If I were you, I would ditch the rear speakers and go with some nice components up front, (JL, Infinity, MB Quarts) get a decent 2 channel amp. I have an integra and dont have rears because I sold them after having them a week and then deciding they didnt do anything for the sound. Of course I have a sub in the back so that may make a difference. But all in all I would definately ditch the stock speakers as they suck.
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Catapultam habeo. Nisi pecuniam omnem mihi dabis, ad caput tuum saxum immane mittam.