In the making, 4th order bandpass to house a JBL GT5-12. Removable/Interchangeable... - Fat Sound Customs - Specialist Custom Built Bass Box Subwoofer Enclosures | Facebook
![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/dwd19f2472/GT-BassPro_001-1_3000x3000_300dpi_dvHAMaster.png?sw=537&sfrm=png)
GT-BASSPRO12 | Subwoofer speaker with built-in 150W RMS amplifier with bass port for a surprising bass experience
![NEW JBL SUB BASS TEST DEMO GT5-12D SUBWOOFER GT5-12 VERTIGO VA1-10000D PIONEER DMH-100BT MOTO G7 4K - YouTube NEW JBL SUB BASS TEST DEMO GT5-12D SUBWOOFER GT5-12 VERTIGO VA1-10000D PIONEER DMH-100BT MOTO G7 4K - YouTube](https://i.ytimg.com/vi/D3yT0C3Qrnc/hqdefault.jpg)