VA4120 | VA4120

VA4120

Art.-Nr.: VA4120

Cloud Electronics is a solely-owned British company based in Sheffield that designs, engineers and manufactures high- quality audio mixers, zoners, multi-channel amplifiers, and headphone distribution systems including the DCM-1 Digitally Controlled Mixer and the renowned VTX series of amplifiers. The company’s commercial audio products are designed with installation applications in mind and all are built and tested to the most exacting professional standards, to ensure outstanding reliability and consistent performance. Cloud Electronics products are distributed worldwide under the “Cloud” Brand.

Overview

4x 120 W 100V Power Amplifier

The Cloud VA4120 is a cost-effective audio power amplifier for use in all types of commercial premises. It has been designed to be as simple to install and operate as possible.

The VA4120 has four channels with 120 W output power each. The amplifier can drive either low-impedance loudspeakers directly (4 ohms minimum) or 25/70/100 V loudspeaker distribution systems.

The amplifiers incorporates 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 systems.

The front panel has a set of LEDs for each channel, confirming signal presence, excessive level and amplifier protection activity. Both models are forced-air cooled by fans mounted on the rear panel.

Product Details

Industrial quality four-channel power amplifiers
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
Forced-air cooling

20 Hz to 20 kHz, +/-1 dB

47 kohms

16 dB

< -85 dB (22 kHz bandwidth)

4 x 120 watts

4 ohms, 5.2 ohms (25 V), 41 ohms (70 V), 83 ohms (100 V)

20 Hz to 20 kHz, +/-1 dB

< 0.05% @ 1 kHz

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

115 VAC or 230 VAC, ±10%; 45 – 65 Hz

0 °C to 35 °C

Forced air cooling: 1 x 80 mm dia. fan, Airflow direction: front-to-back

24.5 W (Idle), 418 W (1/8th Power), 562 W (1/3rd Power)

99 KJ/hr (93.9 BTU/hr) (Idle), 1,288 KJ/hr (1,221 BTU/hr) (1/8th Power), 1,591 KJ/hr (1,508 BTU/hr) (1/3rd Power)

482.6 (19") x 88 mm (2U) x 408 mm

18.2 kg