forumpoweraudio.ro

USA SPECIFICATIONS USA 400 USA 900 USA 1310
Stereo Mode (both channels driven)
8 ohms 20 Hz-20 kHz 0.01% THD 110W 240W 375W
8 ohms 1 kHz 1% THD 125W 270W 400W
4 ohms 1 kHz 1% THD 200W 450W 655W
2 ohms 1 kHz 1% THD 250W 550W 1000W
Bridge Mono Mode
16 ohms 1 kHz 1% THD 250W 540W 800W
8 ohms 1 kHz 1% THD 400W 900W 1310W
Signal-to-noise (A weighted) 105 dB 104 dB 106 dB
Input Sensitivity @ 8 ohms 1.12 Vrms (+3.2 dBu) 1.16 Vrms (+3.5 dBu) 1.13 Vrms (+3.3 dBu)
Voltage Gain 28x (29 dB) 40x (32 dB) 50x (34 dB)
Cooling Passive 2-Speed Fan 2-Speed Fan
Weight 24 lb 34 lb 54 lb
Power Consumption* <6A <9A <12A
All Models All Models
Distortion (SMPTE-IM) Less than 0.025%
Frequency Response(typical) 20 Hz-20 kHz, +0/-1 dB @ 1 watt
Damping Factor greater than 200
Dynamic Headroom 2 dB at 8 ohms
Input Impedance 10 K ohms unbalanced, 20 K ohms balanced
Controls Front: AC Switch, AC Circuit Breaker
Back: Stereo/Bridge Switch, Ch 1 and Ch 2 Gain Knobs
8 Position DIP Switch for Filter and Limiter
Indicators POWER: Green LED
CLIP: Red LED, 1 per channel
Connectors (each channel) Input: Barrier strip and Neutrik "Combo" 1/4" TRS and XLR, tip & pin 2 positive
Speakers: Touch-proof binding posts
Amplifier Protection Full short circuit, open circuit, thermal, ultrasonic, & protection.
Stable into reactive or mismatched loads.
Load Protection On/off muting, DC-fault power protection
Output Circuit Type Class AB complementary linear outputs
Power Requirements 100, 120, 240 VAC, 50-60 Hz
Dimensions USA 400, USA 900: 19" (48.3 cm) rack mounting, 5.25"
(13.3 cm)tall (3 rack spaces), 9.5" (24.1 cm) deep
USA 1310:19" (48.3 cm) rack mounting, 7.0" (17.8 cm) tall (4 rack spaces),
10.8" (27.4 cm) deep
*1/8 power @ 4 ohms/channel, both channels driven; @ 120 VAC (multiply by 0.5 for 230V operation, by 1.2 for 100V operation)