which should i buy tossing up between http://cgi.ebay.com.au/Clarion-15-Subwoofer-Box-Excellent-Condition_W0QQitemZ220029892229QQihZ012QQcategoryZ 130680QQrdZ1QQcmdZViewItem and a Alpine SWR-1521D which one is the better sub?

does it have to be a 15"? i would personally go with the type-r cause these are great subs but you would need a dencent mono block to run it. and your best bet would be to get a 4ohm sub as then it can be wired as a 2ohm sub giving you more power from your amp

both the subs are same price. so i was goin towards alpine sub cause i can pick that up its only half hour from me and i know that it goes allright and doesnt have to be but thats there the only 2 decent subs i have seen for a month without buying a new one the alpine has hardly beeen used still in original box hasnt seen a sub box yet. so im leaning towards the type r unless someone thinks i shouldnt?

are they both on ebay?

ones a mate and other is ebay so i know how me mates has been treated lol.

lol yeah i know what you mean, i would go for the alpine for sure cause those type-r's are dam good subs. what amp are you going to use to run it?

dunno one of my other mates said run the 4x100 watt jaycar amp for 300bux and run me 6's to the amp to.

seeing as that sub is only 500watt rms and you bridge 2 channels it might provide enough power to move the sub but not alot. are you sure that the sub is a 2ohm sub not a 4ohm?

preety sure its a 2ohm sub

~350W RMS from the 4 chan on 2 channels would be alright for now, but that sub would easily handle 750W RMS daily. might be better off getting a Response 800W mono for the sub, and a 2x80 or something for your speakers.

even a 2x150 would be better than the 4 chan :)

300WRMS is fine for a type-r. If you want more db, put it in a more efficient enclosure. Otherwise you will really need to double ( and then some ) to actually get a noticable increase in noise.

i wouldnt say that.. 300->500 is well noticable with an R. 800 even more so. and yea as i said, the 4 chan will do for now, if he likes it like that then stick with it, but personally, if i know there is potential to be had, i will make the most of it, and i know a lot of people are the same, thats all.

i think i might go 4 chanel till later on when i get some splits or sumthin then use the 4 channel for me rears and splits and then get the response 800 for the sub. Thanks for the help fellas. time to go shopping :P

that sounds like the best way to do it

Yeah do it. :D

Remember double the power = about +3db
Ported box = +2-5db ( over sealed and only for the octave above the port tune ). I am merly suggesting that for more output, there are other ways around it over power along. Power will reap other benefits like better control, less distortion ( at the same volume ).

people say two 12" subs equal one 15" and i got two type r 12"s and it pumps real hard, im also runin them on a alpine 1800w amp