Subwoofer Enclosure Port ModuleTXTRB10BBAttaching the Port:Unscrew the eight #2 Philips speaker mounting screws andremove the subwoofer from the TXTRB10 subwoofer enclosure.Unscrew the side panel from the TXTRB10 subwoofer enclosureusing 4mm and 5mm Allen wrenches. Push out the side panelfrom inside of enclosure.Align and attach the foam gasket to TXTRB10BB (Port).Align the TXTRB10BB (Port) next to TXTRB10 (Enclosure).Place a rubber washer on the four inner bolts. From insidethe enclosure, align the four bolts through the enclosureinto the threaded holes on the port. Tighten using a 10mmsocket.Install two additional bolts on the bottom side of theenclosure stand.Reconnect the speaker wire from the TXTRB10 enclosureto the subwoofer the same way as before it was removed.Reinstall the subwoofer using a #2 Philips screwdriver.®Foam GasketAdhesive Side