MA7120 | 1kHz, <0.03% THD+N | |
8Ω Bridged Mono Power | 1150W | 975W |
4Ω Bridged Mono Power | 1200W | 1100W |
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Max RMS Output Voltage (bridged) | 140V |
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Peak Output Voltage (bridged) | 198V |
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Frequency Response (+0 / | 20 |
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Power Bandwidth (rated power at 4Ω , 1% THD+N) | 20 |
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Protection Circuitry | Clip Limit, IGM, AutoRamp, High Temp, | |
| DC voltage, | |
THD+N (rated power, 1kHz) | <0.03% |
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SMPTE IMD (rated power at 8Ω , 60Hz & 7kHz) | <0.5% |
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Damping Factor | 400:1 |
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Input CMRR (1kHz) | >60 dB |
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Input Sensitivity (rated power at 4Ω bridged ) | 10.5V RMS for 1100W at 4Ω bridged | |
Voltage Gain | X6.3 (+16dB) bridged |
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Input Impedance (balanced) | >20kΩ |
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Hum and Noise (“A” weighted, full power, 4Ω ) |
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Crosstalk (“A” weighted, full power, 4Ω ) |
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Class | H |
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Input Connectors (per channel) | Female XLR (pin 3+), Octal Socket | |
Output Connectors (per channel) |
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Filter Storage | 120,000 µF |
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Power Supply (factory configured) |
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Idle Current Draw (120V) | 0.7A |
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1/8 Power Curr. Draw (typical music, 120V/4Ω ) | 3.9A |
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1/3 Power Curr. Draw (continuous music, 120V/4Ω ) | 7.75A |
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Max Curr. Draw (circuit breaker rating, 120V/4Ω ) | 15.0A |
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Thermal Emissions (1/8 Power, 4Ω ) | 2503 BTU/hr |
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Thermal Emissions (1/3 Power, 4Ω ) | 4505 BTU/hr |
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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) |
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| 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† |
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† 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 |
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| 1kHz, <0.025% THD+N | |
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| 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 |
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Peak Output Voltage (each channel) | 129V |
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Frequency Response (+0 / | 20 |
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Power Bandwidth (rated power at 4Ω , 1% THD+N) | 20 |
| |
| Protection Circuitry | Clip Limit, IGM, AutoRamp, High Temp, | |
|
| age, | |
THD+N (rated power at 4Ω , 1kHz) | <0.025% |
| |
SMPTE IMD (rated power at 8Ω , 60Hz & 7kHz) | <0.1% |
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Damping Factor | 400:1 |
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| Input CMRR (1kHz) | >60 dB |
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Input Sensitivity (rated power at 4Ω ) | 1.75V RMS |
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| Voltage Gain | X14 (+23 dB) |
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| Input Impedance (balanced) | >20kΩ |
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Hum and Noise (“A” weighted, full power, 4Ω ) | > |
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Crosstalk (“A” weighted, full power, 4Ω ) | > |
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| Class | H |
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Input Connectors (per channel) | Female XLR (pin 3+), Octal Socket | ||
Output Connectors (per channel) | 2 pair | ||
| Filter Storage | 70,000 µF |
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Power Supply (factory configured) |
| ||
| Idle Current Draw (240V) | 0.8A |
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1/8 Power Curr. Draw (typical music, 240V/4Ω ) | 5.4A |
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1/3 Power Curr. Draw (continuous music, 240V/4Ω ) | 10.9A |
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Max Curr. Draw (circuit breaker rating, 240V/4Ω ) | 19.0A |
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Thermal Emissions (1/8 Power, 4Ω ) | 3380 BTU/hr |
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Thermal Emissions (1/3 Power, 4Ω ) | 6140 BTU/hr |
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| Cooling | Rear to front tunnel heatsink, | |
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| Controls | Front panel: 2 attenuators, circuit breaker/power switch; | |
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| 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† |
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† 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 |