JBL CSMA1120 120W Professional Mixer-Amplifier 70V / 100V / 4 OhmThe JBL Commercial CSMA series of mixer/amplifiers are professional tools with a sleek industrial look, designed and built for demanding commercial sound applications. Crown’s DriveCore technology is built in, which significantly reduces size and weight, and all mixer/amps are highly efficient, fanless, and just 1U rack space high.
The CSMA1120 offers 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.
Specifications: • Output power: 120 watts (1 kHz, THD+N<0.5%) • Input sensitivity: 0.775 Vrms (8 ohms) • Phantom power: 27 VDC • Dimensions: 1.7" x 8.6" x 11.9" (43.3 x 218.5 x 303.4 mm) • Weight: 10.1 lbs. (4.6 kg).
JBL CSMA Series Manual 
California Prop 65