Electro-Voice CPS4.5 - 4-Channel Power Amplifier

PA SKU # EV CPS45120V MFR # F.01U.101.298 UPC # 800549363617
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  • Product Highlights
  • 500 W per channel
  • Four channels
  • 70/100 V operation
  • Class-D design
  • Phoenix-type input and output

500 W/CH 4‑CH Amplifier

CPS4.5 4-Channel Power Amplifier, 4 x 500W into 2, or 4 Ohms, or 70V/100V Direct Drive, 2U, ready for RCM-810 IRIS-Net Remote Control Module, In/Outputs Phoenix Type, 120V

The Electro-Voice CPS4.5 amplifier offers four independent Class-D Variable Load Drive (VLD) amplifier blocks, each one capable of delivering up to 500 Watts into Low-Z or High-Z loads. Per default, each channel can be configured individually for max. power output into either 2 Ω, 4 Ω, 70V- or 100Vnetworks without involvement of any output transformers. Being designed for professional audio installation market, special care was taken for long term cost of ownership parameters: In addition to remarkably low current consumption and heat dissipation, the CPS4.5 provides remote standby switching with just 5 Watts consumption in standby mode. An optional remote control module RCM-810 provides control and supervision features via IRIS-Net, including monitoring of amplifier status and real time load supervision. In addition, via RCM-810 the Variable Load Drive characteristics can be set for max. power output into any load between 2 Ω and 10 Ω, in steps of 0.1 Ω.


  • Four channels in one compact rack-efficient unit
  • 500 W per channel
  • 70/100 V operation for distributed systems
  • Class-D design for optimum efficiency
  • Slot for optional RCM-810 module, allowing IRIS-Net control and monitoring
  • IRIS-Net selection of each channel's impedance (2-10 Ω in 0.1 Ω steps)
  • Rear-mounted attenuators
  • Switchable 50 Hz high-pass filter (Hi-Z mode)
  • Complete protection: thermal, overload, shorts, HF, DC, back-EMF, inrush current
  • Phoenix-type input and output connections
  • Remote power-on/off contact
  • Programmable power-on delay settings
  • Front-to-rear fans
  • Weight Net: 24.47lbs (11.1kg)
  • Depth: 16.59" (421.5mm)
  • Width: 19" (482.6mm)
  • Height: 3.47" (88.1mm)
  • Amplifier Gain: 32 dB (Lo-Z), 33 dB (70V), 36dB ((100V))
  • Analog Inputs: 4, electronically balanced, Phoenix-type
  • Audio Network: No
  • CAN Bus Interface: Optional (RCM-810 card)
  • Continuous Rated Power (1 kHz, THD 1%) 100v: 500Watts
  • Continuous Rated Power (1 kHz, THD 1%) 2Ω: 500Watts
  • Continuous Rated Power (1 kHz, THD 1%) 4Ω: 500Watts
  • Continuous Rated Power (1 kHz, THD 1%) 70v: 500Watts
  • Continuous Rated Power (1 kHz, THD 1%) 8Ω: 250Watts
  • Continuous Rated Power (20-20 kHz, THD<0,2%) 100v: 450Watts
  • Continuous Rated Power (20-20 kHz, THD<0,2%) 4Ω: 450Watts
  • Continuous Rated Power (20-20 kHz, THD<0,2%) 70v: 450Watts
  • Continuous Rated Power (20-20 kHz, THD<0,2%) 8Ω: 225Watts
  • Cooling: Front-to-Rear, continuously variable fans
  • DIM 30: 0.02%
  • Electronics Type: Amplifier
  • Frequency Response (-3 dB): 15 Hz-30 kHz
  • Impedance: 2/4/8/8 VLD/70 V/100VΩ
  • Input Impedance (Balanced): 20kΩ
  • Input Sensitivity: 0 dBu (.775V)-2ω, +3 dBu (1.1V)-4/8ω, +6 dBu (1.55) 70V/100V
  • Intermodulation Distortion (SMPTE): 0.05%
  • Mains Voltage: 220 - 240 V, 50 - 60 Hz or 120 V, 50 - 60 Hz, 50 - 60 Hz
  • Maximum Bridged Output 4Ω: 1000Watts
  • Maximum Bridged Output 8Ω: 1000Watts
  • Maximum Input Voltage: +22 (9.76 Vrms)
  • Network Control (IRIS-Net): Optional (RCM-810 card)
  • Signal-to-Noise Ratio (A-weighted): 100dB
  • Slew Rate: 28V/µs
  • Topology: Class-D
  • Total Harmonic Distortion: 0.05%
  • Variable Load Drive (VLD): Yes
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