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
Hot Sale Car Subwoofer Speaker 12 Inch 1200W Big Power Car Bass Speaker Gt5-S12 - China Car Speaker, Car Subwoofer Speaker | Made-in-China.com