Crest Audio Stereo Amplifier MA7120, MA9130, Crest Audio Pro Series Power Amplifiers, Appendix D

MA7120	1kHz, <0.03% THD+N	20Hz-20kHz, <0.1% THD+N
8Ω Bridged Mono Power	1150W	975W
4Ω Bridged Mono Power	1200W	1100W
Max RMS Output Voltage (bridged)	140V
Peak Output Voltage (bridged)	198V
Frequency Response (+0 / -0.3dB, 1W/8Ω )	20 Hz-20 kHz, -3dB @ 53kHz
Power Bandwidth (rated power at 4Ω , 1% THD+N)	20 Hz-20 kHz, +0/-0.2dB
Protection Circuitry	Clip Limit, IGM, AutoRamp, High Temp, short-circuit,
	DC voltage, turn-on/off transient, sub/ultrasonic input.
THD+N (rated power, 1kHz)	<0.03%
SMPTE IMD (rated power at 8Ω , 60Hz & 7kHz)	<0.5%
Damping Factor (10-400Hz at 8Ω )	400:1
Input CMRR (1kHz)	>60 dB
Input Sensitivity (rated power at 4Ω bridged )	10.5V RMS for 1100W at 4Ω bridged
Voltage Gain	X6.3 (+16dB) bridged
Input Impedance (balanced)	>20kΩ
Hum and Noise (“A” weighted, full power, 4Ω )	>-100 dB
Crosstalk (“A” weighted, full power, 4Ω )	>-60dB
Class	H
Input Connectors (per channel)	Female XLR (pin 3+), Octal Socket
Output Connectors (per channel)	5-way output binding posts
Filter Storage	120,000 µF
Power Supply (factory configured)	100V–240V, 50–60Hz
Idle Current Draw (120V)	0.7A
1/8 Power Curr. Draw (typical music, 120V/4Ω )	3.9A
1/3 Power Curr. Draw (continuous music, 120V/4Ω )	7.75A
Max Curr. Draw (circuit breaker rating, 120V/4Ω )	15.0A
Thermal Emissions (1/8 Power, 4Ω )	2503 BTU/hr
Thermal Emissions (1/3 Power, 4Ω )	4505 BTU/hr
Cooling	Rear to front tunnel heatsink, 2 variable speed DC fans
Controls	Front panel: 2 attenuators, circuit breaker/power switch;
	Rear panel: mode switch, signal ground lift jumper.
LED Indicators (per channel)	Clip/Limit, Signal, Temp/DC, Active
Construction	16 ga. single piece steel chassis, .187" (5mm) alum. front panel
Dimensions (Height x Width x Depth)	3.5"x19"x15" (16" to rear ears)
	89mm x 483mm x 381mm (406mm to rear ears)
Gross Weight, Net Weight	57 lbs. (25.88 kg.), 52 lbs. (23.60 kg.)
Warranty	5 years, parts and labor†

† USA, Canada, U.K., and many other countries. Power figures are watts per channel, both channels driven. Crest Audio reserves the righ make improvements in manufacturing or design which may affect specifications Crest Audio specification literature is available in do

MA9130	8Ω Stereo Power	750W	720W
		1kHz, <0.025% THD+N	20Hz-20kHz, <0.1% THD+N
	4Ω Stereo Power	1225W	1200W
	8Ω Bridged Mono Power	2450W	2250W
	2Ω Stereo Power	1400W	1400W
	4Ω Bridged Mono Power	2800W	2800W
Max RMS Output Voltage (each channel)		91V
Peak Output Voltage (each channel)		129V
Frequency Response (+0 / -0.3dB, 1W/8Ω )		20 Hz-20 kHz, -3dB @ 53kHz
Power Bandwidth (rated power at 4Ω , 1% THD+N)		20 Hz-20 kHz, +0/-0.2dB
	Protection Circuitry	Clip Limit, IGM, AutoRamp, High Temp, short-circuit, DC volt-
		age, turn-on/off transient, sub/ultrasonic input.
THD+N (rated power at 4Ω , 1kHz)		<0.025%
SMPTE IMD (rated power at 8Ω , 60Hz & 7kHz)		<0.1%
Damping Factor (10-400Hz at 8Ω )		400:1
	Input CMRR (1kHz)	>60 dB
Input Sensitivity (rated power at 4Ω )		1.75V RMS
	Voltage Gain	X14 (+23 dB)
	Input Impedance (balanced)	>20kΩ
Hum and Noise (“A” weighted, full power, 4Ω )		> -100 dB
Crosstalk (“A” weighted, full power, 4Ω )		> -60dB
	Class	H
Input Connectors (per channel)		Female XLR (pin 3+), Octal Socket
Output Connectors (per channel)		2 pair 5-way output binding posts
	Filter Storage	70,000 µF
Power Supply (factory configured)		100V–240V, 50–60Hz
	Idle Current Draw (240V)	0.8A
1/8 Power Curr. Draw (typical music, 240V/4Ω )		5.4A
1/3 Power Curr. Draw (continuous music, 240V/4Ω )		10.9A
Max Curr. Draw (circuit breaker rating, 240V/4Ω )		19.0A
Thermal Emissions (1/8 Power, 4Ω )		3380 BTU/hr
Thermal Emissions (1/3 Power, 4Ω )		6140 BTU/hr
	Cooling	Rear to front tunnel heatsink, low-noise 2-speed fan
	Controls	Front panel: 2 attenuators, circuit breaker/power switch;
		Rear panel: mode switch, signal ground lift jumper.
LED Indicators (per channel)		Clip/Limit, Signal, Temp/DC, Active
	Construction	14 ga. steel chassis, 0.25" (6mm) aluminum front panel
Dimensions (Height x Width x Depth)		5.25"x19"x15" (16" to rear ears)
		133mm x 483mm x 381mm (406mm to rear ears)
	Gross Weight, Net Weight	85 lbs. (38.6 kg.), 80 lbs. (36.0	kg.)
	Warranty	5 years, parts and labor†

† USA, Canada, U.K., and many other countries. Power figures are watts per channel, both channels driven. Crest Audio reserves the righ

Crest Audio Pro Series Power Amplifiers Appendix D