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


Professional Power Amplifiers
    The latest additions to the industry-proven US-Series are two professional 3U heavy-duty power amplifiers for the most challenging applications. The US-5000 and US-6000 are built on a rugged, heavy gauge 3U 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 Features

    • Up to 5500 watts in densely packed 3U 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
    • Defeatable clip limiters to reduce distortion without sacrificing peak performance
    • Defeatable 30/50Hz sub-sonic filters to protect speakers and increase headroom
    • 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
    • Replaceable open cell foam air filters with easy access through front panel
    • Dimmable blue LED strips on front panel
    • Soft start circuit to reduce in-rush AC current

    Product Specs

    << Stereo Both Channel Driven @ 1kHz, 1%THD >>
    8 Ohms
    900 watts
    1150 watts
    4 Ohms
    1500 watts
    1900 watts
    2 Ohms
    2150 watts
    2750 watts
    << Bridged Mono @ 1kHz, 1%THD >>
    8 Ohms
    3000 watts
    3800 watts
    4 Ohms
    4300 watts
    5500 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
    3-tier class H
    Dual continuously variable speed fans, front to rear
    Short circuit, thermal, current limit, DC offset, RF protection,
    AC soft start with inrush current limit, turn on/off muting
    Input: Combo female XLR & 1/4” TRS jack. Link: Male XLR
    Output: Both 5-way biding post and Speakon™
    Front: Power on/off switch, volume controls for each channel
    Rear: Mode switch (stereo / parallel / bridge), HPF 30Hz/50Hz/Off,
    Limiter on/off, LED STRIPS on/dim/off
    Power, parallel, bridge. Each channel: Signal, -20dB, -10dB, clip, protect
    Power Requirements
    120/230V 60/50Hz factory configured
    AC consumption
    Both channels driven at 4 Ohm load, at 120Vac (for 230V divide by 2)
    AC connect   120V: fixed cord - NEMA 5-15 plug   120V: fixed cord - NEMA 5-20 plug

    230V: IEC inlet on chassis; power cord with CEE7/7 plug
    Typical level, 1/8
    power pink noise
    Severe level, 1/3
    power pink noise
    19" (482mm) x 5.25" (132mm) x 19.3" (492mm)
    Net weight
    76.2lb (34.6kg)
    81.5lb (37kg)