JBL Crown CSMA 180/1120 Mixer Amplifier

Product Type:

Brand: JBL

SKU: CSMA 180/1120

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. 

  • 4 inputs with 1 output of 80 or 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


Form Factor/Type Tabletop
Number of Channels 4 Input / 1 Output
Power Rating 4 Ohms / 8 Ohms:
80 W Peak per Channel (1 kHz, 0.5% THD)
10 W RMS per Channel
Load Impedance / Voltage 4 Ohms (Minimum)
70 V (60 Ohms Minimum)
100 V (120 Ohms Minimum)


Frequency Response Amplifier:
20 Hz to 20 kHz ±2 dB (Low-Z)
80 Hz to 15 kHz ±2 dB (70/100 V)
Line Output:
20 Hz to 20 kHz ±1 dB
Input Sensitivity Mic:
3 mVrms
775 mVrms
300 mVrms
I/O Impedance Mic Input:
400 Ohms
Line Input:
20 Kilohms (Balanced)
RCA Input:
50 Kilohms
Output Level Line Output:
5 Vrms (10-Kilohm Load)
Insertion Loss 1 dB Maximum
SNR > 90 dB
THD < 0.5% (Main Output, 20 Hz to 20 kHz)
0.05% (Line Output)
Crosstalk -70 dB (1 kHz)

Signal Processing

EQ 2-Band


Audio I/O 1 x Euroblock 5-Pin Amplifier Output
1 x Euroblock 3-Pin Aux/Line Output
3 x Euroblock 3-Pin Mic/Line Input
3 x Stereo RCA Unbalanced Input
1 x Euroblock 5-Pin Priority Input
Other I/O 1 x RJ45 Remote/Volume
Phantom Power 27 VDC


AC Input Power 100 to 240 VAC, 50 / 60 Hz
AC Power Connector 1 x IEC


Operating Temperature 32 to 95°F / 0 to 35°C
Storage Temperature -4 to 185°F / -20 to 85°C
Operating Humidity 0 to 95% (Non-Condensing)
Dimensions 8.6 x 1.7 x 11.9" / 21.9 x 4.3 x 30.3 cm
Weight 6.8 lb / 3.1 kg

Packaging Info

Package Weight 10.14 lb
Box Dimensions (LxWxH) 16.45 x 12.15 x 5"

Part Code


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