JBL / CSMA 1120

The CSMA1120 is a power amplifier with a 4-channel mixer function. It features mic/line input jacks with signal level switching and 27V phantom power supply, as well as a line input jack for direct connection to a CD player or other device. It also supports high-impedance connections and features a high-pass filter to prevent speaker transformer saturation.

This all-in-one power amplifier with built-in mixer makes it easy to build a broadcasting system. Packed with a wide range of functions in a compact housing, it allows you to build a broadcasting system simply by connecting microphones and speakers. Furthermore, because it requires minimal operation, it can be operated in places without a dedicated operator, such as stores, various facilities, and work spaces, achieving high-quality sound reinforcement.

■Power Amplifier
■Number of Input Channels: 4
■Number of Output Channels: 1
■Input
　Connectors: ch1: Euroblock (balanced), ch2-4: Euroblock (balanced), RCA (unbalanced)
　Impedance: Euroblock: 400Ω (mic), 20kΩ (line), RCA: 50kΩ
　Maximum Input Level: +20dBu
　Phantom Power: (Euroblock only)
■Output
　Connectors: Euroblock
　4/8Ω: 120W
　70/100V: 120W
■Frequency Response: ±2dB (20Hz-20kHz, 4/8Ω output)
■Signal-to-Noise Ratio: 90dB or greater (A-weighted)
■THD: 0.5% or less (20Hz-20kHz, power amplifier output)
■Indicators: Signal (input/output), Clip (output), Power
■Power Supply: AC 100V, 50/60Hz
■Power Consumption: 35W (1/8 output, pink noise, 4Ω)
■Dimensions (W x H x D): 218 x 44 x 304mm (excluding protrusions)
■Weight: 3.2kg
■Accessories
3-pin Euroblock connectors x 4
5-pin Euroblock connectors x 2
Long angle bracket
Flat bracket
Front angle brackets x 2
Rear angle bracket
Rear flat bracket
Bracket fixing screw x 1
Rear bracket connecting screw x 3
Spring washers x 3
Washers x 3
Rack mount screws x 5
Rubber feet x 4 (1 sheet)
Power cord
Japanese instruction manual