Cloud CVA4250 Energy Efficient Power Amplifier with DSP, 4x 250 W @ 4 Ohms or 70V / 100V Line

The Cloud CVA4250 Energy Efficient Power Amplifier from Cloud's new range of energy efficient, class-leading amplifiers with the introduction of its new CVA-Series digital multi-channel digital amplifiers.

All models in the CV-Digital series offer a total power output capability of 1KW, shared across the amplifier channels. This flexible approach allows a single, multi-channel amplifier, to drive loudspeaker systems differing in load size, in different areas of a building or venue, whilst optimising overall power output capability. (100v only)

A full suite of user configurable DSP functionality is on-board the CVA-Digital series, which includes input routing, multi-band parametric room and speaker optimisation EQ, output level control and limiting, and 1.5s of assignable delay. Amplifiers can be easily set up for multi-channel or parallel channel operation and bi-amping, with full control of crossover parameters.

Providing the same DSP power as the normal amplifier channels, the auxiliary outputs can be configured as traditional slave outputs, or used as independent signal processing and routing channels.

The CVA-Digital series amplifiers are compatible with standard Cloud RL Series remote level control plates. DSP parameters are accessible via RS-232 and Ethernet, for interfacing to third-party control systems including Crestron, AMX, Control4 etc. A 3-way GPIO port can be configured for external master mute and fault condition signalisation.

Cloud CVA4250 Energy Efficient Power Amplifier Features

- Advanced design of 2, 4 and 8-channel Class D power amplifiers
- Standard "out-of-the-box" Cloud amplifier functionality: requires no computer configuration or internal access for basic 100 V-line or 4Ω operation
- Transformerless output stage drives 70/100 V-line and low impedance systems directly
- On 4 and 8 channel models (only in 70/100 V-line mode), power sharing allows odd and even channel groups to deliver a maximum of 500 W each
- Thermal protection, overcurrent limiting and DC offset protection
- Switch-on delay for speaker protection during power-up
- Per-channel, front panel LEDs for signal presence, peak level, protection activity and power/thermal limiting status
- Balanced line level inputs
- Per-channel output level controls
- Rear panel input routing switches configure amplifier for manual selection of multichannel, stereo or mono operation
- Rear panel switches select 70/100 V-line or low-impedance output levels
- Per-channel high-pass filter (65 Hz default frequency: adjustable in software) to protect against transformer saturation in 70/100 V-line systems
- Balanced, line level auxiliary outputs with full channel functionality, configurable and controllable via software
- Independent Automatic Power Down on odd and even channel groups; minimises power consumption in absence of an input signal
- <3 W power consumption with all channels quiescent
- RS-232C serial port for remote control of all amplifier functions, including DSP configuration
- Compatible with standard Cloud RL Series remote level control plates (per-channel)
- Remote Power Down control input
- 3-way GPIO port for master mute function or fault reporting
- Variable speed forced-air cooling
- 2U 19-inch rackmounting units

Cloud CVA4250 Energy Efficient Power Amplifier Specifications

- Output connectors: 2-pole 5 mm-pitch plug-in screw-terminal connectors
- Remote level control connectors:
  - 3-pole 5 mm-pitch plug-in screw-terminal connectors
  - Compatible with Cloud RL Series remote control plates
- Power input: 85 to 264 V AC, 40 to 60 Hz
- Mains protection: Class 3T 250 V fuse, 20 x 5 mm, rating T8A
- Normal Operating Temperature: 0 °C to 35 °C (Note performance and specifications cannot be guaranteed outside this range)
- Power Consumption:
  - Standby: 2.43 W, 24.0 VA
  - Idle: 38.9 W, 60.0 VA
  - 1/8th power: 187.4 W, 227.2 VA
  - 1/3rd power: 330.1 W, 368.8 VA
- Heat loss:
  - Standby: 8.7 KJ/hr (8.3 BTU/hr)
  - Idle: 140.1 KJ/hr (132.9 BTU/hr)
  - 1/8th power: 217.9 KJ/hr (206.7 BTU/hr)
  - 1/3rd power: 263.5 KJ/hr (249.9 BTU/hr)
- Amplifier Protection:
  - Overcurrent
  - DC
  - Switch-on delay
- Status Indicators: Protection active, Signal peak, and Signal present
- Cooling: Variable speed fan
- Output Power: Total output power 1 kW, all channels
- Output Voltage: 70/100v line (RMS) / 4Ω / 8Ω / 16Ω low-impedance.
- Frequency Response: 20 Hz to 20 kHz, +/-0.5 dB
- High Pass Filter:
  - -3 dB @ 65 Hz via rear panel switches
  - -3 dB @ 20 Hz to 200 Hz via DSP configuration
- Distortion: 0.03%THD @1 kHz, 1 dB below rated output
- Noise: -94 dB, 22 Hz to 22 kHz
- Crosstalk:
  - < -90 dB @1 kHz, -82 dB @10 kHz adjacent channels
  - <-107 dB @1 kHz, -93 dB @10 kHz non-adjacent channels
  - All tested with 125 W load

Inputs:
- Connectors: 3-pole 3.5 mm-pitch plug-in screw-terminal connectors
- Sensitivity: 0 dBu (0.775 Vrms)
- Input Impedance: 10 kΩ (balanced); 5 kΩ (unbalanced)

Physical:
- Dimensions (W x H x D): 482.6 x 88 x 381.8 mm
- Weight: 7.26 kg