ETI Sound Systems, INC US-3000 - Manual (Page 7)

B-52 US Series Professional Power Amplifiers - Instruction Manual
THE BEAUTY OF POWER US SERIES AMPLIFIERS
AMPLIFIER FEATuRES
The US-Series features four professional heavy-duty power amplifiers, covering a wide range of
output power ratings. The models are US-1200, US-1800, US-3000 and US-4000. US-Series
amplifiers are built on a rugged, heavy gauge steel chassis with a sturdy aluminum front panel.
The amplifiers use advanced circuitry and a well-designed PCB layout to ensure quality sound
and enhanced reliability. Large aluminum heatsinks and an oversized toroidal transformer, com-
bined with comprehensive protection circuitry and variable speed fan(s) provide worry-free and
reliable operation in the most demanding environments.
• Compact size - up to 3200 watts in two rack spaces
• Rugged heavy gauge steel enclosure with sturdy aluminum front panel for stability
and increased longevity
• High-current toroidal transformers for increased 2-ohm power output
• 21-position gain control knobs for consistent settings
• Selectable STEREO, PARALLEL MONO and BRIDGED MONO modes for flexibility
• 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 to reduce distortion without sacrificing peak performance (defeatable on
US-3000/US-4000)
• Sub-sonic filters to protect speakers and increase headroom (defeatable)
• Balanced combo XLR and 1/4” TRS input connectors and link XLR output connectors
• Both binding posts and Speakon™ output connectors
• Low-noise cooling fans with continuous variable speed and highly efficient front-to-rear
forced air cooling design
• Replaceable open cell foam air filters
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