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Shawn Davis
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1,662 Posts
Discussion Starter #1
I took apart the door panel off my mkiv this weekend and took a look at the speaker setup so I could decide what to do. I've got a number of questions you guys may be able to help me with. I'm not a huge audiophile, but I do appreciate some good sound, so these questions may be on the basic side:

1) I was impressed that Toyota used a enclosed compartment with a port for the front mid-range speaker. Is the sole purpose of using this device to reduce distortion? Is distortion really much of a problem when you've got a single speaker in the door? How much is lost by removing this device and replacing it with an adaptor plate?

2) I've read that people have had trouble finding a good aftermarket speaker to replace the stock fronts due to the small size. The enclosure has a fujitsu-ten stamp on it. Any chance the 4.5" components by eclipse would fit? I can tell there's three mounting holes on them but I don't have the mounting dimensions. I suppose the wouldn't since I measure the hole at 4.25" and they're supposed to by 4.5" speakers. Has someone tried this or do you have the true dimensions of these speakers?

3) Would you rather have smaller speaker in the enclosure or a larger speaker in an open adaptor (assuming they're similar quality other than the size).

Thanks for any input...
 

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road hazard
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452 Posts
i'll give it a shot...

1) I was impressed that Toyota used a enclosed compartment with a port for the front mid-range speaker. Is the sole purpose of using this device to reduce distortion? Is distortion really much of a problem when you've got a single speaker in the door? How much is lost by removing this device and replacing it with an adaptor plate?

i would imagine the enclosure to help reduce distortion as well. but i think distortion is not an issue to worry too much about in our doors. thomas kenyon has fabricated some custom speaker brackets that replaces the grey enclosure and can hold 6.5in speakers.

2) I've read that people have had trouble finding a good aftermarket speaker to replace the stock fronts due to the small size. The enclosure has a fujitsu-ten stamp on it. Any chance the 4.5" components by eclipse would fit? I can tell there's three mounting holes on them but I don't have the mounting dimensions. I suppose the wouldn't since I measure the hole at 4.25" and they're supposed to by 4.5" speakers. Has someone tried this or do you have the true dimensions of these speakers?

i stuck with stock speaker sizes because i didn't want to spend too much time in modifying brackets. i went with a set of boston pros components sized 4.5in. they fit perfectly, just with some really light modifications. they use the stock grey speaker bracket also. any speaker you buy will almost never fit a vehicle's stock speaker location. at least some kind of modification or drilling of new holes is needed.

3) Would you rather have smaller speaker in the enclosure or a larger speaker in an open adaptor (assuming they're similar quality other than the size).

sorry, i can't put any input on this because i haven't heard another supra with anything larger than stock in the fronts. but i would assume that the larger diameter speakers would hit the mids a lot harder. i have some tweeters located right next to the door speakers to help the imaging with the small speaker size.
 
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