THE FOLLOWING ARE THE FINALIZED PARAMETERS FOR THE 12 INCH AND 15 INCH DSS ETHOS TRANSDUCERS (NOTE: physical dimension will be added soon) 12 INCH DSS ETHOS re 3 ohms Le 2.94 mH Qms 5.91 Qes .54 Qts .49 Fs 28.24 hz Mms 326.15 grams Cms .1 mm/N BL 21.43 T/M Vas 33.1 liters spl 84.99 1w/1m sd 490.87 cm^2 xmax 32.5mm per 70% Bl rating recommended power 1,800 watts 15 INCH DSS ETHOS re 3 ohms Le 2.94 mH Qms 10.6 Qes .69 Qts .64 Fs 25.78 hz Mms 362.9 grams Cms .1 mm/N BL 21.43 T/M Vas 95.93 liters spl 88.22 1w/1m sd 804.25 cm^2 xmax 32.5mm per 70% Bl rating recommended power 1,800 watts The design goals of these drivers were to create around 3 db of ripple and a f3 of 28 hertz in a recommended ported enclosure of 3 cubic feet for the 15 and 1.5 cubic feet for the 12 tuned to 32 hertz. Below is a screen print of the 12 and 15 in their respective enclosures.