AB-120

dBu is an absolute measurement. 0dBu is referenced to 0.775 volts RMS

Headset Microphone Input

Input Type: Dynamic, Electret

Input Impedance: 1kΩ 

Max Input Level: -60dBu to -40dBu switchable

Headset Output

Load Impedance: >= 4Ω 

Output Impedance: 47Ω 

Output Limiter Threshold: -4dBu, + 3dB

Max Output Level Before Distortion: -4dBu

Partyline Output

Off Noise: <-80dBu

Output Impedance: >10kΩ 

Maximum Output: -4dBu

Partyline Input

Maximum Level Before Clipping: +3dBu

Sidetone Null Capability: >25dB

Frequency Response

Dynamic Mic - Partyline: 40Hz - 22kHz, + 3dB

Dynamic Mic - Line Out: 20Hz - 22kHz, + 3dB

Dynamic Mic - 4-Wire Out: 100Hz - 22kHz, + 3dB

IFB Input - Headset Out: 100Hz - 22kHz, + 3dB

Partyline - Headset Out: 150Hz - 22kHz, + 3dB

Max Distortion Dynamic Mic - Partyline: <0.1%

Dynamic Mic - Line Out: <0.05%

IFB Input - Headset Out: <0.5%

Partyline - Headset Out: <0.1%

Noise

Dynamic Mic - Partyline: <-75dBu

Dynamic Mic - Line Out: <-85dBu

IFB Input - Headset Out: <-65dBu

Partyline - Headset Out: <-65dBu

Max Gain

Dynamic Mic - Partyline: 41dB + 3dB

Dynamic Mic - Hot Mic Out: 40dB + 3dB

IFB Input - Headset Out: 40dB/22dB (switchable) + 3dB

Partyline - Headset Out: 34dB + 3dB

Rear Panel Connectors

Headset: XLR-6F-Switchcraft pin layout*

Compatible with balanced microphone headsets such as CC-400-X6.

Microphone Out: XLR-3M

Intercom: XLR-3M/F

IFB: XLR-3F

Power: 2.1mm jack

Front Panel Controls and Indicators

(1) Mute button

(1) Mute indicator LED (red)

(1) Talk back button

(1) Talk back indicator LED (green)

(1) Interrupt level control

(1) Non-Interrupt level control

Power

Intercom/IFB Voltage: 25 - 30V DC

Current: 100mA idle, 120mA max

DC Adapter: 100 - 240V

Voltage: 30V @ 0.5A

Environmental

32° – + 122°F (0° – + 50°C)

Dimensions

6 x 3 x 8in (WxHxD)

(152 x 76 x 203mm)

Weight

2.0lbs (0.9kg)

*IMPORTANT: XLR Connector Compatibility

Clear-Com products featuring 6-pin XLR connectors utilize the Switchcraft XLR pin layout. Compatible connectors are available from manufacturers, such as Switchcraft and Neautrik, yet compatibility must be verified. Neutrik 6-pin XLR connectors must include “S” in the part number to ensure compatibility.