The 2RU Ci 20 x 8 Multi-Channel Power Processing Amplifier from Crest Audio is designed to drive low-impedance or 70V speaker loads without bridging between channels. Bridged operations are supported for additional power into 8Ω loads or 140V operation. This amplifier features 8 channels. Channels may be selected as low impedance or 70V individually. The 20 x 8 amplifier is protected by Tour Class protection. It has front and rear panel indicators for amplifier status. There is one controlled-voltage input per channel standard, and one fault relay per channel standard. This amplifier has a sequential turn-on standard, Euro-style input connectors, and barrier strip output connectors. The module bay is provided to input Nx module bay accessories for full amplifier control and monitoring via NexSys 4 software or MediaMatrix product and digital audio distribution.
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Crest Audio Ci 20 x 8 Multi-Channel Power Processing Amplifier (2RU)
Crest Audio Ci 20 x 8 Overview
Individual channels may be selected as low impedance or 70V
Tour Class protection
Front and rear panel indicators for amplifier status
Variable-speed fan
Sequential turn-on standard
Euro-style input connectors
Barrier strip output connectors
One controlled-voltage input per channel standard
One fault relay per channel standard
Module bay provided to input Nx module bay accessories for full amplifier control and monitoring via NexSys 4 software or MediaMatrix product and digital audio distribution
2RU rackmountable
Crest Audio Ci 20 x 8 Specs
| Power Rating | Dual: 8 Ω: 200 W 70 V: 200 W Bridged: 16 Ω: 400 W 140 V: 400 W |
| Damping Factor | 200:1 @ 8 Ω (20 - 100 Hz) |
| Input CMRR | > 60 dB @ 1 kHz |
| Input Sensitivity | @ 70 V: 1.14 V for full rated output power (70 V switch selected) @8 Ω: 1.0 V for full rated output power (Low Z switch selected) |
| Input Impedance | Balanced: > 20 kΩ Unbalanced: >10 kΩ |
| Hum & Noise | > -97 dB, A-weighted below rated power @ 8 Ω |
| Crosstalk | > -60 dB below max rated power, 1 kHz |
| Frequency Response | 5 Hz to 20 kHz, ± 1 dB |
| Power Bandwidth | 20 Hz to 20 kHz, ± 1 dB @ 4 Ω, 1% THD |
| Total Harmonic Distortion/Noise | <0.02% @ rated power @ 70 V, 1 kHz |
| Connectors | 1 x RJ45 neutrik, CobraNet data port 1 x 4-pin Euro-style, channel 1 & 2 CV input 1 x 4-pin Euro-style, channel 3 & 4 CV input 1 x 4-pin Euro-style, channel 5 & 6 CV input 1 x 4-pin Euro-style, channel 7 & 8 CV input 1 x 6-pin Euro-style, channel 1 & 2 Fault output 1 x 6-pin Euro-style, channel 3 & 4 Fault output 1 x 6-pin Euro-style, channel 5 & 6 Fault output 1 x 6-pin Euro-style, channel 7 & 8 Fault output 8 x 3-pin Euro-style, channel 1 to 8 balanced input 8 x 2-pin speaker terminal, channel 1 to 8 speaker output 1 x 3-pin Euro-style, power sequence input 1 x 3-pin Euro-style, power sequence output 1 x EIC 3-prong power connector, input |
| Controls | Front Panel: 1 x On/Off/Remote power switch Rear Panel: 8 x Stepped attenuators 1 x 70 V/Low Z switch per channel 1 x Dual/Bridged switch per channel pair 1 x Circuit breaker 1 x Edit pushbutton 1 x Select pushbutton 1 x Function pushbutton 1 x Up pushbutton 1 x Down pushbutton |
| Indicators | Front Panel: 8 x Signal 8 x ACL/IGM 8 x Fault 8 x Mute 1 x Active 1 x Low battery Rear Panel: 8 x Signal 8 x ACL/IGM 8 x Fault 8 x Mute 1 x Data 1 x Link 6 x Function 1 x Active 1 x Low battery |
| Cooling | Front to side via variable speed fan |
| Current Draw | Circuit Breaker Rating (120 / 230 VAC): 12 A / 6 A 1/8 Power, 70 V: 4.0 A 1/3 Power, 70 V: 8.0 A Idle: < 2.0 A BTU/hr @ 1/3 Power, 70 V: 947 |
| Dimensions | 3.5 x 19.0 x 17.3" (8.9 x 48.3 x 43.9 cm) + 1.25" (3.18 cm) rack ears |
| Weight | 48.0 lb (21.8 kg) |
Packaging Info
| Package Weight | 42 lb |
| Box Dimensions (LxWxH) | 24.5 x 24.5 x 6" |
Crest Audio Ci 20 x 8 Reviews
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