tc sound passive radiator, in a truck?

don' t know much aboutpassive radiator. Saw this link posted in a different thread:

http://www.diysubwoofers.org/prd/

Very sort explanation then it starts throwing around formulas. I need it dumbed down even further. My experience is with sealed boxes. I really have very little experience with ported boxs (I am concerned with SQ, not with SPL). This website seems to essentially compare PR to ported boxes, then throws formulas in your face. Doesn't help me in the slightest. My main concern here is SQ, and how PR's are for that. Also interested in how they compare to sealed boxes for SQ.

Check this link on the TC sounds website:

http://www.audiopulse.com/products/passive-radiators/

I know that TC sounds make real good SQ subs, I have an eclipse 8122 DVC 12" sub that is made by TC sounds. I am using it to replace my 2 10" kicker solobarics (s10d, old school round, SQ subs; not the crappy square kind). Being the novice I am in this area, I assume that TC sound wouldn't be getting into the PR market unless there was something there to be said about SQ (please correct me if I'm wrong).

Specifically, this is for a possible install in a 1993 S-10 regular cab truck. I won't be cutting any metal and loosing stucture and comfort for the sake of better sound. The idea of saving space in the building of the box (probably integrated into the center console) is appealing (or am I off on that)?

This being a truck install, I have a concern about sb sound quality. I have only dealt with subs in the trunk. With a trunk closed, the subs seem to sound a lot better then when the trunk is open. I assume this has something to do with the fact that the sub is using the trunk as a resonating chamber. When the trunk is open (on some of the installs I have done; admittedly using lesser subs) the sub looses SQ.  Is there a loss in SQ when the sub is in the same compartment as the passengers; in this case, in the truck cab? if so, is there a work around?

One last issue; 10" vs. 12" subs, Which is better for SQ, and range? Would a 10" not be as able to reach and/or reproduce lower frequencies as a 12"? Are there any other benifits/drawbacks with one size vs. the other?

Thanks in advance for any input. It is appriciated.

I'm very impressed with my 10" Boston G5 with GTR (PR) -'tuned' to 25Hz. I, too, switched over from Kickers. I'll never use Kicker subs again -for my own vehicle -maybe my G/F's. Still a very big maybe. -She probably couldn't tell the difference.

C'mon now...

Treat your girlfriend like you love her.      

You're right, I can find better subs for the money. But hey, she's satisfied with her JVC HU (24bit BurrBrown D/A convertor is about all it's got going for it...), Lanzar 6.5's (rear) and factory 6.5's and Jensen tweeters (front). Don't worry, I put it all in her car before I realized the importance of spending money on the stuff.

Maybe I could spend some more time on her system. Nah... I've gotta get mine right first...lol

I'm considering playing around with some PR's myself. I did not read this entire thread, so please excuse if what I am about to type has been mentioned. PR's act as ports. Basically, design a sealed enclosure and put the PR's in. However, from my understanding, you need double the cone area. So if it is for a single 10" sub, you would either need 2 10" PR's or 1 12" PR.

As for SQ of a 10 or 12, it really doesnt matter what size you go with. My RL-p 18, has immaculate SQ and is just as accurate as an 8" or 10" sub. The SQ of your system all depends on how you tune your system.