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How many watts do the stock speakers have in a 2005 Honda civic ex coupe??? This is my first car and i want to put sub woofers in the trunk but would i need to replace all the speakers in the car???

 
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The subs are Alpine 500-watt Dual 12" if that helps at all

 
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u don't need to replace the speakers to add subs.

 
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Yea, you can add a sub without changing your speakers..

I think the OEM speakers are like 8W or something tiny like that. An iPod's headphone jack puts out enough so you can hear the speakers just fine.

an example of what I mean: https://www.civicforums.com/forums/2...iy-inside.html
lol

 
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does it sounds better if you get all the same name brand speakers and subs as well?

 
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No. Just as long as you're supplying ample power to the speakers and subs..

I'm running 2 alpine amps, alpine front speakers, infinity rear speakers, and a JL audio sub, and it sounds badass