mnguyen

i've posted this in other forums too, im just trying to get as much input as possible. this is for tc3000 12"dvc. several experienced people have recommended around 2 cu, but i've done some more reading and it seems that they recommended for SPL purposes, you want to use a large enclosure and port. But im not going all out SPL, i just want a REALLY LOUD daily setup, so im just going to experiment and try something in between. I've decided to go ahead and try 2.75 @ 33. i chose to use 15.5 sq in per cu ft since 15 and 16 seems to be the commonly recommended multiplier; the port area comes out to about 42.62 sq in. my max height is 13.5 so my width is about 3.157. i used the calculator on 12volt to calculate my port length which is about 32.964, winISD also calculated a similar length so i think its good. last i tried to calculate the port velocity. im having trouble here, on winISD, i checked the graph and it seems to be .753 m/s @ 34/35hz, but when i tried using the calculator on CarStereo, it came out to be about .08 [8%] of mach [344.8] which equals about 27.584 m/s. im not sure which result to rely on. can anyone show me a reliable formula and calculator? also, in winISD i've entered all t/s parameters the suggested way but i cant get it to plot the graph for my maximum SPL or maximum power.. any ideas?

I bought a 2 12" TC-3000 last year, the DVC version with lower BL. I went to a shop and got it installed, but now I want to try and redesign my system, by building a new box and possibly purchasing some new amps, but I don't know what the T/S parameters are[DVC's should be different than QVC], the wiring diagrams[ohm load] or power ratings. I've checked the old TC website, but they only provide information for the QVC version. I've also tried calling them, no luck.. Are there any tools I could use to figure this out or is there anyone that might have all this information.