Car audio amplifier JBL Club A5055 5 channels 500 W

The JBL Club A5055 5-channel car amplifier outputs dedicated power for front, rear and subwoofer channels and is designed to integrate with both aftermarket and factory audio systems. It provides strong subwoofer power and flexible crossover controls while offering speaker-level inputs for easy installation with factory head units.

Advantages

The amplifier offers a higher subwoofer-to-full-range power ratio than typical 5-channel designs, delivering substantial RMS power to the sub channel while still powering front and rear speakers. Adjustable high-pass and low-pass crossovers for front and rear channels give precise control over frequency roll-off, and the sub channel includes a low-pass crossover, selectable bass boost and phase switch to optimise low-frequency output. Speaker-level inputs enable compatibility with factory radios.

Suitable for

• Upgrading a factory car audio system while retaining the OEM head unit
• Powering a 2-way front and rear speaker setup plus a powered subwoofer
• Small to mid-size vehicles requiring boosted subwoofer output
• Systems where bridging to 3-channel operation is desired

Key specifications

• Channels: 5
• Max power (total): 500 W
• RMS power (per front/rear): 50 W RMS per channel (manufacturer claim)
• Bridged front output: 140 W RMS (when bridged to 3-channel mode, manufacturer claim)
• Subwoofer channel: 500 W RMS (manufacturer claim)
• Inputs: speaker-level inputs
• Crossovers: separate high-pass and low-pass for front/rear, low-pass for sub
• Additional features: selectable bass boost, phase switch
• Brand: JBL
• Model: Club A5055 (MPN: AMPCBA5055, EAN: 6925281968808)

How to use

Install the amplifier according to vehicle wiring best practices, connecting power, ground and remote turn-on leads to the vehicle electrical system. Use speaker-level inputs to connect the amplifier to the factory head unit if no low-level outputs are available. Connect front and rear speakers to the respective channels and the subwoofer to the dedicated sub channel. Set crossovers and bass boost to match speaker types and enclosure characteristics, and use the phase switch to align subwoofer timing with the main speakers.

Usage recommendations

For reliable performance, ensure the amplifier is fused correctly at the battery, use appropriate gauge power and ground wiring, and allow adequate ventilation. Start with conservative gain and crossover settings, then fine-tune by ear at moderate volume to avoid speaker or amplifier overload.