Hey guys can anyone give me a site or place to go to help me understand what all the ###s and specs mean for subs in terms I can understand. Things like Xmas, Vas, QTS, and so on,I would like to learn more but dont really understand what all the abreveations (sp) mean. Also when I was up at show in Penticton I heard people talking about tunning to a certian frequency,how would you know what freq you want to....... as you can see I need alot of help in trying to understand this so any info would be great. Thanks

http://www.the12volt.com/caraudio/theile.asp

[img]graemlins/thumb.gif[/img]

sorry to hijack.. while we're on the topic... for the most part whatever your Fs is, is what tuning frequency would be the most efficient for the sub/enclosure?

definately a good read, i just have to make heads or tails out of it. one of these days it just might make sense! [img]smile.gif[/img]

excellent question, Sr SQ.. i was kind of wondering about what they all mean myself!

Thanks WD21 thats the type of thing I was looking for, now I just need to understand what it all really means :confused: (slow learner)

crazykev81
Yeah thats the kind of stuff I'm trying to figure, like why tune to freq a instead of freq b and how those numbers come about? well theres lots to read so I better get at it.

yeas same here!

Ok I dont seem to see what I'm looking for in the link to the Theile-Small Parameters
What set of letters denotes the subs volume it takes from the enclosure? In other words Im trying to figure out how much bigger I need to build the enclosure to make up for the loss in volume the sub takes up? Hope this makes sense [img]graemlins/dunno.gif[/img]

Sr SQ, you would be looking for the "subwoofer displacement".