Crest Audio CA4 Specifications

Add to my manuals
2 Pages

advertisement

Crest Audio CA4 Specifications | Manualzz

CA2 POWER AMPLIFIER

Product Description

The Crest Audio CA2 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.

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 AB output circuit design. Wide-bandwidth output devices assure detailed, transparent high frequency response.

Construction and Quality Control

The CA2 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 CA2 receives a rigorous “hot room” burn-in before thorough final checkout on precision test equipment.

Power Specifications:

Other CA Series Power Amplifiers

4

S t e r e o CA4 CA6 CA9

1kHz, .01% THD+N 4 3 5 W

20Hz-20kHz, 0.1% THD+N 4 0 0 W

6 0 0 W

5 0 0 W

9 0 0 W

8 0 0 W

CA12

1 2 0 0 W

1 1 0 0 W

CA18

1 8 0 0 W

1 7 0 0 W

CA2 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 ® protection circuits:

ACL (Active Clip Limiting) prevents speaker damage with gentle gain reduction at clip threshold.

IGM (Instantaneous Gain Modulation) monitors speaker loads to detect conditions that may overstress output devices.

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.

• Input sensitivity selection

• Recessed, stepped attenuators

• Front panel circuit breaker switch

• Modular construction

• Five-year warranty*

P o w e r S p e c i f i c a t i o n s

1kHz, 0.01% THD+N

20Hz-20kHz, 0.1% THD+N

Figures are watts per channel, both channels driven.

8 O h m s S t e r e o

1 6 0 W

1 5 0 W

4 O h m s S t e r e o

2 5 0 W

2 0 0 W

8 O h m s B r i d g e d

5 0 0 W

4 5 0 W

Dealer-Configurable Gain/Sensitivity Options

C A 2 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

8

Stereo Power

4

Stereo Power

8

Bridged Mono Power

Max RMS Output Voltage (each channel)

Peak Output Voltage (each channel)

Frequency Response (+0 / -0.3dB, 1W/8

)

Power Bandwidth (rated power at 4

, 1% THD+N)

TourClass ® Protection

1kHz, 0.01% THD+N

160W

250W

500W

44V

62V

20Hz-20kHz, -3dB@135kHz

20Hz-20kHz, -.9dB/+.15dB

20Hz-20kHz, 0.1% THD+N

150W

200W

450W

ACL, IGM, AutoRamp, short circuit, DC voltage, turn-on/off transient, current inrush, sub/ultrasonic input.

THD+N (rated power at 4

, 1kHz)

SMPTE IMD (rated power at 8

, 60Hz & 7kHz)

Damping Factor (10-400Hz at 8

)

Input CMRR (1kHz)

Input Sensitivity (rated power at 8

)

Voltage Gain

<0.01%

<0.01%

368:1

> - 60dB

0.775V standard (see table below)

Input Impedance (balanced/unbalanced)

Hum and Noise (“A” weighted, full power, 4

)

Crosstalk (“A” weighted, full power, 4

)

X45 standard (see table below)

>20k

Class AB

-105dB

/>10k

> - 60dB

Input Connectors (per channel)

Output Connectors (per channel)

Power Supply

Filter Storage

(factory configured)

Female XLR (pin 2+, dealer config. for pin 3+), TRS (tip+)

5-way output binding posts or Speakon connectors

(market dependent)

20,000

µ

F

100V-240V, 50-60Hz

Idle Current Draw 120V

1/8 Power Curr. Draw (typical music, 120V/4

)

1/3 Power Curr. Draw (continuous music, 120V/4

)

Max Curr. Draw (circuit breaker rating, 120V/4

)

Thermal Emissions (1/8 Power, 4

)

Thermal Emissions (1/3 Power, 4

)

Cooling

1.2A

3.25A

5.5A

9.0A

1119 BTU/hr

1607 BTU/hr

Back-to-front via 2 rear panel mounted variable-speed DC fans

Controls

(filters removable without tools)

Front Panel: 2 attenuators

LED Indicators

Dimensions

(per channel)

Construction

(Height x Width x Depth)

Gross Weight, Net Weight

Warranty

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

38 lbs. / 17.25 kg., 33 lbs. / 14.98 kg.

5 years *

Factory Standard

Option 1

Option 2

Gain

X45

X40

X20

Sens

.775V

.866V

1.73V

Architect’s & Engineer’s Specifications

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

- 20kHz, 0.1% THD, it shall deliver a minimum of 150 watts per channel. At 4 ohms, 20Hz - 20kHz, 0.1% THD, it shall deliver a minimum of 200 watts per channel. In bridged mono mode with an 8 ohm load, 20Hz - 20kHz, 0.1% THD, it shall deliver a minimum of 450 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 AB output stage. The frequency response shall be 20Hz-20kHz,

+0, -0.3dB (1W/8

).

The amplifier will operate at 100V-240V, 50-60 Hz AC (configured at factory). Maximum current draw shall not exceed 9 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" (89mm) high and 18"

(457mm) deep. The amplifier shall weigh 33 lbs. (14.98 kg) net, and shall be designated the Crest Audio model CA2.

Rear View,

Binding Post

Version

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.

CAUTION

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

A

B

A

B

A

NL4FC

B

A

A

A B

• •

+

A B

A B

• •

A

A B

B

Designed & manufactured in the USA by:

Crest Audio Inc.

100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

A

A

A B

• •

+

A B

A B

• •

A

A B

B

1

3-

2+

643-105

Designed & manufactured in the USA by:

Crest Audio Inc.

100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

1

3-

2+

Crest Audio Inc.

100 Eisenhower Dr., Paramus NJ 07652 USA

TEL : 201.909.8700 FAX : 201.909.8744

http://www.crestaudio.com

*B5000015* v. 2.6 11/25/97 B5000015

Rear View,

Speakon

Version

(not available in

North America)

advertisement

Was this manual useful for you? Yes No
Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Questions and Answers

What is the power output of the Crest Audio CA2 amplifier?
At 8 ohms, stereo mode, the amplifier delivers 150 watts per channel, and in bridged mono mode, it delivers 450 watts.
What protection features does the CA2 amplifier have?
The CA2 amplifier features TourClass protection, including ACL (Active Clip Limiting), IGM (Instantaneous Gain Modulation), and comprehensive thermal management.
What type of input and output connectors does the CA2 amplifier have?
The amplifier has balanced XLR and 1/4-inch (TRS) inputs, and 5-way binding post outputs or Speakon connectors (market dependent).
What is the frequency response of the CA2 amplifier?
The frequency response is 20Hz-20kHz, with a +/- 0.3dB tolerance at 1W/8 ohms.
What is the weight and dimensions of the CA2 amplifier?
The CA2 amplifier weighs 33 lbs. (14.98 kg) net, and its dimensions are 3.5" x 19" x 18" (89 x 483 x 457mm).

Related manuals

Download PDF

advertisement