Crest audio FXA601 SPECIFICATIONS

FXA601

POWER AMPLIFIER

FXA

Product Description

The Crest Audio FXA601 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 AB output circuit design. Wide-bandwidth output devices assure detailed, transparent high frequency response.

Construction and Quality Control

The FXA601 is built exclusively in Crest’s own USA manufacturing facility, with internal components selected for premium quality and proven durability. Each modular subassembly is pretested, and the assembled FXA601 receives a rigorous “hot room” burn-in before thorough final checkout on precision test equipment.

Power Specifications: Other FXA Series Power Amplifiers

4 Ω Stereo FXA901 FXA1201 FXA2401 FXA3601 FXA4801

1kHz, .01% THD+N 435W 600W 900W 1200W 1800W 20Hz-20kHz, 0.1% THD+N 400W 500W 800W 1100W 1700W

FXA601 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

• 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

• Three-year warranty

protection circuits:

gentle gain reduction at clip threshold.

loads to detect conditions that may overstress output devices.

level when amplifier is turned on.

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

0 dB

CLIP

-3

SIGNAL

-1

FXA

PROTECT

ACTIVE

Figures are watts per channel, both channels driven.

CLIP

SIGNAL

PROTECT

OFF

ACTIVE

Power Specifications 8 Ohms Stereo 4 Ohms Stereo 8 Ohms Bridged

1kHz, 0.01% THD+N 160W 250W 500W 20Hz-20kHz, 0.1% THD+N 150W 200W 450W

-6

-3

-10

-15

-30

-80 Ch A

-1

0 dB

-6

-10

-15

-30

-80 Ch B

FXA601 POWER AMPLIFIER

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 220V

1/8 Power Curr. Draw

(typical music, 220V/4Ω)

1/3 Power Curr. Draw (continuous music, 220V/4Ω)

Max Curr. Draw (circuit breaker rating, 220V/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 X45 .775V

160W 150W 250W 200W 500W 450W 44V 62V 20Hz-20kHz, -3dB@135kHz 20Hz-20kHz, -.9dB/+.15dB ACL, IGM, AutoRamp, short circuit, DC voltage, turn-on/off transient, current inrush, sub/ultrasonic input. <0.01% <0.01% 368:1 > - 60dB

0.775V standard (see table below) X45 standard (see table below) >20kΩ/>10kΩ

-105dB > - 60dB

Class

AB Female XLR (pin 2+, dealer config. for pin 3+), TRS (tip+) 5-way output binding posts 20,000 µF 100V-240V, 50-60Hz

0.6A

1.9A

2.3A

5.0A 1119 BTU/hr 1607 BTU/hr

Cooling

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 17.85" / 89 x 483 x 454mm 38 lbs. / 17.25 kg., 33 lbs. / 14.98 kg. 3 years, parts & labor

Gain Sens

Option 1 X40 .866V Option 2 X20 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/8Ω). The amplifier will operate at 100V-240V, 50-60 Hz AC (configured at factory). Maximum current draw shall not exceed 5 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. 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 17.85" (454mm) deep. The amplifier shall weigh 33 lbs. (14.98 kg) net, and shall be designated the Crest Audio model FXA601.

Rear View

v. 1.0 11/6/97

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

Power figures are watts per channel, both channels driven. Crest Audio reserves the right to make improvements in manufacturing or design which may affect specification.

+ +

A B

•

••

Designed & manufactured in the USA by:

Crest Audio Inc.

100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

100 Eisenhower Dr., Paramus NJ 07652 USA

TEL: 201.909.8700 FAX: 201.909.8744

http://www.crestaudio.com

Crest Audio Inc.