Crest Audio CA 18 Power Amplifier

The Crest Audio CA18 Power Amplifier is a high-performance, professional-grade amplifier designed to deliver unmatched sound clarity and long-term reliability — even under extreme operating conditions. Part of Crest Audio’s renowned CA Series, the CA18 is engineered for both touring and permanent installations, offering exceptional power output and precision performance.

Ideal for driving high-powered subwoofers and passive full-range systems, the CA18 is celebrated for its sonic accuracy, robust construction, and cutting-edge protection technologies. Its overbuilt design ensures dependable performance in the most demanding audio environments.

Key Features

• High Power Output:
  Designed for high-demand applications with the capability to drive heavy loads without sacrificing clarity or performance.

• Absolute Sonic Accuracy:
  Delivers solid, defined bass with transparent highs, thanks to wide-bandwidth output devices and Crest’s advanced Class H circuitry.

• Overbuilt Power Supply:
  Ensures ample current reserves for sustained high output, providing reliable performance under stress.

• Toroidal Power Transformer:
  Delivers superior efficiency and low noise for consistent, high-quality amplification.

• Twin-Tunnel Cooling System:
  Back-to-front airflow and dual variable-speed fans maintain optimal operating temperatures.

• Balanced Connectivity:
  Balanced XLR and 1/4-inch TRS inputs for low-noise signal transfer.

• Flexible Output Options:
  Speakon™ connectors or two pairs of 5-way binding posts (market dependent).

• Advanced TourClass® Protection Circuits:

  • ACL (Active Clip Limiting) protects speakers by gently reducing gain at clip threshold.

  • IGM (Instantaneous Gain Modulation) monitors speaker load to safely drive 2Ω impedances.

  • AutoRamp gradually increases gain to the set level upon startup.

  • Thermal, short-circuit, DC voltage, turn-on/off transient, current inrush, and sub/ultrasonic input protections.

• User-Friendly Controls:
  External switches for stereo/parallel/bridged mono mode, Pin 2/3 hot (+), ground lift, gain/input sensitivity, recessed stepped attenuators, and front-panel circuit breaker.

• Rugged Construction:
  Modular design with massive extruded aluminum heat sinks and a powder-coated steel chassis ensures durability in both touring and fixed installations.

Technical Specifications (Selected)

• Frequency Response: 20 Hz – 20 kHz

• Total Harmonic Distortion: <0.1%

• Signal-to-Noise Ratio: >105 dB

• Cooling: Twin tunnel back-to-front airflow, dual variable-speed fans

• Dimensions: Industry-standard rack size

• Weight: Durable and transport-ready design

Applications

• Live Sound Reinforcement: Perfect for large concerts, touring rigs, and outdoor festivals.

• Permanent Installations: Ideal for theaters, auditoriums, churches, and clubs.

• High-Power PA Systems: Excellent for driving subwoofers and high-performance speaker systems.

• Professional Touring: Reliable performance in demanding road conditions.

Advantages & Benefits

• Exceptional audio clarity and accuracy for demanding environments.

• Rugged, overbuilt design for reliability in touring and installations.

• Advanced protection circuitry ensures longevity of amplifier and speakers.

• Flexible operating modes for diverse audio system configurations.

• Efficient cooling for prolonged high-power operation.

• Exceptional value for professional-grade amplification.