1-Channel Subwoofer Amplifier (500 watts x 1)

Sold from 2014 until now

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Product Specifications

Max Power
770W X 1
Rated Power
350W RMS x 1 @ 4 ohms,500W RMS x 1 @ 2 ohms
Input sensitivity/impedance (low-level input)
100mV – 2V/>7k ohms
Input Sensitivity/Impedance (speaker-level input)
Input sensitivity/impedance (speaker-level input) 2V – 15V/120 ohms
Fuse Replacement
25A x 2
6.4 lb (2.9kg)
greater than 80dB ref. 1W
Frequency Response
20Hz – 200Hz (±0.5dB); 10Hz – 300Hz (±3dB)
Height (in)
Width (in)
Depth (in)
Height (mm)
Width (mm)
Depth (mm)

Compact style. Killer sound.

The JBL GTX500 is the ideal upgrade for those car audio enthusiasts who want exceptional bass without breaking the bank. And don’t let its size fool you. While the GTX500 may be compact, with a max power output of 750 watts you can drive your subs as you see fit. While its true JBL sound sets it apart from other subwoofer amps, it’s ease-of-use and installation, configuration and calibration makes it truly stand out—it connects to OEM or aftermarket systems without complicated adapters or setup routines.

Cars are small, and the space inside them is a challenge to audio engineers. But the GTX500 gives you big, commanding sound. You’ll have 350 watts of RMS at an impedance of 4 ohms, 500 watts at 2 ohms and 770 watts at peak power.
The GTX500’s variable crossover allows you to optimize tuning based on your speaker location and specific components. And you can do it whether you’re a rocket scientist or not.
With a frequency response of 10Hz to 280Hz, the GTX500 reproduces deep bass tones cleanly. Its full-range preamp outputs allow for multiple hookups without high-loss Y-adapters or signal splitters. Music reaches the amp and passes through it with clarity and fidelity.

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