360-watt, subwoofer amplifier

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Maximum Input Signal
4-Ohm Power Output
Total Peak Power Output
Frequency Response
(-3dB) 20Hz–330Hz
Signal-to-Noise Ratio
2-Ohm Power Output

We’ve engineered the compact GTO3501 amplifier to ensure optimum power delivery into numerous impedances. It’s the smallest Grand Touring® Series subwoofer amp – only 270 cubic inches (about 4400 cubic centimeters) – but with a frequency response of 20Hz to 330Hz, this Class AB amp reproduces deep bass tones without distortion. What’s more, it has full-range preamp outputs to allow amplifier hookups without high-loss Y-adapters or signal splitters. It’s also flexible: You can optimize the GTO3501’s sound based on your subwoofer’s location and your loudspeaker components, and its Dynamic Bass Optimization circuit allows you to tune any enclosure to any vehicle. As the audio engineers say, the GTO3501 provides variable filtering with adjustable Q below 100Hz. Go ahead and tweak. The GTO3501 is ready to obey your will.

Cars are small, and the space inside them is a challenge to audio engineers. But the GTO3501 gives you big, commanding sound. You’ll have 1500 watts of RMS at an impedance of 2 ohms and 1200 at 4 ohms.
The GTO3501’s variable 12dB-per-octave electronic 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.
Dynamic Bass Optimization (DBO) is a JBL® technology that lets you fine-tune your system’s bass output better than conventional bass-equalization circuits can. It includes a frequency control for the high-pass filter and a boost control that provides up to 12dB of bass boost.
With a frequency response of 20Hz to 320Hz, the GTO3501 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.
The GTO3501 includes a remote bass-level control connector for on-the-fly bass-output changes. Plug the optional remote level control into the connector, and you can adjust the level of bass as you drive.

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