Ashly KLR4000


The Ashly KLR-Series amplifiers are high-efficiency, lightweight, twochannel, high power amplifiers incorporating the latest technologies
delivering quality and value for professional quality performance at an extremely affordable price. Whether your application is professional
audio or fixed performance installation, KLR amplifiers are optimized to provide reliable audio performance with sonic perfection.

Covering a power range from 1000 to 2500 watts per channel at 2 ohms (20Hz-20kHz, 1% THD), the KLR-2000, KLR-3200, KLR-4000 and KLR-5000 are perfectly suited for a wide range of sound reinforcement. All four KLR amplifiers are optimized to deliver high
levels of sustained power, extraordinary audio performance, and road-proven reliability into 2, 4, or 8 ohm loads and are housed in a
a uniform, rugged 2RU chassis. Each KLR amplifier uses a state-ofthe- art Switch Mode Power Supply which assures you of flawless lows,
punchy mids and pristine highs. The output topography of the KLR-2000 is Class-AB, while the KLR-3200, KLR-4000, and KLR-5000 are a two-step Class-H design. KLR-Series protection circuits include: output over-current protection, DC output protection, chassis internal temperature monitoring, inrush limiting and a mains circuit breaker (internal fuse on KLR-5000).

Front panel features include: individual input attenuators, signal, clip and protect LEDs, air inflow vents with removable dust filters, power
switch and power LED. Rear panel features include: balanced inputs via 3-pin Euroblock, combo XLR/ ¼” TRS connectors, four pin
Speakon type output connectors, 3-position gain switch, 3-position mode switch (bridged, stereo or parallel mono), 3-position HPF switch
(30Hz, 50Hz or off), on/off limiter switch, air outflow vents and a permanently attached power cord.

Ashly KLR-4000 Features:

  • Balanced inputs via 3-pin Euroblock and combo XLR/ 1/4" TRS connectors
  • Switch mode power supply provides high efficiency and low weight
  • Forced air cooled (front in, rear out)
  • Removable dust filters
  • Front mounted attenuators
  • Rack ears for permanent installation in a standard 2RU enclosure
  • Speakon type output connectors
  • 3-position gain switch for both channels
  • 3-position mode switch (bridged, stereo or parallel mono)
  • 3-position HPF switch (30Hz, 50Hz or off)
  • On/off limiter switch
  • Permanently attached power cord
  • Extensive protection circuitry
  • Safety/Compliance: cCSAus, CE, FCC, RoHS

Ashly KLR-4000 Specifications:

  • Rated Power Output PerChannel:
    • Stereo Mode, both channels driven:
      • 8 Ohms, 20 Hz - 20 kHz, 1% THD: 850W
      • 4 Ohms, 20 Hz - 20 kHz, 1% THD: 1400W
      • 2 Ohms, 20 Hz - 20 kHz, 1% THD: 2000W
    • Bridged Mono Mode: 4 Ohms, 20 Hz - 20 kHz, 1% THD: 4000W
  • Line Current Draw (all channels driven @ 4Ohms):
    • Idle: 1.05A
    • 1/8th Power Pink Noise: 14.0A
    • 1/3 Power Sine Wave: 19.8A
    • S/N (20 Hz-20 kHz, unweighted): >109dB
  • Thermal Dissipation(all channels driven @ 4 Ohms):
    • Idle (BTU/hr): 171
    • 1/8th Power Pink Noise (BTU/hr): 2489
    • 1/3 Power Sine Wave (BTU/hr): 3516
    • Input Gain Switch: 1V, 26dB, 32dB
  • Signal to NoiseRatio:
    • 20Hz-20kHz, rated power @ 8 Ohms unweighted: >109dB
    • Output Circuitry: 2 Step Class H
  • Weight: 26.7 lbs (12 kg)
  • Frequency Response 1W @ 8 Ohms 20Hz – 20kHz (-3dB down point): +0.3dB, 5Hz – 70kHz
  • Damping Factor – 100Hz @ rated power @8 Ohms: >380
  • THD 20Hz-20kHz: 10dB below rated output @ 4 Ohms
  • Input Impedance: 12 kOhm, balanced
  • HPF: 30Hz, 50Hz, Off (12dB/Oct)
  • Amplifier Protection: Output Overcurrent, DC Output, Chassis Temperature, Mains Breaker
  • Cooling: Variable Speed Fan, Front-to-Rear Air Flow
  • Front Panel Indicators: Protection/Clip, Signal, Power
  • Attenuators: Per Channel, Front Panel
  • Input Connectors each channel: 3-pin Euroblock, XLR, 1/4" TRS Phone Jack
  • Output connectors, each channel: 4-pin Speakon type
  • Operating Temperature/Humidity Temperature: -10 C to +40 C / Humidity: 0% to 90%
  • Power Cable Connector 3-prong NEMA 5-15 (5-20 for KLR-5000)
  • Dimensions 19" W x 3.5" H x 16" D (482 x 88 x 407 mm)
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