TSG Dual BandPass 1218 DUAL 18" Woofer 106 DB at 1 watt LOW SHIPPING!! – SpeakersAndAmps.com
Pyramid Bnps122 12 Inch 1200 Watt Dual Audio Subwoofer With Neon Lighting And Bandpass Enclosure Box And Pyramid Pb715x 2-channel Car Audio Amplifier : Target
Dual XNBP12D Bandpass enclosure with two 12" woofers at Crutchfield
Hifonics Dual Bandpass MXZ12DUAL Power 2000/4000 Watt Subwoofer Box HEAVY DUTY | eBay