Specifications
Operating Manual - Pema Protea Equipped Media Amplier
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6. SPECIFICATIONS
6.1 General Power Amplifier Specifications
0dBu = 0.775V rms
PemaAmplifierModel 4125 8125 4250 8250
120VAC 230VAC 120VAC 230VAC 120VAC 230VAC 120VAC 230VAC
Continuous Average Power Output Per Channel
Low Z models, Stereo Mode, all channels driven
8Ω, 20Hz-20kHz 1%THD . . . . . . . . . . . . . . . . . . . .75W 75W 75W 75W 150W 150W 150W 150W
4Ω, 20Hz-20kHz 1%THD . . . . . . . . . . . . . . . . . . . .125W 125W 125W 125W 250W 250W 250W 250W
Low Z models, Bridge Mode, all channels driven
8Ω, 20Hz-20kHz 1%THD . . . . . . . . . . . . . . . . . . . .250W 250W 250W 250W 500W 500W 500W 500W
70V, 100V distributed output models,
20Hz-20kHz 1%THD, per channel . . . . . . . . . . . . .125W 125W 125W 125W 250W 250W 250W 250W
Line Current Draw (all channels driven)
Line Current, Standby mode . . . . . . . . . . . . . . . . . . .190mA 95mA 290mA 145mA 190mA 95mA 290mA 145mA
Line Current, Idle (no signal). . . . . . . . . . . . . . . . . . .540mA 270mA 565mA 283mA 540mA 270mA 565mA 283mA
Line Current, Typical (1/8 power pink noise) . . . . . .1.70A 0.85A 2.78A 1.39A 2.85A 1.43A 5.00A 2.50A
Line Current, Maximum (1/3 power sine wave) . . . .3.27A 1.64A 5.78A 2.89A 6.00A 3.00A 11.0A 5.50A
Thermal Dissipation (all channels driven)
BTU/hr, Standby mode, . . . . . . . . . . . . . . . . . . . . . .46.7 46.7 63.8 63.8 46.7 46.7 63.8 63.8
BTU/hr, Idle (no signal). . . . . . . . . . . . . . . . . . . . . . .123 123 187 187 123 123 187 187
BTU/hr, Typ (1/8 power pink noise) . . . . . . . . . . . . .232 232 444 444 341 341 700 700
BTU/hr, Max (1/3 power sine wave) . . . . . . . . . . . . .251 251 481 481 378 378 775 775
Input Sensitivity (low Z models 4Ω) . . . . . . . . . . . . . .3.2dBu 3.2dBu 3.2dBu 3.2dBu 6.2dBu 6.2dBu 6.2dBu 6.2dBu
Input Sensitivity (70V and 100V models) . . . . . . . . . .7.2dBu (all 70V and 100V models)
Voltage Gain (low Z models). . . . . . . . . . . . . . . . . . . .26dB (all low Z models)
Voltage Gain (70V models) . . . . . . . . . . . . . . . . . . . . .32dB (all 70V models)
Voltage Gain (100V models) . . . . . . . . . . . . . . . . . . . .35dB (all 100V models)
Damping Factor (8 ohm load, <1kHz). . . . . . . . . . . . .>250 (all models)
Distortion (SMPTE, typical) . . . . . . . . . . . . . . . . . . . .<0.5% (all models)
Distortion (THD-N, typical)
(8Ω, 10dB below rated power, 20Hz-20kHz) . . . . . .<0.5% (all models)
Channel Separation (dB from full output, 1kHz). . . . .-80dB (all models)
Signal to Noise (20Hz-20KHz, unweighted). . . . . . . .>102dB (all 125W/Ch models) >105dB (all 250W/Ch models)
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . .20Hz-20kHz, +/-1dB (all models)
Balanced Mic/Line Input Connector . . . . . . . . . . . . . . . . . . . . . . .Euroblock 3.5mm
Mic/Line Input Impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.8KΩ
Mic/Line Maximum Input Level . . . . . . . . . . . . . . . . . . . . . . . . .+21dBu
Mic/Line Phantom Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +15V, channel 1-4 switchable, channel 5-8 switchable
Unbalanced Summed Mono Input Connector . . . . . . . . . . . . . . . .Dual RCA
Summed Mono Input Impedance. . . . . . . . . . . . . . . . . . . . . . . . .3.16KΩ
Summed Mono Maximum Input Level . . . . . . . . . . . . . . . . . . . .+11dBu
Channel 1 TEL-PBX Input Connector. . . . . . . . . . . . . . . . . . . . . .Euroblock 3.5mm
TEL-PBX Input Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.9KΩ
TEL-PBX Maximum Input Level . . . . . . . . . . . . . . . . . . . . . . . .+21dBu
Preamp/AUX Output Connector . . . . . . . . . . . . . . . . . . . . . . . . . .Balanced Euroblock 3.5mm
Preamp Output Maximum Level . . . . . . . . . . . . . . . . . . . . . . . . .+8dBu
AUX Output Maximum Level (ch 5-8 on 4 channel amp) . . . . .+20dBu
Speaker Output Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Euroblock 7.62mm