I am finally getting my new workshop set up and completed! Just need to get the metal lathe and mill in and i wil be set!!!!!!! But this last week, I have been getting the audio sytem set up. What a fun time! i built 2 enclosures for a set of orion xtr 6.5 inchers and a pair of Vifa 1 inch soft domes. 18 dB at 3kHz on the tweets and a 6 dB roll off at 2.5 kHz for the 6 inchers. they are actively crossed over at 100 Hz using an old soundstream SX 2 . I lisrened to the sattelites first with some good quality source music and dialed in the right sound with an old audio control 10 band per channel home EQ. (shop acoustics SUCK!) once they had a very nice and smooth sound that really was impressive being run off an old 60 watt per channel onkyo reciever, i moved onto the sub. Years ago i built an enclosure. it was an dual reflex bandpass for one 12. I remeberd that the gain on this thing was in the area of 7 or 8 dB from about 40-95 Hz. wih a smooth roll off at the lower end. i looked around in my papers for the info on the damn thing and finaly found it (the box design) Well, I built another one. using an old scholl xtr 12 dvc. The end result is KILLER! the enclosure was originally meant for a soundstream ss12 if I remember right, but the orion 12 performs flawlessly. Not sure of the displacement limited power handling on it, but it is handling the 800 watts from the old sony ES amp without a problem. Played some depche mode, warrant, dream theater , clint black,Time warp (which shook the HELL out of the tools in the toll box!) and some various other personal referance music. The overall sound was rather impressive. Very nice upper frequency response with no serious peaks or dips, and the sub bass rolls in like it should, tight fast and accurate with low end extension that would put 1000 dollar home sub to shame. still need to do some fine tuning and some sattelite placement corrections for smoother respose, but hell, when your under a truck or running a peice of equipment, i guess it aint that critacal! this just goes to show what can be done with a combination of 12volt audio and home audio, all of it it least 10 years old (some of it over 25 years old) !!!!!!!