The Crest Audio CA4 Professional Power Amplifier is designed to achieve unsurpassed sonic performance and long-term reliability— even when operating under extreme stress—in touring orfixed installation applications. Absolute sonic accuracy is the hallmark of every Crest amplifier. Bass is solid and defined to the limits of audibility, with ample current reserves delivered by an “over-engineered” power supply and advanced Class AB output circuit design. Wide-bandwidt output devices assure detailed, transparent high frequency response. And, thanks to Crest’s exclusive IGM circuit, the CA4 will drive 2 ohm loads safely without compromise in performance.
Features
- Crest’s legendary “overbuilt” power supply
- Toroidal power transformer
- Latest generation of high-speed, wide-bandwidth output devices
- Twin tunnel cooling with back-to-front air flow
- Dual, variable speed DC fans
- Massive, extruded aluminum heat sinks
- Balanced XLR and 1/4-inch (TRS) inputs
- 5-Way binding post outputs or Speakon™ connectors (market dependent)
- Stereo/parallel/bridged mono mode selector switch
- Ground lift switch
- TourClass® protection circuits
- Recessed, stepped attenuators
- Front panel circuit breaker switch
- Modular construction
Specifications
- Max RMS Output Voltage: 58 V / Channel
- Peak Output Voltage: 82 V / Channel
- Frequency Response: 20 Hz - 20 kHz, -3dB @ 135 Hz (+0 / -0.3dB, 1W / 8 Ohm)
- Power Bandwidth : 20 Hz - 20 kHz, -0.9dB /+.5dB (rated power at 4 ohm, 1% THD+N)
- THD=N: <0.01% (rated power at 4 Ohm, 1kHz)
- SMPTE IMD: <0.01% (rated power at 8 Ohm, 60Hz & 7kHz)
- Damping Factor: 550:1 (10 - 400Hz at 8 Ohm)
- Input Sensitivity: 0.775V standard
- Voltage Gain : X61 standard
- Input Impedance: >20k Ohm Balanced / >10k Ohm Unbalanced
- Class: AB
- Input Connectors: Female XLR (Pin 2+, dealer configurable for pin 3+), TRS (tip+)
- Output Connectors: 5-way binding posts or Speakon Connectors
- Power Supply: 100V-240V, 50-60Hz
- Idle Current Draw 120V: 1.4A
- 1/8 Power Draw: 6.8A (typical music, 120V / 4 Ohm)
- 1/3 Power Draw: 10A (continuous music, 120V / 4 Ohm)
- Max. Current Draw: 15A (circuit breaker rating, 120V / 4 Ohm)
- Thermal Emissions: 2030 BTU/hr (1/8 power, 4 Ohm), 2726 BTU/hr (1/3 power, 4 Ohm)
- Cooling: Back to Front via 2 rear panel mounted variable speed DC fans with removable filters
- Dimensions: 3.5" H x 19" W x 18" D