RA500

RA500 Reference Amplifier


Power your studio monitors, headphones, or home theater with Alesis Reference Amplifiers. Offered in three power categories, the RA series is quiet, efficient, and cool-operating for the demanding studio environment. The good looks and attractive prices simply add to the value of RA150, RA300, and RA500 amplifiers.

RA amplifiers provide more power and better performance at a lower cost-per-watt with crisp, clean signal. Designed for studio use, each RA amplifier incorporates advanced convection cooling for outstanding heat dissipation. The result is long, stable operation that is unaffected by heat-related complications, devoid of the noise of fan-cooling.

Whether you use RA series amplifiers to power studio monitors, headphones, or home theater speakers, you'll enjoy their reliable, consistent performance.

Features

  • Quiet, cool, efficient class AB power amplifier
  • More power and better performance at a lower cost-per-watt than competitive amplifier
  • Crisp, clean signal
  • Advanced convection cooling for outstanding heat dissipation
  • Inputs: XLR3F, 1/4" TRS, RCA
  • Switchable voltage (120/230 VAC)
  • Front-panel volume controls

Specs

  • Size:
    • 18.9" W x 5.63" H x 10.71" D
    • (480mm x 143 mm x 272 mm)

  • Rack Units:
    • 3RU Height

  • Weight:
    • 28.5lbs = 13.0Kg

  • Rated output, per channel:
    • 4 ohms @ 1kHz, .02% THD+N
    • 250 watts RMS per channel
    • 8 ohms @ 1kHz, .05% THD+N
    • 150 watts RMS per channel
    • 8 ohms, bridged mono mode
    • 500 watts RMS

  • Signal-To-Noise Ratio:
    • 105dB, 22Hz-22kHz bandwidth referenced to rated output

  • Frequency Response:
    • 10Hz – 70kHz +0, -3dB

  • Damping Factor:
    • 200

  • Slew Rate:
    • 60 V/μs (two channel), 120 V/μs (bridged mono)

  • Input Sensitivity:
    • +4dBu (1.23 V) for rated output with input control at maximum

  • Maximum Input Level:
    • +26 dBu

  • Input impedance:
    • 20k Ω, balanced, 10 kΩ unbalanced

  • Crosstalk:
    • 85dB, 1kHz

Documents & Images

Docs and Downloads

  • RA500 - Reference ManualOpen

Images

Images