JBL CSMA 2120 - 120W Commercial Mixer/Amplifier with 8 Inputs and 2 Outputs in Black Finish

The JBL Professional CSMA 2120 is a robust and high-performance 120W commercial mixer/amplifier, designed to deliver clear and powerful audio for a wide range of commercial and industrial applications. With its 8 input channels and 2 output channels, the CSMA 2120 provides flexibility and control, making it ideal for use in environments such as restaurants, educational institutions, fitness centers, and retail stores. Capable of reaching a peak power output of 120W, with 15W of continuous power per channel, the amplifier ensures high-quality sound for background music, paging, and other audio needs.

Featuring a sleek, industrial design in a fanless 1U form factor, the CSMA 2120 is compact and energy-efficient, making it an excellent choice for installations where space and noise reduction are important. The unit's front panel includes illuminated volume controls for each channel, two master volume knobs, two sets of bass and treble controls, and a power switch, all designed for ease of use in both bright and dark environments. The CSMA 2120 is capable of driving both 8-ohm and 4-ohm loads, and it supports 70V and 100V distributed audio systems without the need for an external transformer, offering compatibility with a variety of speaker setups.

The mixer/amplifier offers extensive connectivity options, including euroblock type mic/line input connectors, unbalanced RCA inputs, and speaker connections for flexibility. The back panel also includes dip switches for input routing, making it easy to configure the system to meet specific needs. Additionally, the CSMA 2120 is equipped with two RJ45 connectors, allowing for remote volume control using the JBL CSR-V in-wall volume control module (sold separately), giving users the ability to manage audio levels remotely in large or complex setups.

Designed for high performance, the CSMA 2120 offers features like voice-activated ducking, which automatically reduces the background music volume during paging, and priority muting for channel one and five, ensuring that announcements always take precedence over the music. The unit also has a sleep mode that automatically powers down the system after 30 minutes of inactivity, helping save energy when the unit is not in use. With two auxiliary outputs, the CSMA 2120 allows for connection to additional amplifiers, although the master volume and tone controls do not affect the auxiliary output. Using Crown's DriveCore technology, the amplifier provides exceptional audio performance with high efficiency, ensuring reliability and clarity across the entire frequency spectrum.

Features

• 120W peak output power with 8 input channels and 2 output channels
• Ideal for commercial and industrial applications such as restaurants, schools, fitness centers, and retail stores
• Fanless, space-saving 1U design with a sleek industrial look
• Illuminated volume controls for easy operation in dark environments
• Euro-block type mic/line input connectors and unbalanced RCA inputs for flexible audio integration
• 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 (sold separately)
• Priority muting and voice-activated ducking for paging and background music control
• Two auxiliary outputs for connecting additional amplifiers with separate volume and tone controls
• Utilizes Crown's DriveCore technology for excellent audio performance and high efficiency
• Manufactured to lead-free ROHS standards and energy-efficient, using recycled metals and an energy-saving powder coat process
• Three-year, no-fault, fully transferable warranty for complete protection
• Frequency response: 20 Hz - 20 kHz (+/-2 dB) for 4/8Ω output, 80 Hz - 15 kHz (+/-2 dB) for 70V/100V outputs
• Total harmonic distortion (THD) < 0.5%, 20 Hz - 20 kHz for power amp output
• Signal-to-noise ratio: >90 dB (A-weighted)
• Phantom power: +27 VDC
• Nominal AC line voltages: 100-240V, 50/60 Hz
• Operating temperature: 0°C to 35°C, 95% humidity (non-condensing)
• Dimensions: 17.2 x 11.9 x 1.7 inches
• Net weight: 12.1 lbs, Shipping weight: 15.5 lbs

Specifications

Performance

• Max Output Power per Channel: 120W
• Continuous Power per Channel: 15W
• Insertion Loss (70V & 100V outputs): 1 dB maximum
• Number of Input Channels: 8
• Number of Output Channels: 2
• Line Output Level: 5.0 Vrms into 10 kΩ
• Input Sensitivity:
  • Mic Input: 3 mVrms
  • Line Input: 775 mVrms
  • RCA Input: 300 mVrms
• Frequency Response:
  • 4/8 Ohm Output: 20 Hz - 20 kHz, +/-2 dB
  • 70V/100V Outputs: 80 Hz - 15 kHz, +/-2 dB
  • Line Out: 20 Hz - 20 kHz, +/-1 dB
• Total Harmonic Distortion (THD):
  • Power Amp Output: <0.5%, 20 Hz - 20 kHz
  • Line Output: 0.05% typical
• Signal-to-Noise Ratio: >90 dB (A-weighted)
• Input Impedance (Nominal):
  • Mic: 400 Ω
  • Line: 20 kΩ (balanced)
  • RCA: 50 kΩ
• Phantom Power: +27 VDC
• Crosstalk: <-70 dB
• Nominal AC Line Voltages: 100-240V, 50/60 Hz
• Minimum Load Impedance:
  • Low Impedance Output: 4 Ω
  • 70V Output: 40 Ω
  • 100V Output: 80 Ω
• Operating Temperature/Humidity: 0°C to 35°C @ 95% R.H. (non-condensing)
• Storage Temperature: -20°C to 85°C

Dimensions and Weight

• Net Weight: 12.1 lbs
• Dimensions: Width: 17.2 x 11.9 x 1.7 inches
• Shipping Weight: 15.5 lbs