stereo system advice from Experts

So it sounds like you want something with more output and hopefully with good sound quality also.  That right?  Since you didn't mention it, I assume box size & architecture aren't very important.  Given that, I'd say go with the 15" in a ported enclosure.

I've always found a pair of 12's being the *best* combination between volume and precision. Hmm.. whoa your amp looks absolutely awesome. Do actually have bi-amped CDT HD series speakers running off that thing? I'm *really* jealous. It looks like your subwoofer channel is good for about 300 - 400watts at 1-2 ohms? I'm not sure if I'd mate a VanGogh to that... you'd be at barely half RMS. I think the original recommendation of the XStream sub was probably the best pick, at least from the Soundstream line. Not sure what the deal with the embossed Tarantula though. I really can't deal with that at all. Here's what I think.. if whoever did your system the first time was smart enough to pick an amp that cool, then mate it CDT HD stuff in that manner, clearly he knows what he's doing. Find out *why* he wanted you to swap your deck b/c I really can't explain that.. but just looking at your system componets I bet your high end sounds about as good as it can get. Is this guy a sales guy at a store or just a friend of yours? Here's the bottom line as I see it.. with a top end like yours I'd mate your amp to the sweetest sounding subwoofer I could get.. a long excursion 12 maybe. In a hatchback you certainly won't have any output problems. Why don't you post back with a budget and we'll kick it around a bit. Honestly though.. with the superficial exception of that stupid spider, that original soundstream sub looks great... err.. looks like it would sound great. Inverted. Definately invert that sub. "I'm finished!" - Daniel Plainview

A 15" ported box with a top end like his? Please, please don't do that to your stereo. Please."I'm finished!" - Daniel Plainview

actually the soundstream amps and the CDT speakers is from me myself. the subs is from my dad's old car. the hu is reconmended by my friend.... i got all the stuff and pass it to the guy to install it..... only recently when i thinking of changing the subs tat's why i ask that guy his suggestion.... after hearing tat.... i can't be sure... tat's why i posted here for advice from the real experts... hee hee.... my budget.... hum..... i'm willing to go on diet for it.... :)

boulderguy wrote: It may not be what Sedate wants your system to be, but I think it fits what you want it to be.

hehe okay point taken. Still, I betcha 1 Soundstream 12 will be louder and cleaner than 2 Sony*anything* subs. Seriously. That stuff is really crappy gear. Anyway... like I said above, best combination that fits into the realm of realistic installs is usually 2x12's.. they'd be louder than a 15, if not quite as deep. Anyway, with 200watts/sub available to ya, you won't starve. Maybe $300 - 400 at most.. 'course if you are in Singapore, I really have no idea what you could get at what price.. but.. stateside.. I'd recommend something along the lines of a pair of any of these: http://www.jlaudio.com/press/W1v205.html http://www.cardomain.com/item/IDSID12V3D2 http://www.cardomain.com/item/INFREF1240W Honestly, there are about a zillion different subs you can get that fall into the area you are looking at. Try finding stuff you like and then bounce it off us eh?"I'm finished!" - Daniel Plainview

what the hell is a  van gogh 

i'm looking at these baby... http://www.cardomain.com/item/IDSID12V3D2 sorry for my ignorance but may i ask what does it means when it says this sub allows free air usage?????

Means it doesn't need a box.  You could mount it on the rear deck w/o an enclosure.