Box Tuning 30 Hz Port Diameter 7 in. Port Length 20 in. * Box is given as internal air volume including port and driver displacement. PT15D2 / PT15D4 15.6 in. / 39.6 cm 10.12 in. / 25.70 cm 13.8 in. / 35 cm PT15D2 / PT15D4 15”...
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NTRODUCTION Congratulations on your purchase of a DB Drive state-of-the-art subwoofer compo- nent. Your selection of a DB Drive car audio product indicates a true appreciation of fine musical reproduction. Whether adding to an existing system or including a DB Drive subwoofer in a new system, you are certain to notice immediate performance benefits.