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Cloud CXV425

RRP $2,799.00
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Product Overview

The Cloud CXV-425 is a high-power, 4-channel power amplifier designed specifically for driving 100 V-line speaker systems. The CXV-425 belongs to a new range of Cloud amplifiers whose design dispenses with conventional output transformers. They are the perfect solution for large commercial and industrial applications.

The availability of new high-voltage semiconductor devices, combined with other advances in circuit design have made the implementation of a transformerless output stage a practical proposition, resulting in a considerable saving in cost and weight over conventional 100 V-line amplifiers. Omitting the transformer also results in improved audio performance, producing an extended frequency response and lower distortion figures when compared with earlier, transformer-coupled output designs. This makes the CXV-425 suitable for use with 100 V-line systems required to reproduce music with good fidelity.

The CXV-425 is a four-channel amplifier in a 3U chassis. Each channel can deliver 250 W into 40 ohms. The amplifier is forced-air cooled by two rear-mounted, thermostatically-controlled fans. The output stage is protected against DC, over-temperature and short-circuits, and a switch-on delay isolates the output terminals until internal voltage rails have settled.

Each channel is provided with an electronically-balanced line input, a rear-panel preset gain control and an input routing system which simplifies 1, 2 or 4-channel operation with mono or stereo signals. A variable-frequency high-pass filter is also included to minimise the possibility of loudspeaker transformer saturation. Front panel signal presence, peak level and protection LEDs are fitted.

Optional per-channel VCA cards are available for the CXV-425, making it compatible with standard Cloud RL-1 remote level control plates. Plug-in Bose® EQ cards are also available.

Applications

Features

The increase in high quality 100v solutions has created a need for high quality and higher output amplifiers. Traditional transformer output 100v line amplifiers are inherently fraught with problems; bulky and heavy with limited frequency response and prone to saturation, all at a high cost. The transformer-less topology employed in this design will give the Installer/Contractor the perfect solution for larger commercial and industrial applications.

Features

• Transformerless output stage for directly driving 100 V-line systems
• 250 W/channel output power
• Output stage clip limiter
• Output DC protection
• Thermal protection
• Switch-on delay for speaker protection
• Front panel per-channel Protect, Peak and Signal LEDs
• Balanced line inputs (0 dBu)
• Per-channel level controls
• Input routing switches
• Per-channel high-pass filter, adjustable 20 Hz – 200 Hz
• Optional per-channel Bose® EQ cards available
• Per-channel VCA card option permits remote volume control
• Compatible with Cloud RL-1 remote control panel
• Dual fan forced-air cooling
• 3U rack-mounting unit

Specifications

Performance
Output Power/Ch. 100 Vrms; 250 W into 40 Ω min. load
Frequency Response 20 kHz -0.6 dB; LF response
dependent on filter setting
High Pass Filter -3 dB @ 20 Hz – 200 Hz variable
Distortion <0.04% @ 1 kHz & 1 dB below
limiting, 40 Ω load
Crosstalk -80 dB @ 10 kHz
Inputs
Type & connectors Electronically balanced; 3-pin,
3.5 mm-pitch plug-in screw terminal
connectors (4)
Sensitivity 0.775 Vrms (0 dBu)
Input Impedance 10 kΩ balanced, 5 kΩ unbalanced
Noise (rms) -96 dB, 22 Hz – 22 kHz,
relative to 100 Vrms

General
Output Connectors 2-pin 5 mm-pitch plug-in screw
terminal connectors (4)
Power input 230 V ±5%
Fuse rating 230 V, 5 A
Fuse type T5A, 20 mm x 5 mm 250 V
Protection Clip Limiting, VI Limiting, DC Offset,
Thermal & switch-on delay
Status Indicators LED Indicators on each channel for
Signal, Peak & Protect
Cooling Force cooled; internal variable speed
DC fan
Dimensions (W x H x D) 482.6 x 132.5 (3U) x 332 mm
(+ connectors)
Weight 21 kg net

Product Downloads

  • CXV425 user manual PDF 1.4 MB

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*Prices are in AUD, include GST and are subject to change. Please call National Audio for pricing and availability on the CXV425.