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JBL GT Bass Pro 12 vs. Rockford Fosgate P300 12 - Battle of Powered Subwoofers - Decibel Results!! - YouTube
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Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
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GT-BASSPRO12 | Subwoofer speaker with built-in 150W RMS amplifier with bass port for a surprising bass experience
![JBL GT-12BP 1200W 12" GT Series 4-Ohm Loaded Ported Bandpass Subwoofer Enclosure with Red LED Illumination JBL GT-12BP 1200W 12" GT Series 4-Ohm Loaded Ported Bandpass Subwoofer Enclosure with Red LED Illumination](https://images.sonicelectronix.com/images/2803717/big/gt12bp.jpg)