JBL CSA 2120Z - 120W 2-Channel 70V/100V Power Amplifier with Master Volume Knob and RJ45 Connectors in Black Finish

The JBL Professional CSA 2120Z is a high-performance, 120W 2-channel power amplifier designed for installed sound applications where both power and efficiency are essential. Whether in commercial, industrial, or institutional settings, the CSA 2120Z provides a compact and reliable amplification solution that ensures high-quality audio delivery for a variety of installations, such as retail spaces, conference rooms, educational facilities, and fitness centers. With its robust performance and advanced technology, this amplifier is an ideal choice for distributed audio systems that require flexibility and efficiency.

Equipped with Crown's DriveCore technology, the CSA 2120Z amplifies audio with impressive reliability and minimal distortion. It offers both 70V and 100V output options, making it perfect for large installations with long cable runs or multiple speakers. This versatility allows it to seamlessly integrate into existing audio systems without the need for additional equipment. The amplifier's fanless design ensures quiet operation, and its space-saving 1U form factor is ideal for rack-mounted installations where space is limited.

The CSA 2120Z features illuminated master volume knobs for both output channels, providing clear visual feedback and making it easy to adjust settings, even in low-light environments. The inclusion of two RJ45 connectors enables the amplifier to work with JBL's CSR-V wall controller, allowing for remote volume control via CAT5 cables. This feature is particularly useful for systems with multiple zones or locations requiring centralized volume management. For input connections, the amplifier uses mono sum RCA connectors and Euroblock connectors, providing flexibility in choosing between unbalanced and balanced audio sources. The output is delivered via Euroblock connectors for secure and professional speaker connections.

Performance-wise, the CSA 2120Z offers a frequency response from 20 Hz to 20 kHz (+/-0.5 dB), ensuring accurate reproduction of both low-end and high-end frequencies. The unit's total harmonic distortion (THD) remains below 0.5% at full rated power, meaning that the amplifier delivers clean, distortion-free audio even at high volumes. With a signal-to-noise ratio of over 100 dB, the CSA 2120Z ensures quiet operation, making it an excellent choice for noise-sensitive applications. Additionally, the amplifier includes tone controls for bass (+/-10 dB at 100 Hz) and treble (+/-10 dB at 10 kHz), giving users the ability to adjust sound quality to suit the acoustics of the installation environment.

For energy efficiency, the CSA 2120Z features a sleep mode disable function that helps save power by automatically entering standby mode when no signal is detected. The unit is also Energy Star certified, ensuring low energy consumption during operation and contributing to sustainability efforts. The amplifier operates with a universal power supply that accepts AC voltages from 100 to 240V at 50/60 Hz, making it suitable for global use in various installations. The CSA 2120Z also meets HARMAN's GreenEdge environmental initiative, ensuring its energy-efficient design and minimal environmental impact.

With its versatile features, efficient design, and high-performance capabilities, the JBL CSA 2120Z is the perfect choice for professional sound installations that demand both quality and energy efficiency. Its reliability, ease of use, and flexibility make it a valuable asset for any commercial audio system.

Features

• 120W of output power per channel with 2 channels for reliable amplification in commercial audio systems
• Supports 70V and 100V distributed audio systems without the need for a separate transformer
• Compact, fanless 1U design ideal for rack-mounted installations with limited space
• Illuminated master volume knobs for easy visibility and operation in dark environments
• Supports remote volume control via JBL CSR-V module and standard CAT5 cable (sold separately)
• Euro-block style input connectors and RCA connectors for flexible audio integration
• Independent bass and treble tone controls for adjusting the audio to suit different environments
• Energy-efficient design with Crown's DriveCore technology for low power consumption and high performance
• Energy Star certified for eco-friendly operation
• Sleep mode disable function for energy savings when no signal is detected
• Frequency response: 20 Hz - 20 kHz (+/-0.5 dB)
• Total harmonic distortion (THD) < 0.5%, 20 Hz - 20 kHz for clean and distortion-free sound
• Signal-to-noise ratio: >100 dB for quiet, noise-free operation
• 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: 8.6 x 11.9 x 1.7 inches
• Net weight: 8.8 lbs, Shipping weight: 11.8 lbs

Specifications

Performance

• Rated Power: 120W
• Number of Output Channels: 2
• Insertion Loss: 1 dB maximum (70V & 100V outputs)
• Input Sensitivity: 1.4 Vrms (8 Ω Load)
• Frequency Response: 20 Hz - 20 kHz, ±0.5 dB
• Total Harmonic Distortion (THD): <0.5% @ full rated power, 20 Hz - 20 kHz
• Signal-to-Noise Ratio: >100 dB
• Input Impedance:
  • Euro Block: 20 kΩ (balanced)
  • RCA: 50 kΩ
• Maximum Input Level: +22 dBu (nominal)
• Crosstalk: >70 dB (A-weighted, 1 kHz)
• Tone Controls: Bass: +/-10 dB @ 100 Hz; Treble: +/-10 dB @ 10 kHz
• Nominal AC Line Voltages: 100-240V, 50/60 Hz
• Minimum Load Impedance:
  • Low-Z 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

Physical

• Net Weight: 8.8 lbs
• Dimensions: 8.6 x 11.9 x 1.7 inches
• Shipping Weight: 11.8 lbs