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JBL Commercial Products

CSMA 240/280/2120

The JBL® CSMA series of Mixer-Amplifiers are a professional tool with a sleek industrial look that is designed and built for commercial sound applications. Utilizing Crown’s DriveCore technology enables significantly reduced size and weight – all mixer/amps are highly efficient, fanless and just 1U rack space high. There are both single channel and two channel models with four or eight mixer channels, respectively.

The CSMA mixer/amps offer unmatched ease of use, with a clean, front panel featuring only volume controls for each channel, master volume adjustment, adjustable bass and treble controls and a power switch. All the volume controls are surrounded by an illuminated ring, making them easy to see and operate in darkened environments. The amplifier can drive 8 ohm and 4 ohm loads and can be used with 70V and 100V distributed audio systems without the need for a separate transformer. In addition to balanced mic/line inputs, unbalanced RCA inputs and speaker connections, all units include RJ45 connectors for use with JBL CSR-V in-wall volume controls. All models feature a universal power supply which enables the ability to accept AC voltages from 100 to 240 VAC, 50/60Hz.

JBL Commercial mixer/amps are manufactured under HARMAN’s GreenEdge™ environmental initiative, conforming to lead-free RoHS standards and utilizing recycled copper, aluminum and steel, an energy-saving powder coat finishing process and other environmentally-conscious manufacturing processes. Their highly efficient DriveCore design reduces power consumption and yields much more efficient operation – up to 80 percent more efficient than previous designs. All models carry a 3-year no-fault transferable warranty.

Energy Star Certification

Features
  • 8 inputs with 2 outputs of 40,80, 120-watts of power
  • Ideal for commercial and industrial use
  • Fanless, space-saving 1U design
  • Sleek industrial look with illuminated rings, making them easy to see and operate
  • Euro-block type mic/line input connectors and output connectors
  • Independent Bass and Treble controls for each output channel
  • Supports 70V and 100V distributed audio systems without the need for a separate transformer
  • Remote volume control capability using JBL CSR-V module and standard Ethernet cable
  • Priority muting
  • Configurable output routing
  • Utilizes Crown’s DriveCoreTM technology providing excellent audio performance with high efficiency
  • Manufactured to lead-free ROHS standards, utilizing recycled metals, and using an energy-saving powder coat process
  • Includes rack mounting kit
  • Three-Year, No-Fault, Fully Transferable Warranty completely protects your investment
  • Energy Star® Certified
Specifications
Output 120W @ 4/8 Ohms (1kHz Power, THD+N<0.5%)
Frequency Response +/- 1dB (@1W into 4 or 8 Ohms)
Load Impedance Stable from 2 - 16 Ohms
Sensitivity 1.4Vrms
Signal to Noise Ratio -weighted
Input Impedance Balanced 20K Ohms/Unbalanced 10K Ohms
Max Input +20dBu Typical
Dimensions 1.7" x 17.2" x 11.9" (43.3 mm x 436.9 mm x 303.4 mm)
Shipping Weight 240: 13.9 lbs (6.3 kg); 280: 15.2 lbs (6.9 kg); 2120: 15.5 lbs (7.0 kg)
Documentation
  Version Language Size Uploaded
Application Guides
CSMA 240/280/2120 Application Guide-English
en updated: Nov 22, 2020
  en  1.05 MB Nov 22, 2020
CSMA 240/280/2120 Application Guide-Chinese
zh updated: Nov 21, 2020
  zh  3.53 MB Nov 21, 2020
Cut Sheets
CSMA 240/280/2120 Cut Sheet-English
en updated: Nov 22, 2020
  en  1.66 MB Nov 22, 2020
CSMA 240/280/2120 Cut Sheet-Chinese
zh updated: Nov 21, 2020
  zh  17.9 MB Nov 21, 2020
Extras
CSMA_Thermal_Dissipation_Chart.pdf
updated: Nov 22, 2020
    42.2 KB Nov 22, 2020
Owners Manuals
CSMA 240/280/2120 Owner's Manual-Chinese
zh updated: Nov 21, 2020
  zh  3.08 MB Nov 21, 2020
CSMA 240/280/2120 Owner's Manual-English
en updated: Nov 23, 2020
  en  2.89 MB Nov 23, 2020
CSMA 240/280/2120 Owner's Manual-Spanish
es updated: Nov 21, 2020
  es  2.5 MB Nov 21, 2020
CSMA 240/280/2120 Owner's Manual-German
de updated: Nov 21, 2020
  de  2.48 MB Nov 21, 2020
    78.9 KB Oct 22, 2020
    793 KB Aug 27, 2015
    855 KB Aug 27, 2015
GreenEdge QRG
updated: Aug 27, 2015
    1.1 MB Aug 27, 2015
JBL Commercial Series Gatefold
updated: Apr 02, 2020
    1.31 MB Apr 02, 2020
CSMA Application Guide - Restaurant
updated: Apr 02, 2020
    858 KB Apr 02, 2020
CSMA Application Guide - Education
updated: Apr 02, 2020
    578 KB Apr 02, 2020
CSMA Application Guide - Coffee Shop
updated: Apr 02, 2020
    625 KB Apr 02, 2020
CSMA Quick Reference Guide
updated: Aug 27, 2015
    673 KB Aug 27, 2015
JBL Commercial Brochure
updated: Apr 02, 2020
    1.64 MB Apr 02, 2020
News & Reviews
Support/FAQs