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Cicada Audio 125W x 4-Channel Class-D Amplifier - FLX500.4

Model # FLX500.4
Abt # FLX5004
  • 125W X 4-Channel Amplifier
  • Small Footprint Design
  • Variable Low-Pass Crossover
  • Class-D Amplification
  • Variable High-Pass Crossover
  • 9V-16V Operating Voltage
  • 80% Total Efficiency
  • REM/DC/VOX Turn-On Configuration
  • Brushed Aluminum Finish
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Cicada Audio FLX500.4 125W x 4-Channel Class-D Amplifier

The Cicada Audio FLX500.4 compact four-channel Class-D amplifier delivers 125W x 4 RMS at 2 ohms and 95W x 4 RMS at 4 ohms, rated at 14.4V. Designed for motorcycles, powersports, marine installations and small automotive systems, it combines 80% efficiency with adjustable LPF / FULL / HPF filtering and a 0.2V - 12V gain range. The space-saving aluminum chassis brings clean power to installations where mounting room and charging-system capacity are limited, while REM / DC / VOX turn-on choices support integration with factory or custom audio systems.

Key Features

Compact Chassis, Flexible Channel Configuration

Motorcycle fairings, saddlebags and automotive kick panels leave little room for amplification. The small-format chassis is designed for these confined mounting areas without giving up system flexibility. For a two-channel layout, bridged mode supplies 250W x 2 RMS at 4 ohms with a 14.4V supply.

Efficient Class-D Power

When a vehicle has limited charging-system capacity, efficiency matters alongside output. The Class-D design is intended to reduce heat generation and electrical demand while supplying substantial audio power, making it suited to space-constrained vehicle installations.

Adjustable Crossovers and Four Filter Slopes

Tailor filtering to the system rather than relying on one fixed setting. Choose low-pass, full-range or high-pass operation, with crossover adjustment from 20 Hz to 20 kHz. Selectable 6, 12, 24 or 48 dB-per-octave slopes add control over how sharply the filter rolls off.

REM / DC / VOX Turn-On Options

Choose the turn-on method that suits the source and installation. Three selectable modes give installers alternatives for factory head units and custom audio arrangements, rather than limiting every setup to a single startup configuration.

0.2V - 12V Source Matching

Match the amplifier's gain setting to the signal feeding it. The broad adjustment range accommodates factory and aftermarket source units, DSPs and high-output preamps, giving installers flexibility across different source configurations.

Aluminum Construction for Demanding Applications

Motorcycle and outdoor audio installations call for more than output alone. An aluminum enclosure and durable components support the amplifier's emphasis on dependable operation in demanding applications.

Features

  • Space-Saving Chassis
    Fits confined mounting areas such as fairings, saddlebags and kick panels.
  • 125W x 4 RMS at 2 Ohms
    Provides four-channel output rated at 14.4V.
  • 95W x 4 RMS at 4 Ohms
    Supports four-channel systems using 4-ohm loads, rated at 14.4V.
  • 250W x 2 RMS Bridged at 4 Ohms
    Offers a two-channel power configuration rated at 14.4V.
  • 80% Efficiency
    Class-D amplification helps limit electrical demand and heat generation.
  • LPF / FULL / HPF Selection
    Adjust filtering across a 20 Hz - 20 kHz crossover range.
  • 6 / 12 / 24 / 48 dB-per-Octave Slopes
    Choose the filter slope to refine system tuning.
  • REM / DC / VOX Turn-On Modes
    Configure startup for factory-system or custom installations.
  • 0.2V - 12V Gain Range
    Accommodates source units, DSPs and high-output preamps.
  • Durable Aluminum Housing
    Supports demanding motorcycle and outdoor audio applications.
California customers:

Frequently Asked Questions

  • Yes. In 2-channel bridged mode, output is rated at 250W x 2 into 4 ohms with a 14.4V supply. Stereo output is rated at 95W x 4 into 4 ohms or 125W x 4 into 2 ohms at 14.4V.
  • Published dimensions are 5.2 x 4.9 x 2.0 in with mounting brackets and 4.0 x 4.9 x 2.0 in for the chassis alone. The compact aluminum housing is intended for space-constrained installations, including motorcycle fairings, saddlebags, and vehicle kick panels. Check the available mounting space against these dimensions before installation.
  • Yes. The 0.2V - 12V gain range accommodates factory and aftermarket source units, DSPs, and high-output preamps. REM, DC, and VOX turn-on options support different factory and custom installation arrangements.
  • Selectable LPF, FULL, and HPF modes let you configure low-pass filtering, full-range operation, or high-pass filtering. The crossover adjustment range is 20 Hz - 20,000 Hz, with selectable slopes of 6, 12, 24, or 48 dB per octave for system tuning.
  • The manufacturer recommends a 50 A fuse. Published current draw is 50 A for music and 80 A maximum, and the operating voltage range is 9V - 16V. Power output ratings are specified at 14.4V.