Crest Audio CA12 Power Amplifier

Crest Audio CA12 Power Amplifier
The CA12 professional power amplifier is designed to achieve unsurpassed sonic performance and long-term reliability--even when operating under extreme stress--in touring or fixed installation applications.

application
The CA series provides tremendous value in proven amplifier technology. CAs form the backbone of discriminating rental systems and high-power club installations world-wide. Auditoriums, churches, regional tour sound, and mobile DJs are all ideal candidates for the CA series´ combination of value and sonic quality.

design focus
The CA series design provides economical access to the premium sound quality of the Crest Audio Pro series. Professional power-handling capabilities and exceptional low-end response make this amplifier an ideal choice for installations and touring applications that demand the finest audio quality.

features

• Crest Audio'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 jumper
• TourClass® protection circuits:
  • ACL (active clip limiting) prevents speaker damage with gentle gain reduction at clip threshold
  • IGM (instantaneous gain modulation) monitors connected loads to detect conditions that may overstress output devices
  • AutoRamp gradually increases gain to attenuator setting level when amplifier is turned on
  • TourClass also includes comprehensive thermal management; and short circuit, DC voltage, turn-on/off transient, current inrush and sub/ultrasonic input protection
• input sensitivity selection
• recessed, stepped attenuators
• front panel circuit breaker switch
• modular construction
• five-year warranty

stereo power 8 ohms
1kHz, 0.01% THD+N: 700W
20Hz-20kHz, 0.1% THD+N: 650W

stereo power 4 ohms
1kHz, 0.01% THD+N: 1200W
20Hz-20kHz, 0.1% THD+N: 1100W

stereo power 2 ohms
1kHz, 0.01% THD+N: 1400W
20Hz-20kHz, 0.1% THD+N: 1100W

bridged mono power 8 ohms
1kHz, 0.01% THD+N: 2400W
20Hz-20kHz, 0.1% THD+N: 2200W

bridged mono power 4 ohms
1kHz, 0.01% THD+N: 2800W
20Hz-20kHz, 0.1% THD+N: 2200W

• max RMS output voltage: 90V, each channel
• peak output voltage: 126V, each channel
• frequency response: (+0/-0.3dB, 1W/8 ohms) 20Hz-20kHz, -3dB @ 135kHz
• power bandwidth: (rated power @ 4 ohms, 1% THD+N) 20Hz-20kHz, -.23dB/+.85dB
• TourClass® protection: ACL, IGM, AutoRamp, short circuit, DC voltage, turn-on/off transient, current inrush, sub/ultrasonic input
• THD+N: rated power @ 4 ohms, 1kHz <0.01%
• SMPTE IMD: rated power at 8 ohms, 60Hz & 7kHz: <0.01%
• damping factor: 800:1, 10-400Hz @ 8 ohms
• input CMRR: >-60dB @ 1kHz
• input sensitivity: rated power at 8 ohms: .775V standard (options: 1.87V, 3.74V)
• voltage gain: X97.5 standard (options: X40, X20)
• input impedance: >20 kohms balanced/>10kohms unbalanced
• hum and noise: -105dB, A-weighted, full power, 4 ohms
• crosstalk: >-60dB, A-weighted, full power, 4 ohms
• class: H
• input connectors: (per channel) female XLR (pin 2+, dealer config. for pin 3+), TRS (tip+)
• output connectors: (per channel) 5-way output binding posts or Speakon connectors (market dependent)
• filter storage: 140,000µF
• power supply: factory configured at 100V-240V, 50-60Hz
• idle current draw: (120V) 2.8A
• 1/8 power current draw: (typical music, 120V/4 ohms) 10.5A
• 1/3 power current draw: (continuous music, 120V/4 ohms) 23.0A
• max current draw: (circuit breaker rating, 120V/4 ohms) 30A
• thermal emissions (1/8): (1/8 po