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Details

The Cloud VA4120 power amplifier offers four channels each delivering 120 watts. For use on low impedance audio systems (4 ohms minimum) or 25 / 70 / 100 volt line distributed sound systems.

Also available in a two channel version - see VA2120.

This mixer is part of the new Cloud Contractor Series of equipment offering excellent value for money.

The amplifier benefits from a limiter in each channel to protect the output stage and connected loudspeakers: this reduces excessive signal levels to ensure that clipping does not occur. Further protection circuitry disconnects the output if the maximum permitted internal temperature is exceeded, or if DC is detected at the output terminals.

All connections and controls are on the rear panel. Each channel has a preset level control and a switchable high-pass filter to mitigate the effect of transformer saturation at low frequencies when driving 25/70/100 V-line systems.

The front panel has an LED display which confirms signal presence, excessive level and amplifier protection activity for each channel.

Features

  • Industrial quality four-channel power amplifier 
  • Power output: 120 W/channel 
  • Outputs suitable for either low-impedance (min. 4 ohm) or 25/70/100 V-line systems 
  • Balanced inputs with per-channel gain preset controls 
  • Per-channel 65 Hz high-pass filter, for use with 25/70/100 V-line systems 
  • Per-channel limiter – prevents clipping
  • Over-temperature and output DC protection
  • 230 V or 115 V operation
  • Forced-air cooling

Additional Information

Line Inputs

Frequency Response

20 Hz to 20 kHz, ±1 dB

Input impedance

47 kohms

Headroom

16 dB Noise <-85 dB (22 kHz bandwidth)

Speaker Output

Output Power
(1 kHz continuous sine wave)

2 x 120 watts

Minimum load

Low-Z output 4 ohms
High-Z output 25 V-line 5.2 ohms
70 V-line 41 ohms
100 V-line 83 ohms

Frequency response

Low-Z output: 20 Hz to 20 kHz, ±1 dB
High-Z output 20 Hz to 20 kHz, ±1 dB (hi-pass filter off)

THD + N

< 0.05% @ 1 kHz

Protection

Fixed level signal limiter: DC, over-current and over-temperature protection

General

Power input

Selectable 115 VAC or 230 VAC, ±10%; 45 – 65 Hz

Dimensions Net (w x h x d)

 482.6 mm x 88 mm (2U) x 310 mm 19” x 3.5” x 12.2”

View FileCloud VA2120 & VA4120 Datasheet    Size: (643.68 KB)
View FileCloud VA2120 & VA4120 User Manual    Size: (876.28 KB)
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List price Ex. VAT: £375.00
       
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