DMA-400 Monaural Reference Standard Technical Data

Power Output (continuous)

@ 8 ohms - 350 Watts RMS

@ 4 ohms - 560 Watts RMS

@ 2 ohms - 705 Watts RMS

Output Current

90 Amps peak

Frequency Response

±0.1 dB, DC-150 KHz

±1 dB, DC-1 MHz

±3 dB, DC-1.8 MHz

Distortion

     Static

Less than 0.015% from DC to 100 KHz. Typically 0.009% @ 350 Watts RMS / 8 ohms

     Dynamic

8 Tone Cluster Test 20 KHz @ 500 Hz separation; 0.01% 8 ohms; 0.015% / 4 ohms

Speed

     Rise Time  

Less than 225 nanoseconds

     Settling

1.5 microseconds to -40dB

     Slew Rate

650 volts/microsecond

Noise

     Signal to Noise

98dB unweighted, 108dB ASA A

     Crosstalk

102dB @ full power 8 ohms

Input

     Impedance

10K 

     Sensitivity

1.5V nominal output

Power Supply

     Line Voltage

100 volts, 120 volts, 240 volts (internal wiring/factory)

     AC Voltage Range

+/- 10%

     Maximum Consumption

2000 watts

     Quiescent Consumption

115 watts

Operating Temp. 

0° to 50° Celsius range; 32° to 122° Farenheit

Protection Features

     DC Protection Servo

0.5V range

     Current Limit Onset

90 amps

     Thermal Threshold

Protects at 85° Celsius, 185° Farenheit

     AC Main Fuses

2 @ 5A 3 AG slo-blo, for 100 - 120 VAC

2 @ 2-1/2A 3AG slo-blo, for 220-240 VAC

Mechanical Specifications

     Dimensions

20" (50.8 cm), W x 7 1/4"  (18.4cm) H x 19.6" (49.9 cm) D

     Weight

72 lbs (34.0) kg net

Warranty 

3 years parts  and labor

All information and specifications provided herein are subject to change owing to the evolutionary nature of Spectral designs and technology. 
All Spectral products are covered by a three-year limited warranty for parts and labor.