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Old 11-08-2010, 04:15 PM   #1
highbird
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Default Mazda 3 stock speaker upgrade?!

I have a 2008 Mazda 3 s Sport and wanted to upgrade the stock speakers. I know nothing about car audio. I went and got a set of Sony XS-R5744 5" x 7" 4-way Coaxial speakers and put them in the rear doors. I'm pretty sure I'm not crazy but it seems like the bass produced from the speakers dropped off considerably and that those high-tech stock paper speakers blew the Sony ones away (bass wise that is). Though the Sony speakers did sound insanely clear compared to the stock ones. But I definitely prefer to have more bass.

Should I upgrade all 4 speakers to those to get the full effect since I still have the stock speakers in the front? Or would the bass really drop off that much? Is there some better setup I can use to maintain or improve the little amount of bump I did have from the stock speakers? And no, getting a sub is not an option, its a family car! Any help would be great!
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Old 11-08-2010, 05:12 PM   #2
cali_axela
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Default Re: Mazda 3 stock speaker upgrade?!

The Sony speakers you got probably expect more power in order to sound their best. When upgrading speakers without also either replacing the headunit or adding an amp, you should stick to speakers with a really high efficiency level. Replacing the fronts with more of the same aftermarket speakers won't help, it might make it sound even worse. Unless you also add an amp inline to power the aftermarket speakers... then they should sound a ton better. This is how my system is setup (stock headunit, into Eclipse amp, into aftermarket Pioneer speakers in stock locations). Sounds great.
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Old 11-08-2010, 05:53 PM   #3
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Default Re: Mazda 3 stock speaker upgrade?!

That's what I figured..that the Sony ones weren't doing their best since they aren't getting enough power. How hard is it to install an amp? how much would they cost?
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Old 11-08-2010, 06:10 PM   #4
cali_axela
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Default Re: Mazda 3 stock speaker upgrade?!

Something like this would be perfect:

http://cgi.ebay.com/KENWOOD-4-CH-600...ht_4122wt_1141

The wiring is all straightforward, but there's a lot of it you'll have to do. You need to run a fused 4-gauge wire from the battery to the amp (either under the passenger seat or in the trunk, whichever location you prefer). Then you have to cut several of the speaker wires behind the headunit, to send each channel's signal to the amp instead of directly to the door speakers... then send the amped signals to the door speakers instead. It can look a little ugly. Your other option would be to convert the high-level signals from the headunit to line-level, and send those RCA outputs to the amp instead of the speaker level inputs, and splice the amped output back into the speaker wires (a little cleaner but more expensive).
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Old 11-08-2010, 06:25 PM   #5
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Default Re: Mazda 3 stock speaker upgrade?!

Thank you very much for the info.

So is there a specific way to setup the speakers? Like should I have a set of one kind in the back and a set of another in the front? I read a lot about how 6.5 speakers sound a lot better than using 5x7s. I'm really not too hardcore about it, I just would like as much bump as I can get without a sub.
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Old 11-08-2010, 06:26 PM   #6
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Default Re: Mazda 3 stock speaker upgrade?!

I personally went with Pioneer Premier 6.75" round component speakers all the way around. I'm not a huge audiophile, but it sounds amazing to me and I have no complaints at all.
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Old 11-08-2010, 07:09 PM   #7
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Default Re: Mazda 3 stock speaker upgrade?!

just get a sub
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Old 11-08-2010, 10:37 PM   #8
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Default Re: Mazda 3 stock speaker upgrade?!

to amp the door speakers you would have to run new speaker wires from the speakers to the amp?
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Old 11-08-2010, 11:05 PM   #9
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Default Re: Mazda 3 stock speaker upgrade?!

[quote author=Carowen link=topic=182033.msg3853508#msg3853508 date=1289273828]
to amp the door speakers you would have to run new speaker wires from the speakers to the amp?
[/quote]

not necessarily. lots of people use the stock wiring.
if you install components with a x-over, you'll need to wire at least that much once inside the doors.
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Old 11-08-2010, 11:24 PM   #10
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Default Re: Mazda 3 stock speaker upgrade?!

yeah me personally im lookign for built in cross overs... less pain in the ass work. could just be me im so tierd from work today, but going with a 4channel amp how would you get the speakers to get powered from the amp? youd have to run wires to the door? im going with an aftermarket HU
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