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tom_simes	posted on 9th May 06 at 19:20
	Right mate, you need to find out the RMS (rated) power of all the speakers, which I'm guessing is around 80W for the door speakers and 150W RMS for the 6x9's. Then you are looking for an amp with four channels and an RMS of the higher reading, providing this isn't a lot bigger. So for the example of the RMS readings I gave, you are looking for an amp with approximately 150 - 160W RMS per channel, i.e. 4x150W RMS. Hope this helps!
greenelephant	posted on 9th May 06 at 19:08
	1 more question. I want 2 get a set of 400W or 500W 6x9's as well as front door 5.25 speakers. Say 4 example I go 4 the 500W 6x9's and the 180W speaker. Does that mean I need a amp around 1500W with 4 channels 2 power all 4 speakers. (Sorry if this question sounds stupid. I'ma bit of a novice about car audio. hence reason im here :lol: ) [Edited on 09-05-2006 by greenelephant]
tom_simes	posted on 9th May 06 at 16:38
	quote: Originally posted by greenelephant Sorry m8. No problems mate, just bear it in mind. quote: just 1 last thing, my head unit is 4 x 45watt so would they b able to support 180W speaker? Yea, it would, but wouldn't sound the best. In my current car, I had 270W max, 95W RMS speakers running off my 4x50W headunit. They ran fine, but distorted quite badly as soon as the volume was turned up relatively loud. After two weeks, I fitted my 290W max, 97W RMS amp to power them, and they now sound much better, and don't distort unless they are almost at max volume!
CoastalCorsa	posted on 9th May 06 at 16:00
	lots of useful info here - http://www.corsasport.co.uk/board/forumdisplay.php?fid=3
CoastalCorsa	posted on 9th May 06 at 15:59
	your head unit will play sound through any speakers but for better sound u could wire them to an amp
greenelephant	posted on 9th May 06 at 15:52
	Sorry m8. just 1 last thing, my head unit is 4 x 45watt so would they b able to support 180W speaker?
tom_simes	posted on 9th May 06 at 15:37
	Its not the battery thats the problem, its the headunit that wont support them, as that can probably only kick out 50W per speaker maximum. Oh, and I told you 2 nights ago mate, try to wait for a reply before topping the thread again, you waited a grand total of 39 minutes. This should also be in ICE and Electrics.
greenelephant	posted on 9th May 06 at 15:33
	n e 1 there?
greenelephant	posted on 9th May 06 at 14:54
	ez every1. I've got a set of 5.25 (13cm) JVC 250Watt coaxial speakers and I was wondering if my car battery alone would b able to support them. (I've got a feeling they're 2 powerful and would drain the battery) so im thinking I may need 2 wire them 2 am amp. What do u lot think? :wave::thumbs: [Edited on 09-05-2006 by greenelephant]