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JBL Pro CSMA1120 Commercial Series Single-Channel 120-Watt Powered Aud
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JBL Pro CSMA1120 Commercial Series Single-Channel 120-Watt Powered Audio Mixer/Amplifier

Original price $ 669.00 - Original price $ 669.00
Original price
$ 669.00
$ 669.00 - $ 669.00
Current price $ 669.00

JBL Pro CSMA1120 Commercial Series Single-Channel 120-Watt Powered Audio Mixer/Amplifier

The JBL CSMA 1120 is a commercial mixer-amplifier with four input channels and one output. The CSMA series mixer-amps are designed and built for commercial sound applications, such as restaurants and coffee shops, or educational applications. The CSMA 1120 is rack-mountable in a 1U half-rack space, and includes a rack-mount kit.

Product Highlights:

  • Amplified mixer for commercial audio distribution features 4 input channels and one 120-watt output channel
  • Supports 70-volt and 100-volt distributed audio systems without the need for a separate transformer
  • Stable from 4-16 ohms
  • Uses Crown's high-efficiency DriveCore™ technology to provide excellent audio performance
  • Independent bass and treble controls
  • Dip switches for input routing, phantom power, and 70/100V operation
  • Illuminated rings around buttons and dials for easy operation in darkened environments
  • Fanless, space-saving single half-width rack space (1U) design
  • Rack mounting kit included
  • Energy Star® certified
  • Product Weight: 10.1 lbs.
  • Dimensions: 8-5/8"W x 1-3/4"H x 11-15/16"D
  • Warranty: 3 Years
  • Our 30-day money back guarantee
  • MFR #CSMA1120

What's In The Box:

  • CSMA 1120 mixer/amplifier
  • 6' AC power cord (IEC 3-prong)
  • 2 Front angle brackets
  • Long angle bracket (8-1/2" length)
  • Flat bracket (5" length)
  • Rear angle bracket (7-7/8" length)
  • Rear flat bracket (4-3/4" length)
  • Five M5 x 18mm screws (with flat washers)
  • Three M5 x 10mm screws
  • 3 Split lock washers
  • 3 Flat washers
  • Twelve M3 x 6mm flathead screws
  • 4 Self-adhesive rubber feet
  • 4 Euroblock connectors (3 conductors)
  • 2 Euroblock connectors (5 conductors)
  • Operation Manual


Input Configuration

 The CSMA 1120 has 4 inputs, three of which accept 3-pin Euro-block connectors, while the other has a 5-pin Euro-block connector. These are designed for pre-built or professionally-wired balanced line 22-24 gauge cables. Three of the inputs also have RCA mono sum connectors for connecting audio devices, such as CD/DVD players. The remaining input (Channel 1) is capable of being used for Voice-activated Ducking (VOX function) and Priority Muting, and utilize the supplied 5-pin Euro-block connectors. Each of the 4 inputs has a Line/Mic switch for selecting the input gain, according to the source used.

 Output Configuration

The CSMA 1120's powered output is designed for low impedance or constant-voltage systems. The output will accept a 5-pin Euro-block connector. Pre-built or professionally-wired, high-quality two-conductor, heavy gauge speaker wire is recommended. At distances of up to 25 feet, 16-gauge wire is recommended. From 26-40 feet, you should use 14-gauge speaker wire. To drive distributed speaker systems designed to operate at 70V or 100V, the 5-pin Euro-block connectors have designated terminals for 70V, 100V and Common. For 8-ohm speakers, the + and - terminals should be used.

VOX Function

Voice-activated ducking, or the VOX function, is available on Input Channel 1. This function causes attenuation of the overall output level of the amplifier when the input level on Channel 1 reaches a set threshold. A trim pot is provided for setting the audio input level required to activate ducking. A typical usage of the VOX function is to automatically lower the background music in the room while making announcements over the audio system. After the announcement is made, the background music returns to its previously set level.

Remote Volume Control

An RJ-45 port is provided on the back panel for plugging in a CSR-V remote volume controller via Ethernet cable.

DriveCore Technology 

The JBL CSMA series utilizes DriveCore technology developed by Crown, another Harman brand. DriveCore technology integrates the amplifier drive stage into the power output stage, and fuses everything into a chip the size of a dime. This significantly reduces the size and weight of the mixer-amps into a 1U rack space.

Harman GreenEdge

JBL Commercial mixer-amps are manufactured under Harman's GreenEdge environmental initiative, utilizing recycled copper, aluminum and steel, an energy-saving powder coat finishing process, and conforming to lead-free RoHS standards and other environmentally-conscious manufacturing processes. The result is an 80% improvement in efficiency over previous models. In addition, the CSMA mixer-amplifiers are EnergyStar certified.