The JBL® CSMA series 280 mixer/amplifier is 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. It’s highly efficient, fanless and just 1U rack space high. The CSMA 280 mixer/amp offers unmatched ease of use, with a clean front panel featuring only volume controls for each of its four channels, 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 CSMA 280’s 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. Also features a universal power supply which enables the ability to accept AC voltages from 100 to 240 VAC, 50/60Hz.

Features

• 8 inputs, 2 outputs
• Fanless, space-saving 1U design
• 80W output per channel
• Euro-block mic/line input and output connectors
• Supports 70V and 100V installations out of the box
• Includes rack mounting kit

Specifications

• Output: 120W @ 4/8 Ohms (1kHz Power, THD+N
• Frequency Response: +/- 1dB (@ 1W into 4 or 8 Ohms)
• Load Impedance: Stable from 2 – 16 Ohms
• Sensitivity: 1.4V RMS
• Signal to Noise Ratio: -weighted
• Input Impedance: Balanced 20K Ohms/Unbalanced 10K Ohms
• Max Input: +20dBu Typical
• Dimensions: 8.2″ x 1.7″ x 7″ (209 mm x 44 mm x178 mm)
• Shipping Weight: 2.9 lbs (1.3 kg)