Crest audio CA9-X SPECIFICATIONS

CA9-X

POWER AMPLIFIER

Preliminary Product Description

The Crest Audio CA9-X professional power amplifier is designed to achieve unsurpassed sonic performance and longterm reliability—even when operating 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 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 CA9-X will drive loads

safely without compromise in performance.

Construction and Quality Control

The CA9-X 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 CA9-X receives a rigorous “hot room” burn-in before thorough final checkout on precision test equipment.

CA9-X Features

• 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

- ACL (Active Clip Limiting) prevents speaker damage with

- IGM (Instantaneous Gain Modulation) monitors speaker

- AutoRamp gradually increases gain to attenuator setting

- TourClass also includes comprehensive thermal manage-

• Input sensitivity selection

• Recessed, stepped attenuators

• Front panel circuit breaker switch

• Modular construction

• Five-year warranty*

protection circuits:

gentle gain reduction at clip threshold.

loads to detect conditions that may overstress output devices, allowing safe operation.

level when amplifier is turned on.

ment, and short circuit, DC voltage, turn-on/off transient, current inrush and sub/ultrasonic input protection.

Power Specifications 8Ω Stereo 4Ω Stereo 8Ω Bridged

1kHz, 0.01% THD+N 600W 900W 1800W 20Hz-20kHz, 0.1% THD+N 550W 800W 1600W

Figures are watts per channel, both channels driven.

CA9-X POWER AMPLIFIER

PRELIMINARY SPECIFICATIONS

1kHz, 0.01% THD+N 20Hz-20kHz, 0.1% THD+N

8Ω Stereo Power 4Ω Stereo Power

8Ω 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

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)

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)

Controls

LED Indicators

(per channel)

Construction

Dimensions

(Height x Width x Depth)

Gross Weight, Net Weight

Warranty

Dealer-Configurable Gain/Sensitivity Options Factory Standard X47.4 1.40V

600W 550W 900W 800W 1800W 1600W 82V 116V 20Hz-20kHz, -3dB@135kHz 20Hz-20kHz, -.84dB/+0dB ACL, IGM, AutoRamp, short circuit, DC voltage, turn-on/off transient, current inrush, sub/ultrasonic input. <0.01% <0.01% 700:1 > - 60dB

1.40V standard (see table below) X47.4 standard (see table below) >20kΩ/>10kΩ

-105dB > - 60dB

Class

H Female XLR (pin 2+, dealer configurable for pin 3+), TRS (tip+) 5-way output binding posts or Speakon connectors 80,000 µF 100V-240V, 50-60Hz

2.0A

8.6A

16.0A 30A 3250 BTU/hr 4341 BTU/hr

Cooling

Back-to-front via 2 rear panel mounted variable-speed DC fans (filters removable without tools) Front Panel: 2 attenuators, located behind blanking plugs 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 52lbs. (23.60 kg.), 47 lbs. (21.33 kg.)

5 years

Gain Sens

Option 1 X40.0 1.66V Option 2 X20.0 3.32V

(market dependent)

Architect’s & Engineer’s Specifications

The power amplifier shall have two channels. At 8 ohms, 20Hz

- 20kHz, 0.1% THD+N, it shall deliver a minimum of 550 watts per channel. At 4 ohms, 20Hz - 20kHz, 0.1% THD+N, it shall deliver a minimum of 800 watts per channel. In bridged mono mode with an 8 ohm load, 20Hz - 20kHz, 0.1% THD+N, it shall deliver a minimum of 1600 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 1.40 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 30 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 detented and located behind blanking plugs. 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" (89mm) high and 18" (457mm) deep. The amplifier shall weigh 47 lbs. (21.33 kg.) net, and shall be designated the Crest Audio model CA9-X.

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.

v. 1.0 08/13/97

Rear View,

Binding Post

Version

Rear View,

Speakon

Version

(not available in

North America)

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

+ +

A B

NL4FC

A B

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Designed & manufactured in the USA by:

Crest Audio Inc.

100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

643-105

Designed & manufactured in the USA by:

Crest Audio Inc.

100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

Crest Audio Inc.

100 Eisenhower Dr., Paramus NJ 07652 USA

TEL: 201.909.8700 FAX: 201.909.8744

http://www.crestaudio.com