JBL CSA 280Z - 80W 2-Channel 70V/100V Power Amplifier with Master Volume Knob and RJ45 Connectors in Black Finish

The JBL Professional CSA 280Z is an 80W 2-channel power amplifier designed for installed sound applications, offering both powerful performance and energy-efficient operation. Ideal for commercial settings such as retail environments, educational institutions, fitness centers, and corporate offices, the CSA 280Z is a reliable solution for applications requiring high-quality audio amplification in a compact design. Using Crown's DriveCore technology, this amplifier delivers outstanding sound clarity and efficiency while maintaining minimal operational costs. The CSA 280Z supports both 70V and 100V output configurations, making it versatile for distributed audio systems, even across long distances or with numerous speakers.

Compact and designed with space efficiency in mind, the CSA 280Z features a fanless, 1U rackmountable design, making it an excellent choice for installations where space is limited. Despite its compact size, the amplifier is capable of delivering 80W per channel, ensuring ample power for various commercial audio applications. The unit's robust construction and fanless design ensure that it runs quietly, which is particularly advantageous for noise-sensitive environments like conference rooms or offices.

The CSA 280Z is equipped with illuminated master volume knobs for each channel, providing intuitive control and easy visibility, even in low-light conditions. These knobs offer convenient manual control over the output levels, ensuring that users can make adjustments quickly and efficiently. Additionally, the amplifier includes two RJ45 connectors, enabling remote volume control using JBL's CSR-V wall control module (sold separately). This feature is especially useful for multi-zone or multi-room installations, providing centralized control over audio levels across various areas.

For input connectivity, the CSA 280Z offers both mono sum RCA connectors and Euroblock connectors, providing flexibility for different audio sources and installation requirements. The amplifier's outputs are provided via Euroblock connectors, ensuring secure and professional-grade connections to speakers. The unit's versatile input and output configurations, combined with independent tone controls for bass (+/-10 dB at 100 Hz) and treble (+/-10 dB at 10 kHz), allow for easy integration into any audio system and provide the ability to fine-tune the audio to suit different acoustic environments.

The CSA 280Z is designed with energy efficiency in mind, offering an energy-saving sleep mode disable function that reduces power consumption when no signal is detected. In addition, it meets Energy Star certification, ensuring that it operates with minimal energy consumption without compromising performance. The unit is powered by a universal switch-mode power supply that can accept AC voltages from 100 to 240V at 50/60 Hz, providing compatibility with global power standards and making it suitable for international installations.

With a frequency response range of 20 Hz to 20 kHz (+/-0.5 dB) and a signal-to-noise ratio greater than 100 dB, the CSA 280Z delivers clear, distortion-free audio across a wide range of frequencies. Total harmonic distortion (THD) is kept under 0.5% at full rated power, ensuring clean, natural sound even at higher output levels. This amplifier is built to handle a wide variety of audio signals while maintaining high-fidelity performance, making it a reliable choice for professional audio systems.

In addition to its performance and versatility, the CSA 280Z is designed with durability and reliability in mind. It includes overheat protection and is manufactured to HARMAN's GreenEdge environmental initiative, ensuring that it adheres to strict environmental standards. With its combination of high power output, energy efficiency, and easy-to-use features, the CSA 280Z is an ideal solution for a variety of professional audio installations.

Features

• 80W of output power per channel with 2 channels for reliable amplification in commercial sound systems
• Supports 70V and 100V distributed audio systems without the need for a separate transformer
• Compact, fanless 1U design for space-saving, silent operation in rack-mounted installations
• Illuminated volume knobs for easy visibility and control in low-light 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 customizing sound to match room acoustics
• Energy-efficient design with Crown's DriveCore technology for low power consumption and high performance
• Energy Star certified for eco-friendly operation and reduced energy costs
• Sleep mode disable function to conserve energy 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, distortion-free sound
• Signal-to-noise ratio: >100 dB for quiet, noise-free audio
• 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: 7.5 lbs, Shipping weight: 10.5 lbs

Specifications

Performance

• Rated Power: 80W
• 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: 60 Ω
  • 100V Output: 120 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