Lost this first time around so here we go again. ReTrO & Taz Productions welcome you to another DIY audio masterpiece. RTP-15 This subwoofer utilises an Adire Audio Temepst 15" bass driver fitted inside the Adire reference small enclosure (65L). The enclosure has been made by Taz, using the latest MDF bonding techniques (involving lots of high voltages, yeah!) It will be using an unknown amplifer at present, but it will most likely be either a BKElec DT300 plate amp or a pair of BKElec 200w amp modules. In the short term it will use the 110 amp module from the Mk.1 RTP-10 project. It has a 12 band parametric eq offboard, in the form of a Behringer Feedback Destroyer Pro DSP 1124P , to help with the in-room response. The enclosure will be finished in black ash fablon, as supplied and fitted by the man Taz himself. I will be making a stretchy sock grill to go over the front. Here are some pictures so far.