DIY floor speakers with car audio drivers
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hello everyone im new to diy and i need your help, im looking to bulid speakers using car audio drivers.
i want to use 4 6.5 inch 4 way drivers for each speaker (for example: https://pioneer-mea.com/en/products/ts-a1677s/ ) reason is that they are affordable for me, drivers are 4 ohm and matching my reciever impedence and wattage.
my question is do i need a crossover in the speaker? if yes please explain why, if not so how do i wire it.
and what is your overall opinion on this idea?
thanks in advance!
😀
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Always a fun way to get into the hobby.
Auto speakers, generally, run the woofer full range, with the mids and tweeters successively using “bass blocker/blocking” caps, just to keep lower frequencies out of those drivers. Nothing special, crossover-wise. And it works pretty well, especially in an automotive setting.
4 speakers per unit? So you’ll be buying a minimum of 8 speakers (4 pairs)? How are you thinking of arranging them? I envision some comb filtering if too many drivers are used, but in a PA situation, that might not be an issue.
Can you find.the basic Thiele/Small parameters? It’d be hard to help design a box without them, other than knowing that “car” speakers like that are generally either open or infinite baffle types. If someone near you has a DATS that would test them for you, that’d help immensely.
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Even in a PA use case comb filtering between the mid range drivers will be an issue
Many PA cabinets, especially line array cabinets, run multiple tweeters and 2x 8″-12″ woofers but most still only use 1 mid range driver unless they have a custom wave guide to combine multiple mid drivers spaced very precisely and that requires complex maths and many R&D revisions
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If I were to do something with these drivers, it’d probably be something like a slightly smaller version of the Zu Dirty Weekend where it is based on one driver up top in a nice floorstander box. Probably between 1.5 – 2 CuFt. ( ~42 -56 L) approximating the volume inside a car door.
If you really want to use 4 per box, I would imagine that you’d want to try to keep the tweeters as close as possible to each other. Maybe cluster them in a N, S, E, W configuration where the tweeter is lined up as close as possible to the center of that cross, in order to mitigate comb filtering as much as possible. I can’t say how well it’ll work, so you’ll have to do your experiments to find out for sure.
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