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 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 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 (H x W x D) | 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" |
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