CA6 POWER AMPLIFIER
Product Description
CA6 Features
The Crest Audio CA6 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.
• 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:
- ACL (Active Clip Limiting) prevents speaker damage with
gentle gain reduction at clip threshold.
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 H circuitry. Wide-bandwidth output devices
assure detailed, transparent high frequency response. And, thanks
to Crest’s exclusive IGM circuit, the CA6 will drive 2Ω loads
safely without compromise in performance.
Construction and Quality Control
The CA6 is built exclusively in Crest’s own USA manufacturing
facility, with internal components selected for premium quality
and proven durability. Each modular subassembly is pre-tested,
and the assembled CA6 receives a rigorous “hot room” burn-in
before thorough final checkout on precision test equipment.
- IGM (Instantaneous Gain Modulation) monitors speaker
loads to detect conditions that may overstress output
devices, allowing safe operation into nominal 2Ω impedances.
- 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.
Power Specifications:
Other CA Series Power Amplifiers
CA2
CA4
CA9
CA12
CA18
1kHz, .01% THD+N
250W
435W
900W
1200W
1800W
20Hz-20kHz, 0.1% THD+N
200W
400W
800W
1100W
1700W
4Ω Stereo
Power Specifications
•
•
•
•
•
Input sensitivity selection
Recessed, stepped attenuators
Front panel circuit breaker switch
Modular construction
Five-year warranty*
8Ω Stereo
4Ω Stereo
2Ω Stereo
8Ω Bridged
4Ω Bridged
1kHz, 0.01% THD+N
400W
600W
750W
1200W
1500W
20Hz-20kHz, 0.1% THD+N
350W
500W
600W
1000W
1200W
Figures are watts per channel, both channels driven.
C A 6 P OW E R A M P L I F I E R
S P E C I F I C AT I O N S
Architect’s & Engineer’s Specifications
THD+N (rated power at 4Ω, 1kHz)
SMPTE IMD (rated power at 8Ω, 60Hz & 7kHz)
Damping Factor (10-400Hz at 8Ω)
Input CMRR (1kHz)
Input Sensitivity (rated power at 8Ω )
Voltage Gain
Input Impedance (balanced/unbalanced)
Hum and Noise (“A” weighted, full power, 4Ω)
Crosstalk (“A” weighted, full power, 4Ω)
Class
Input Connectors (per channel)
Output Connectors (per channel)
Filter Storage
Power Supply (factory configured)
Idle Current Draw 120V
1/8 Power Curr. Draw (typical music, 120V/4Ω)
1/3 Power Curr. Draw (continuous music, 120V/4Ω)
Max Curr. Draw (circuit breaker rating, 120V/4Ω)
Thermal Emissions (1/8 Power, 4Ω)
Thermal Emissions (1/3 Power, 4Ω)
Cooling
Controls
LED Indicators (per channel)
Construction
Dimensions (Height x Width x Depth)
Gross Weight, Net Weight
Warranty
Power figures are watts per channel, both channels driven.
* 3-Year Warranty with 2 additional years if Registration Card
is sent to Crest Audio. (USA,
Canada, United Kingdom, and
many other countries).
Crest Audio reserves the right to
make improvements in manufacturing or design which may affect
specification.
Crest Audio specification literature is available in downloadable
PDF format; visit our website at:
http://www.crestaudio.com.
©1997 Crest Audio Inc.
v. 2.6 11/25/97 B5000017
Factory Standard
Option 1
Option 2
Rear View,
Binding Post
Version
Gain
X68
X40
X20
Sens
.775V
1.32V
2.65V
The power amplifier shall have two channels. At 8 ohms, 20Hz
- 20kHz, 0.1% THD+N, it shall deliver a minimum of 350 watts
per channel. At 4 ohms, 20Hz - 20kHz, 0.1% THD+N, it shall
deliver a minimum of 500 watts per channel. In bridged mono
mode with an 8 ohm load, 20Hz - 20kHz, 0.1% THD+N, it
shall deliver a minimum of 1000 watts.
The amplifier shall have circuitry to protect itself from output
short circuits, thermal overload or other adverse load conditions. The amplifier shall protect speaker loads from DC voltage on outputs. The amplifier shall have active clip limiting
and impedance sensing circuitry. Output relays shall protect
the speakers from amplifier failure.
Two rear panel mounted variable speed DC fans (filters
detachable without tools) shall provide back to front air flow
through the chassis.
Each channel shall have a standard (factory-set) input sensitivity of 0.775 Volts, and shall be fitted with an internal jumper
which allows the gain to be altered to X20 or X40. The hum
and noise level shall be 105 dB below rated output, “A”
weighted. SMPTE IMD shall be less than 0.01% at rated
power, 60Hz and 7kHz. The amplifier shall have a class H output stage. The frequency response shall be 20Hz-20kHz, +0,
-0.3dB (1W/8Ω).
The amplifier will operate at 100V-240V, 50-60 Hz AC (configured at factory). Maximum current draw shall not exceed 18
amperes at 120VAC (limited by front panel breaker for bench
tests).
Front panel indicators shall include Active, Protect, Signal,
and Clip LED’s for each channel. Front panel attenuators
shall be recessed and detented.
Rear panel input connectors shall be female TRS and XLR
type, internally dealer-configurable for pin 2 (factory setting)
or pin 3 positive. Output terminations shall be 5-way output
binding posts or Speakon output connectors (market dependent). A ground lift switch and a Stereo/Parallel/Bridged Mono
mode operation switch shall be provided.
A rear-panel IEC AC mains socket (with power cord) or single
AC mains cord having an appropriate AC plug for the intended
operating voltage shall be provided (market dependent).
The packaging of the amplifier shall allow for standard rack
mounting without requiring space between similar units.
Optional rack mount handles will be available. Dimensions
shall be 19" (483mm) wide, 3.5" (8.9mm) high and 18"
(457mm) deep. The amplifier shall weigh 44.0 lbs. (19.98 kg.)
net, and shall be designated the Crest Audio model CA6.
A
A
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
+
+
AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á
L'HUMIDITÉ
Designed & manufactured in the USA by:
A
A
AB
• •
A
B
A B
Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
+
A B
••
B
A B
B
2+
1
3-
Rear View,
Speakon
Version
643-105
NL4FC
A
A
A
A
AB
Designed & manufactured in the USA by:
• •
A
(not available in
North America)
Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
+
Dealer-Configurable Gain/Sensitivity Options
1kHz, 0.01% THD+N
20Hz-20kHz, 0.1% THD+N
400W
350W
600W
500W
750W
600W
1200W
1000W
1500W
1200W
73V
103V
20Hz-20kHz, -3dB@135kHz
20Hz-20kHz, -1.1dB/+0dB
ACL, IGM, AutoRamp, short circuit, DC voltage,
turn-on/off transient, current inrush, sub/ultrasonic input.
<0.01%
<0.01%
400:1
> - 60dB
0.775V standard (see table below)
X68 standard (see table below)
>20kΩ/>10kΩ
-105dB
> - 60 dB
H
Female XLR (pin 2+, dealer configurable for pin 3+), TRS (tip+)
5-way output binding posts or Speakon connectors (market dependent)
68,000 µF
100V-240V, 50-60Hz
1.6A
6A
13.0A
18A
2630 BTU/hr
3713 BTU/hr
Back-to-front via 2 rear panel mounted variable-speed DC fans
(filters removable without tools)
Front Panel: 2 attenuators
Rear Panel: signal ground lift switch, mode select switch
Clip/Limit, Signal, Temp/DC, Active
Steel chassis, 16 gauge. Double thickness in rack ear areas.
3.5" x 19" x 18" / 89 x 483 x 457mm
49 lbs. / 22.25 kg., 44 lbs. / 19.98 kg.
5 years*
+
8Ω Stereo Power
4Ω Stereo Power
2Ω Stereo Power
8Ω Bridged Mono Power
4Ω Bridged Mono Power
Max RMS Output Voltage (each channel)
Peak Output Voltage (each channel)
Frequency Response (+0 / -0.3dB, 1W/8Ω)
Power Bandwidth (rated power at 4Ω, 1% THD+N)
TourClass® Protection
B
A B
B
A B
A B
• •
B
2+
1
3-
*B5000017*
Crest Audio Inc.
100 Eisenhower Dr., Paramus NJ 07652 USA
TEL: 201.909.8700 FAX: 201.909.8744
http://www.crestaudio.com
Download PDF
Similar pages
CA6 Specifications
PL6001 Specifications
CA9-X Specifications
FXA601 Specifications
CA2 Specifications
FXA901 Specifications
PL4601 Specifications