Hi l am going to buy this subwoofer :
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&Item=150284915448&Category=18805&_trksid=p3907.m29

its in the box, would it be good for my car ?
l have W2300 amplifier also, that l wanna connect it to the woofer.

Just to let u know, this subwoofer is 1000w RMS & 2000w peak. So if you're running with this amp at 4 ohms, then make sure it is not too much over 1400w or under 800w because that will in turn be bad for the amp, & for sure the subwoofer. If the amp runs at 4 ohms around there, then u should be fine. Maybe if u listen to the sub in ur car, then stand outside & see if u need dynamat or a sound dampener in the trunk. other than that this sub will be fine. I've seen 4 of these hooked up by hifonics amps in a monte carlo so u will be fine for sure.

if ur amp is 2300watt rms ur going to have problems running it any lower the 1000watts. even though that sub is strong & it can handle more than 1000watts u do not want to run it continuously that loud or it can sooner or later ruin the sub. l think ur best option is to buy a new amp.

the most that sub can be run at over powered is 1400watts I've tried it & it played at high volume for over 2 hours without any distortion or mechanical difficulties but l had a 07 model & the technology on the newer sub is better than the model ur getting also l bet the sub has been used before so u the coils & sub woofer system itself for that matter is not going to take on the same beating as a new model. but im guessing the minimum that amp is going to run at is around 1600 or 1200 at 4 ohms. l do not recommend trying to run it like that because u probably going to be playing it loud longer than 5 hours or the lifetime & it wont ever last that long.