Crest audio FCV440 User Manual

Designed with the sound contractor in mind, Crest Audio’s

Models FCV220 and FCV440 are high-quality amplifiers intend-

ed for fixed installations using constant-voltage distributed lines.

These cost-effective two rack-space amplifiers make excellent

sonic quality and long-term reliability available to even the most

price- conscious installations.

The FCV Series amplifiers use the same high-grade components

employed in the Crest Audio Professional Series amplifiers and

are fan-cooled. An internal mid-chassis fan draws cooling air

from the front of the amplifier and exhausts it out the sides. High

quality, fully-isolated output transformers are used, providing

maximum amplifier protection and freedom from output-related

ground loops. Either transformer can be bypassed for driving a

speaker directly.

The FCV Series amplifiers are fully compatible in design with

other Crest Audio amplifiers, Octal Socket Accessories and the

NexSys

computer-controlled audio system.

The FCV chassis is made of heavy 12-gauge steel for rigidity.

Attenuator controls, barrier strip outputs, Octal Sockets, and

actively balanced inputs are located on the rear panel.

Front panel features include Clip and Status LED indicators and

a combined circuit breaker/AC power switch.

As always, Crest Audio performance and reliability come stan-

dard.

Product Description

High Impedance †

Stereo

4Ω Stereo

60 Hz - 18 kHz*

<0.1% THD

110 Watts

1 kHz,

<0.05% THD

120 Watts

60 Hz - 18 kHz*

<0.1% THD

220 Watts

1 kHz,

<0.05% THD

240 Watts

Power

Specifications

+0, -3dB

†

Constant voltage line; depends on amplifier configuration

Crest Audio FCV Series Amplifiers are

fully compatible with the NexSys

Computer-Controlled Audio system.

Model FCV220

Model FCV440

FCV220 / FCV440

POWER AMPLIFIERS

The power amplifier shall have two channels. Each shall deliver a minimum of 110

watts into 4 Ohms or into a constant voltage line per channel, both channels driven,

60Hz - 18kHz. The amplifier shall be fan-cooled. It shall have circuitry to protect

itself and the speaker load from output short circuits, DC voltage on outputs, and

thermal overload. Output relays shall protect the speakers from any type of amp

failure. The amplifier shall have a voltage gain of 27x, with an input sensitivity of

0.775 volt for rated power or into a constant-voltage line. The hum and noise level shall be greater than

103.7dB, “A” weighted, below the rated output. SMPTE IND at the direct output shall be less than 0.015% at

rated power, 60Hz and 7kHz. The amplifier shall have a Class AB output stage, a transformer-coupled output

for high-impedance distributed lines, and a combination power switch/magnetic circuit breaker. The amplifier

shall also provide a means of bypassing the transformer for direct output to 8 Ohm or 4 Ohm speaker loads.

The transformer outputs shall have a frequency response equal to or greater than 60Hz-18kHz, +0, -3dB, at

rated power. The amplifier shall operate on 120, 230, or 240 volts, +5/-10%, 50 or 60Hz AC (configured at

factory). Maximum current draw shall not exceed 7.5 amperes at 120VAC or 4 amperes at 240VAC (limited

by front panel breaker for bench tests), both channels driven into a 4 ohm resistance. Front panel indicators

shall include a Clip/Limit LED and a bi-color Active/Protect LED for each channel. The rear panel shall have

an attenuator for each channel. The inputs shall be actively balanced, with rear-panel barrier strips. Octal

accessory sockets and a signal/ground lift jumper will be provided. The amplifier’s packaging shall allow for

standard rack mounting without requiring space between similar units. Dimensions shall be 3.5" (8.89cm)

high, 19" (48.26cm) wide, and 14" (35.56cm) deep. The FCV220 shall have a net weight of 42.0 lbs.

(19.06kg). The amplifier shall be designated the Crest Audio Model FCV220.

Architect’s

Specifications

FCV220

The power amplifier shall have two channels. Each shall deliver a minimum of

220 watts into 4 Ohms or into a constant voltage line per channel, both channels

driven, 60Hz - 18kHz. The amplifier shall be fan-cooled. It shall have circuitry to

protect itself and the speaker load from output short circuits, DC voltage on out-

puts, and thermal overload. Output relays shall protect the speakers from any type

of amp failure. The amplifier shall have a voltage gain of 38.3x, with an input sen-

sitivity of 0.775 volt for rated power or into a constant-voltage line. The hum and noise level shall be greater

than 103.7dB, “A” weighted, below the rated output. SMPTE IND at the direct output shall be less than

0.015% at rated power, 60Hz and 7kHz. The amplifier shall have a Class AB output stage, a transformer-

coupled output for high-impedance distributed lines, and a combination power switch/magnetic circuit break-

er. The amplifier shall also provide a means of bypassing the transformer for direct output to 8 Ohm or 4

Ohm speaker loads. The transformer outputs shall have a frequency response equal to or greater than 60Hz-

18kHz, +0, -3dB, at rated power. The amplifier shall operate on 120, 230, or 240 volts, +5/-10%, 50 or 60Hz

AC (configured at factory). Maximum current draw shall not exceed 10 amperes at 120VAC or 5 amperes at

240VAC (limited by front panel breaker for bench tests), both channels driven into a 4 ohm resistance. Front

panel indicators shall include a Clip/Limit LED and a bi-color Active/Protect LED for each channel. The rear

panel shall have an attenuator for each channel. The inputs shall be actively balanced, with rear-panel barrier

strips. Octal accessory sockets and a signal/ground lift jumper will be provided. The amplifier’s packaging

shall allow for standard rack mounting without requiring space between similar units. Dimensions shall be

3.5" (8.89cm) high, 19" (48.26cm) wide, and 14" (35.56cm) deep. The FCV440 shall have a net weight of

45.5 lbs. (20.65kg). The amplifier shall be designated the Crest Audio Model FCV440.

Architect’s

Specifications

FCV440

Crest Audio reserves the right to make improvements in manufacturing or design which may affect specification.

FCV220 FCV440

Frequency Response

THD

SMPTE IMD

Slew Rate

Damping Factor

Input CMRR

Voltage Gain (direct out)

Input Sensitivity

Input Impedance

Hum and Noise (“A” Weighted)

Cross Talk

Connectors (per channel)

Power Supply

MaxCurrentDraw

Cooling

Controls

LED Indicators (per channel)

Protection

Construction

Dimensions (H x W x L)

Gross Weight

Net Weight

Warranty

60 Hz-18 kHz; +0, -.3dB (110W)

<0.025% @ 110W into 4Ω, 1kHz

<0.015% @ 110W into 4Ω, 60 Hz & 7kHz

14V / µs, input filter bypassed

250:1, 1kHz @ 8Ω, direct out

>90 dB

X27 standard, others upon request

.775V RMS for rated power @ 8Ω,

or into constant-voltage line

20kΩ, actively balanced

>103.7 dB

>80 dB

Input/Output Barrier Strips, Octal Socket

540 VA power transformer, 20,000 µf filter capacitance

7.5A/4.0A (120VAC/240VAC)

Variable-speed DC fan

Front panel circuit breaker/power switch,

2 rear-panel attenuators, signal ground lift jumper.

Clip, bi-color Active/Protect

High Temp, DC, turn-on/off transient, short-circuit, subsonic

12 gauge single box steel chassis

3.5"x19"x14"

(15”

to rear mounting ears)

89mm x 483mm x 356mm

(

381mm to rear mounting ears)

42.0 lbs (19.06 kg)

37.6 lbs (17.07 kg)

3 years, parts and labor

60 Hz-18 kHz; +0, -.3dB (220W)

<0.025% @ 220W into 4Ω, 1kHz

<0.015% @ 220W into 4Ω, 60 Hz & 7kHz

14V / µs, input filter bypassed

250:1, 1kHz @ 8Ω, direct out

>90 dB

X38.3 standard, others upon request

.775V RMS for rated power @ 8Ω,

or into constant-voltage line

20kΩ, actively balanced

>103.7 dB

>80 dB

Input/Output Barrier Strips, Octal Socket

540 VA power transformer, 20,000 µf filter capacitance

10.0A/5.0A (120VAC/240VAC)

Variable-speed DC fan

Front panel circuit breaker/power switch,

2 rear-panel attenuators, signal ground lift jumper.

Clip, bi-color Active/Protect

High Temp, DC, turn-on/off transient, short-circuit, subsonic

12 gauge single box steel chassis

3.5"x19"x14" (15" to rear mounting ears)

89mm x 483mm x 356mm

(

381mm to rear mounting ears)

50.0 lbs (22.70 kg)

45.5 lbs (20.65 kg)

3 years, parts and labor

Crest Audio Inc.

100 Eisenhower Dr., Paramus NJ 07652 USA

TEL: 201.909.8700 FAX: 201.909.8744

http://www.crestaudio.com

v. 1.2 7/9/97 B5500003

*B5500003*

FCV220 / FCV440 POWER AMPLIFIERS

SPECIFICATIONS