Crest Audio CC2800 Installation guide

SERIES
®
CC 1800/2800/4000
Power Amplifiers CC™
Power Specifi cations 8Ω stereo* 4Ω stereo*2Ω stereo*4Ω bridged**
CC 4000 800 W 1,350 W 2,000 W 4,000 W
CC 2800 595 W 965 W 1,400 W 2,800 W
CC 1800 450 W 700 W 900 W 1,850 W
* 1kHz @ <0.05% T.H.D+N / **1Khz @ <0.1% T.H.D+N
(CC 2800 shown)
FEATURE OVERVIEW:
• Toroidal power transformer
• Dual, variable speed fans on CC 2800 and CC 4000,
single fan on model CC 1800
• Balanced XLR inputs
• Speakon® and 5-way binding post speaker outputs
• Mode selector switch for stereo, parallel and
bridged-mono operation
• Input sensitivity selection
• Recessed, stepped attenuators
• Front panel circuit-breaker switch
• Five year warranty*
TOURCLASS/PROTECTION CIRCUITS
ACL™ (Active Clip Limiting) prevents speaker damage by
providing gentle gain reduction when the signal approaches the
clipping threshold.
IGM (Instantaneous Gain Modulation) monitors speaker loads
to detect conditions that may overstress output devices. This allows
safe operation into nominal 2Ω speaker loads.
AUTORAMP™ gradually increases gain to the attenuator level
settings when the amplifier is turned on. This prevents abrupt turn-on
level.
Other protection features include: short circuit, DC voltage,
comprehensive thermal management and current in-rush turn-on/off
transient and subsonic input.
DESCRIPTION
Crest Audio CC Series amplifiers are designed to achieve
unsurpassed sonic performance and long-term reliability under
extreme stress in touring or fixed 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. Wide-bandwidth output devices ensure
detailed, transparent high frequency response. And, thanks to
Crest’s exclusive IGM™ circuit, the CC Series will drive 2Ω
loads safely without compromising performance.

Product Specifications CC™ Series
CC 1800 CC 2800 CC 4000
Stereo Power: 8Ω450 W 595 W 800 W
4Ω700 W 965 W 1,350 W
2Ω900 W 1,400 W 2,000 W
Bridged Mono Power: 4Ω1,850 W 2,800 W 4,000 W
Output Voltage RMS 73 V 82 V 93 V
8Ω and 4Ω Stereo Power ratings @1kHz, <0.05% THD+N both channels driven 2Ω stereo & 4Ω Bridged Mono Power ratings @1 kHz, <0.1%THD+N
Frequency Response 10 Hz – 100 kHz; +0, -2 dB at 1 watt
Power Bandwidth 10 Hz – 35 kHz; +0, -3 dB at rated 4Ω power
Damping factor 8Ω @ 20 Hz to 1 kHz 150:1 500:1 500:1
Input CMRR @ 1 kHz > -75 dB > -65 dB > -65 dB
Gain selectable between x40 (32 dB) and x20 (26 dB)
Input Sensitivity (x40) 1.32 V +/- 3% for 1 kHz, 2Ω rated
power
1.7 V +/- 3% for 1 kHz, 4Ω rated
power
1.88 V +/- 3% for 1 kHz, 4Ω rated
power
Input Impedance 15kΩ Balanced
Hum and Noise A-weighted @ Rated power 8Ω-106 dB -111 dB -112 dB
Crosstalk 1kHz @ rated power 8Ω-55 dB -65 dB -65 dB
Class modulated rail, H switched rail, H switched rail, H
Power Supply Linear with toroid transformer
Current Draw @ 120 VAC 1/8 power 8Ω400 W 3.4 A 570 W 4.75 A 720 W 6 A
4Ω685 W 5.71 A 880 W 7.34 A 1,185 W 9.86 A
2Ω1,000 W 8.34 A 1,250 W 10.41 A 1,825 W 15.21 A
1/3 power 8Ω1,000 W 8.34 A 1,355 W 11.30 A 1,835 W 15.30 A
4Ω1,650 W 13.75 A 2,220 W 18.5 A 2,975 W 24.8 A
2Ω2,340 W 19.5 A 2,905 W 24.3 A 4,535 W 37.8 A
Thermal Emissions 1/3 power, 4Ω BTU/hr 2631 3579 4545
Cooling Back to front via 1 variable speed fan Back to front via 2 variable speed fans
Input connectors Balanced female XLR
Output connectors Speakon® connectors and five-way binding post
Controls front panel: twin recessed stepped attenuators, circuit breaker/power switch
rear panel: mode select, gain select
LED indicators Signal presence, ACL™ (Active clip limiting), Active status, Temp
Construction 16-gauge steel chassis, cast aluminum front panel
Dimensions 3.5" x 19" x 14.875" (16.125" to rack ears) 88.9 mm x 482.6 mm x 377.8 mm (409.6 mm to rack ears)
Weight 32.6 lbs. (14.8 kg) 39.8 lbs. (18.05 kg.) 43.3 lbs. (19.64 kg.)
Architects’ & Engineers’ Specifications:
The power amplifier shall consist of 2 channels. Each channel will delver a minimum of (450 / 595 / 800) watts at 8 ohms, (700 / 965 / 1,350) watts at 4 ohms, (1,850 / 2,800 / 4,000) watts at 2
ohms, 20 Hz – 20 kHz. In Bridged mono mode, it will deliver a minimum of (1,850 / 2,800 / 4,000 W) at 4 ohms, 20Hz – 20 kHz. It shall weigh (32.6 / 39.8 / 43.3) lbs. The amplifier shall incorporate
protection circuitry against output short circuits, DC voltage on outputs, thermal overload and load protection due to any form of amp failure. It will include impedance sensing circuitry, a RMS clip
limiter and Autoramp signal control. The amplifier shall have a sensitivity of 1.32 / 1.7 / 1.88 volts (x40) at the input, which will deliver full rated output power in any output configuration. Gain can be
changed to x20. The hum and noise level shall be greater than (-106 dB / -111 dB / -112 dB) “A” weighted. The amplifier shall have a class H output stage with a linear power supply. The frequency
response shall be greater than 10 Hz – 35 kHz +0, -3 dB for the CC 1800 and 10 Hz - 50 kHz, +0, -3 dB for the CC 2800/4000 at full rated output power @ 4 ohms, .1% THD. The amplifier will
operate at either 120 VAC, 60 Hz (safe operating range 100-132 VAC) or at 230 VAC, 50 Hz (safe operating range 200-264), voltage selection determined at factory. Maximum current draw at
120 V shall be no greater then 15 A, both channels driven continuously into a 2 ohm load at 1/8 power. Front panel indicators shall include LED indicators for signal present, ACL (automatic clip
limiting), Temp, and Active status. Front panel attenuators will be recessed and detented. Input connectors shall be XLR per channel. Output connectors shall be 5-way binding posts and Speakon,
per channel. The packaging of the amplifier shall allow for standard rack mounting without requiring space between similar units as long as the rack is properly ventilated. Dimensions main chassis
shall be 19" wide (482.6mm), 14.875" deep (482.6mm), 3.5" high. The amplifiers shall be designated the Crest Audio model CC 1800, CC 2800 and CC 4000.
Logo referenced in Directive 2002/96/EC Annex IV
(OJ(L)37/38,13.02.03 and defined in EN 50419: 2005
The bar is the symbol for marking of new waste and
is applied only to equipment manufactured after
13 August 2005
Crest Audio Inc.
711 A Street, Meridian, MS 39301 USA • TEL: [phone] • FAX: [phone] • www.crestaudio.com
Crest Audio reserves the right to make improvements in manufacturing or design which may affect specifications.
ver 1.0 05/27/05
®