User manual CREST AUDIO FCV220

[. . . ] 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 standard. ® Crest Audio FCV Series Amplifiers are fully compatible with the NexSys Computer-Controlled Audio system. Power Specifications High Impedance Stereo 4 Stereo Model FCV220 60 Hz - 18 kHz* <0. 1% THD 1 kHz, <0. 05% THD Model FCV440 60 Hz - 18 kHz* <0. 1% THD 1 kHz, <0. 05% THD 110 Watts 120 Watts 220 Watts 240 Watts 110 Watts 120 Watts 220 Watts 240 Watts *+0, -3dB Constant voltage line; depends on amplifier configuration F C V 2 2 0 / F C V 4 4 0 P OW E R A M P L I F I E R S S P E C I F I C AT I O N S FCV220 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 Max Current Draw 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 4, 1kHz <0. 015% @ 110W into 4, 60 Hz & 7kHz 14V / µs, input filter bypassed 250:1, 1kHz @ 8, direct out >90 dB X27 standard, others upon request . 775V RMS for rated power @ 8, or into constant-voltage line 20k, 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 FCV440 60 Hz-18 kHz; +0, -. 3dB (220W) <0. 025% @ 220W into 4, 1kHz <0. 015% @ 220W into 4, 60 Hz & 7kHz 14V / µs, input filter bypassed 250:1, 1kHz @ 8, direct out >90 dB X38. 3 standard, others upon request . 775V RMS for rated power @ 8, or into constant-voltage line 20k, 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 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. 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 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 transformercoupled 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 60Hz18kHz, +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 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. [. . . ]