Specifications
Features:
• Compact size – up to 3200 watts in 2 rack spaces
• High-current toroidal transformers for greater 2-ohm power
• 21-position detent gain control knobs for consistent settings
• Front panel LED display: Power, bridge and parallel LEDs and signal,
-20dB, -10dB, 0dB, clip and protect LEDs for each channel
• Protection: short circuit, output current limiting, thermal, DC
offset, turn on/off muting, RF protection and circuit breaker
• Clip limiters reduce distortion without sacrificing peak performance
(defeatable on US-3000/US-4000)
• Sub-sonic filters protect speakers and increase headroom (defeatable)
• Balanced combo XLR and 1/4” TRS input connectors and link XLR output connectors
• 5-Way binding post and SpeakonTM outputs
• Low-noise cooling fans with continuously variable speed and highly
efficient front-to-rear forced air keeps the amplifiers cool
Power:
- Stereo Both Channel Driven @ 1kHz, 1%THD
8 Ohms: 500 watts
4 Ohms: 800 watts
2 Ohms: 1200 watts
- Bridged Mono @ 1kHz, 1%THD
8 Ohms: 1600 watts
4 Ohms: 2400 watts
- Input Sensitivity: 1.23 Vrms (+4 dBu) for full power @ 4 Ohms
- Input Impedance: 30K ohms Balanced/15K ohms Unbalanced
- Frequency Response: 0/-0.5dB: 20Hz – 20kHz; 0/-3dB: 5Hz – 60kHz
- Signal to Noise Ratio: Better than 100dB (20Hz – 20kHz)
- Distortion (SMPTE-IM): Less than 0.03%
- Output Circuitry: H
- Cooling: Continuously variable speed fan, front to rear
- Protection: Short circuit, thermal, current limit, dc offset, AC current inrush, RF protection, subsonic, turn on/off muting
- Connectors:
Input: Combo female XLR & 1/4″ TRS jack. Link: Male XLR
Output: Both 5-way biding post and Speakon
- Controls:
Front: Power on/off switch, volume controls for each channel
Rear: Mode switch (stereo / parallel / bridge), HPF on/off, Limiter on/off (US3000/4000)
- Indicator: Power, parallel, bridge. Each channel: Signal, -20dB, -10dB, clip, protect
- Power Requirements: 115/230V 60/50Hz factory configured
- AC consumption: Both channels driven at 4 Ohm load, at 115Vac (for 230V divide by 2)
- Controls: Front: Power on/off switch, volume controls for each channel
- Typical level, 1/8 power pink noise: 7A
- Severe level, 1/3 power pink noise: 14.8A
- Dimensions: 19″ (482mm) x 3.5″ (88mm) x 17.2″ (438mm)
- Net weight: 49lb (22.3kg)
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