Speaker info. Easier??

3Zoom3

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2004 Mazda3 5-door
I'm no math pro, but saw in someone's post that the stock speakers are 5x7's. Also saw the post on replacing the stockers with 6.5s. I wondered how much area difference there might be, so bounced around the 'net for awhile and found some formulas. Crutchfield denotes most of its 5x7 speakers as "5x7/ 6x8", so I figured the surface area of the 6.5s, 5x7's, and 6x8's. This doesn't take the "slope" of the cones into effect, but will give a general idea... The surface area of a true 6.5 speaker is 33.16 square inches. The area of a 5x7 is about 27.48, and for a 6x8 its 37.68. I guess my thinking is that installing a 6x8 will be much easier than fabricating for a 6.5, and should be just as good. Thats all.
Jeff, Ohio
 
It's not really a matter of cone area. There are many more choices in 6.5" than 6x8. And if you want a nice set of speakers, then you almost have no choices in the various oval sizes.
 
mounting

wouldn't the mounting holes match up on both 6.5 and the 5X7's or have i've been mistaken? :\
 
Its not JUST about service area guys. Surface area helps with lower frequencies, but those are the frequencies you need a subwoofer for, not a 5x7, 6x8, 6.5 or etc.

Buy a good quality 6.5" speaker and it will sound infinitly better then even the best 5x7's. I, personally, chose Boston Acoustics ProSeries 6.5 over the Boston FS80, MQ Quart RCE 268 and JL XR570.
 
nixrr has it right, if u were comparing subwoofers, the surface area would have some validity. but this is midrange area. and basically manufacturers make the 5x7 and 6x8 for people that just want something a little better then stock without any hassle of installation, a good 6.5 will sound better the majority of times because companies know that these people are a little more serious about their sound.
 

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