![GT-BASSPRO12 | Subwoofer speaker with built-in 150W RMS amplifier with bass port for a surprising bass experience GT-BASSPRO12 | Subwoofer speaker with built-in 150W RMS amplifier with bass port for a surprising bass experience](https://kh.jbl.com/dw/image/v2/AAUJ_PRD/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwe17db6e2/GT-BassPro_003-1_dvHAMaster.png?sw=537&sfrm=png)
GT-BASSPRO12 | Subwoofer speaker with built-in 150W RMS amplifier with bass port for a surprising bass experience
![Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics](https://m.media-amazon.com/images/I/413bH0I6YvL._AC_.jpg)
Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
![Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics](https://m.media-amazon.com/images/I/71Ggckahh7L._CR204,0,1224,1224_UX256.jpg)
Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
![Ming on Twitter: "JBL GT-Basspro 12 12" Bass Reflex Subwoofer Box - Subwoofer System (with amplifier) Power : 450 watt, peak 1350 watt https://t.co/g7uxrwIUn5" / Twitter Ming on Twitter: "JBL GT-Basspro 12 12" Bass Reflex Subwoofer Box - Subwoofer System (with amplifier) Power : 450 watt, peak 1350 watt https://t.co/g7uxrwIUn5" / Twitter](https://pbs.twimg.com/media/CaHTeFQUMAAoI3c.jpg)
Ming on Twitter: "JBL GT-Basspro 12 12" Bass Reflex Subwoofer Box - Subwoofer System (with amplifier) Power : 450 watt, peak 1350 watt https://t.co/g7uxrwIUn5" / Twitter
![I need help troubleshooting a problem with a JBL GT-basspro12, works fine when car is running but when I turn the car off it doesn't power off : r/subwoofer I need help troubleshooting a problem with a JBL GT-basspro12, works fine when car is running but when I turn the car off it doesn't power off : r/subwoofer](https://external-preview.redd.it/BYS2ZHAvsqbEOts02gHcmiqcflVWGyYwZ6ajzljFTT8.png?format=pjpg&auto=webp&s=7bc344723eefe149542ddae0bd0c00829026bf39)
I need help troubleshooting a problem with a JBL GT-basspro12, works fine when car is running but when I turn the car off it doesn't power off : r/subwoofer
![JBL GT-BassPro 12 Subwoofer Amp Combo - JK-Forum.com - The top destination for Jeep JK and JL Wrangler news, rumors, and discussion JBL GT-BassPro 12 Subwoofer Amp Combo - JK-Forum.com - The top destination for Jeep JK and JL Wrangler news, rumors, and discussion](https://cimg0.ibsrv.net/gimg/www.jk-forum.com-vbulletin/2000x1504/2ceaecda_98b1_454a_aa4d_7971a0982fcc_2c6e3e86ddacf19d3ba24d752066fd192d736e28.jpeg)
JBL GT-BassPro 12 Subwoofer Amp Combo - JK-Forum.com - The top destination for Jeep JK and JL Wrangler news, rumors, and discussion
![Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics](https://m.media-amazon.com/images/I/91MuyrJauXL.jpg)
Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
![JBL GT Bass Pro 12 vs. Rockford Fosgate P300 12 - Battle of Powered Subwoofers - Decibel Results!! - YouTube JBL GT Bass Pro 12 vs. Rockford Fosgate P300 12 - Battle of Powered Subwoofers - Decibel Results!! - YouTube](https://i.ytimg.com/vi/-lUsmGzayIQ/maxresdefault.jpg)