Back in 1991 after a few years with my first pair of subs ( CV 12 in. ), i ran across these Crankenstein subs at a local (philadelphia) car audio distributor and decided it was time for a new pair. Im not sure why i even bought them other than i thought they were cool because nobody i knew had them. It turned out that they were the best sounding pair of subs i had heard. I ended up having a custom box made for them at a local stereo shop to fit behind the seat of my 1987 S-10 reg. cab pickup. Since that time i have had more trucks than i care to remember, but have always kept that same box with the same pair of Crankenstein subs(HV-124C). Earlier this year after i noticed that my 17 year old box that was made from particle board was starting to crumble i decided to have a new box made. I also decided to finally replace the 2 Crankenstein subs, so i did a google search and found a new Dr. Crankenstein web page. Long story short, i have a custom box built and buy 2 new subs (HV-124DVC). The new box is .9 cu.ft. per side sealed. I have the subs wired in series with my 2 channel amp bridged to 1 channel 600w mono into 4ohms. This new setup has performed better than i ever expected, the new subs hit harder, sound better, and are so tight, i would recomend these subs to anyone. Back in the day, to me, low end meant: Pyle, Pyramid, MTX, ect. I did not then or do i now think these Crankenstein subs were in the same catagory as the low end class of car audio equipment. They are well built, solid subs that i would have no problem buying again. I am not now nor have i ever been a employee of any speaker company. Im just a blue collar guy looking to have a kick-ass car stereo to listen too while driving to work. And yes, being made in the U.S.A. is still important to me. Im no expert, but it doesnt take one to see a high quality, well built speaker that just happens to rock.