Cloud CVA4250 Energy Efficient Power Amp with DSP 4x250W LowZ/100V 2U

• 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
• Nominal power ratings:2 x 500 W (CVA2500), 4 x 250 W (CVA4250), and 8 x 125 W (CVA8125)
• 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” rackmounting units

• 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 kohms (balanced); 5 kohms (unbalanced)

General

• 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
• Dimensions (W x H x D): 482.6 mm x 88 mm x 381.8 mm (19 in x 3.46 in x 15.03 in)
• Weight: 7.26 kg (16.26 lb)