125w x 4CH AMPLIFIER

The FLX500.4 is a compact, high‑efficiency 4‑channel amplifier engineered for motorcycles, powersports, marine, and small‑format automotive systems. Delivering impressive output in a micro‑sized chassis, it’s designed to integrate seamlessly into tight installs while maintaining the clarity, reliability, and dynamic range Cicada amplifiers are known for.

FEATURES

Ultra‑Compact Design

Small‑format chassis engineered to fit inside fairings, saddlebags, kick panels, and other tight mounting locations without sacrificing performance.

High‑Efficiency Class‑D Platform

Delivers strong power output with reduced heat and electrical load, ideal for motorcycles and vehicles with limited charging systems.

Flexible Crossover Control

Selectable LPF / FULL / HPF crossover with a wide adjustment range (20 Hz – 20 kHz) and steep selectable slopes (6 / 12 / 24 / 48 dB per octave) for precision system tuning.

OEM‑Friendly Integration

Multiple turn‑on options — REM, DC, or VOX — make it easy to integrate with factory head units and custom installations.

Precision Audio Control

Wide gain range (0.2V – 12V) accommodates factory and aftermarket source units, DSPs, and high‑output preamps.

Rugged Build Quality

Built with durable components and a compact aluminum housing for long‑term reliability in harsh motorcycle and outdoor environments.

SPECIFICATIONS

RMS Power Output (14.4V)

4‑Channel Stereo Mode:

• 95W × 4 @ 4 Ω
• 125W × 4 @ 2 Ω

2‑Channel Bridged Mode:

• 250W × 2 @ 4 Ω

Performance Metrics

• Signal‑to‑Noise Ratio: 91 dB (A‑weighted, 20 Hz – 20 kHz)
• Operating Voltage: 9V – 16V
• Current Draw (Music): 50 A
• Current Draw (Max): 80 A
• Recommended Fuse: 50 A
• Total Efficiency: 80%
• Frequency Response: 20 Hz – 20 kHz (±3 dB)
• Damping Factor: 200
• THD + N (10% rated power): 0.1% @ 2 Ω per channel

Controls & Configuration

• Gain Range: 0.2V – 12V
• Turn‑On Modes: REM / DC / VOX
• Crossover Modes: LPF / FULL / HPF
• Crossover Range: 20 – 20,000 Hz
• Crossover Slopes: 6 / 12 / 24 / 48 dB per octave

Dimensions

With Mounting Brackets:

• 5.2 × 4.9 × 2.0 in (131 × 125 × 51 mm)

Chassis Only:

• 4.0 × 4.9 × 2.0 in (104 × 125 × 51 mm)