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

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

Further Product Information Below

Cloud CVA Series Manual (PDF)

Cloud CVA Series Data Sheet (PDF)