Crest Audio FCV220 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
4ΩStereo
60 Hz - 18 kHz*
<0.1% THD
110 Watts
110 Watts
1 kHz,
<0.05% THD
120 Watts
120 Watts
60 Hz - 18 kHz*
<0.1% THD
220 Watts
220 Watts
1 kHz,
<0.05% THD
240 Watts
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.
Crest Audio specification literature is available in downloadable PDF format; visit our website at: http://www.crestaudio.com. ©1997 Crest Audio Inc.
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: [phone] FAX: [phone]
http://www.crestaudio.com
v. 1.2 7/9/97 B5500003 *B5500003*
FCV220 / FCV440 POWER AMPLIFIERS
SPECIFICATIONS