Cloud VTX4120 4x120 Watt Power Amplifier


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Dale #:CLOU-VTX4120

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  • The Cloud VTX range of four-channel power amplifiers are intended for commercial and industrial public address and sound reinforcement applications where unquestionable long-term reliability is the primary consideration. The VTX4120 offers 4 x 120W into 4 ohms. Designed with precision, the new Cloud range achieves long term high quality acoustic performance, built in accordance with Cloud's principle of reliability, the VTX series is the perfect choice for low maintenance and worry free installations. The VTX4120 can be converted to 100V line output with the optional CXL-800 + CXL-100T transformers per channel.


    • 4 x 120W into 4 ohms
    • Extensive protection against short-circuit and reactive loads, clipping, DC and overheating
    • Optional VTX-WM1 card allows amplifier monitoring from any web browser
    • Per-channel, front panel LEDs for power status, signal presence, peak level and protection
    • Balanced line level inputs with gain trim
    • Input routing switches
    • Bridge mode switches
    • Per channel switched hi-pass filter (18dB/oct below 65Hz)
    • Forced-air cooling
    • Compatible with RL1 remote volume control
    • Optional BOSE EQ cards available
    • 2U 19" rackmounting unit
  • Performance
    Output PowerNormal Mode, continuous sine wave, into 4 Ω.
    Bridge Mode8 Ω
    Frequency Response20 Hz to 20 kHz, +0/-1 dB; (HPF bypassed)
    High Pass FilterSwitchable, -3 dB @ 65 Hz, slope
    18 dB/octave
    DistortionTHD + N <0.03% @ 1 kHz, 1 W
    output, 4 Ω load
    Noise<100 dB below full output power, 20 Hz to 20 kHz
    <103 dB with ‘A’ weighting
    Crosstalk-90 dB @ 1 kHz, -70 dB @ 10 kHz
    Max. VCA attenuation>90 dB
    Type & connectorsElectronically balanced; 3-pin 3.5 mm-pitch plug-in screw terminal connectors (4)
    Max. sensitivity0.775 Vrms (0 dBu)
    Input Impedance10 kΩ, balanced
    Output Connectors2-pin 5 mm-pitch plug-in screw terminal connectors (4)
    Power input230 V ±10% (European version); 110 V
    ±10% (US version)
    Mains protectionBy resettable rear-panel circuit breaker
    Amplifier ProtectionClip Limiting, VI Limiting, DC Offset,
    Thermal & switch-on delay
    Status IndicatorsLED Indicators on each channel for
    Power, Signal Presence, Peak Level &
    CoolingForce cooled; two mid-mounted
    variable speed DC fans
    Dimensions (W x H x D)482.6 mm x 88 mm (2U) x 416 mm (without connectors)
    451 mm (with connectors)
    Weight13.8 kg (net); 15.8 kg (gross)
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