector
Option Switches: Three DIP switches
Front Panel Controls & Indicators
(1) Program level control
(1) Intercom level control
(1) Talk button
(1) Call button
(1) Integral microphone
Environmental
32 - 122o F (0 - 50o C)
Dimensions
8.5 in. W x 4.5 in. H x 1.75 in. D
(210 mm x 114 mm x 44 mm)
Weight
1.04 lbs. (0.47 Kg)
Notice About Specications
While Clear-Com makes every attempt to maintain the
accuracy of the information contained in its product
manuals, that information is subject to change without
notice. Performance specications included in this manual
are design-center specications and are included for
customer guidance and to facilitate system installation.
Actual operating performance may vary.
Technical Specications, KB-701 Speaker Station
Technical Specications, KB-702/KB-702GM Two-channel Speaker Stations:
26