B-52 Pro Audio Now Available @ Sweetwater Sound Inc.

US-1200

The Beauty of Power
    The latest additions to the industry-proven US-Series are two professional 2U heavy-duty power amplifiers for the most challenging applications. The US-1200 are built on a rugged, heavy gauge 2U 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 dual aluminum heatsinks and an oversized toroidal transformer, combined with comprehensive protection circuitry and dual large variable speed fans provide worry-free and reliable operation in the most demanding environments.


    Product Specs

    Model
    US-1200
    US-1800
    US-3000
    US-4000
    << Stereo Both Channel Driven @ 1kHz, 1%THD >>
    8 Ohms
    210 watts
    300 watts
    500 watts
    700 watts
    4 Ohms
    330 watts
    475 watts
    800 watts
    1100 watts
    2 Ohms
    430 watts
    700 watts
    1200 watts
    1600 watts
    << Bridged Mono @ 1kHz, 1%THD >>
    8 Ohms
    650 watts
    950 watts
    1600 watts
    2200 watts
    4 Ohms
    850 watts
    1400 watts
    2400 watts
    3200 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
    AB
    AB
    H
    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
    4.5A
    6.3A
    7A
    9.6A
    power pink noise
    Severe level, 1/3
    7A
    9.6A
    14.8A
    19.8A
    power pink noise
    Dimensions
    19” (482mm) x 3.5” (88mm) x 17.2” (438mm)
    Net weight
    28lb (13kg)
    35lb (16kg)
    43lb (19kg)
    49lb (22.3kg)

    Product Features

    • Up to 850 watts in densely packed 2U enclosure
    • 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
    • Balanced combo XLR and 1/4" TRS input connectors and link XLR output connectors
    • Both binding posts and SpeakonTM output connectors
    • Low-noise cooling fans with continuous variable speed and highly efficient front-to-rear forced air cooling design
    • Washable open cell foam air filters
    • Blue LED strips on front panel
    • Soft start circuit to reduce in-rush AC current