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Help with 3-way setup in a roadster
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<blockquote data-quote="hispls" data-source="post: 8653061" data-attributes="member: 614752"><p>Really a good 3 way system would use 6.5" woofer, 3" or 4" midrange, and tweeter. I use 6.5" midrange just because that's what the kicks fit, I've used 4" mid and also 4X8" planar mid before and been very happy.</p><p></p><p>You definitely won't be disappointed with that Pioneer head unit. They're top quality and very powerful as far as processing power.</p><p></p><p>As to putting midbass behind you, not so hot. The big issue is what our ears are designed for. 80hz and down is very non directional and not really getting into things that will want to be localized in front of you (the human voice in particular). You can't make something behind you sound like it's coming from in front of you period and the higher the frequency the more directional it will be.</p><p></p><p>Consider also the distance between each speaker. TO find the wavelength divide the speed of sound by the frequency..... For example, at 80hz you divide 1125 by 80 for 14 foot wavelength. The half wave is really where you get into trouble, so pretty much if your subwoofer is &lt;7 feet from the mids you're not in big trouble as far as cancellation at crossover points. Obviously closer is still better, but you get the point. Now try the same thing at 400hz which may be more in the neighborhood where your midbass is crossing into the midrange and you have 2.8 feet. This tells us that ideally you'll want your midbass and midrange less than 16" apart to avoid possible cancellation. Tweeters should be within an inch or two of the midrange for best results and that's why you'll notice tweeter is often put further from the listener than the mid (in kicks or A-pillar pods) so that the voice coils (magnets) are equal distant between all speakers and your ears.</p><p></p><p>Now the midbass can be a bit away from the mid and tweet and work out fine but these are things that you'll have to fight by trying to run things out of phase or otherwise brute force later, but possibly not with as good results as just keeping everything in one place coming out the gate.</p><p></p><p>IMO if the midbass behind you is the only option I'd rather go with a stout set 2 way components that can live up front. You might could get away with 5 1/4" up front with what you're doing I suspect you could run the sub up to 100 or 120hz without too much issue pulling the sound behind you.</p><p></p><p>By Harmon, I meant Harmon International Group, JBL/Crown/Infinity products. Stock sound system is stock sound system. They're "good" for what they are, but it's likely they're built around some severe limitations imposed by the auto manufacturers. </p></blockquote><p></p>
[QUOTE="hispls, post: 8653061, member: 614752"] Really a good 3 way system would use 6.5" woofer, 3" or 4" midrange, and tweeter. I use 6.5" midrange just because that's what the kicks fit, I've used 4" mid and also 4X8" planar mid before and been very happy. You definitely won't be disappointed with that Pioneer head unit. They're top quality and very powerful as far as processing power. As to putting midbass behind you, not so hot. The big issue is what our ears are designed for. 80hz and down is very non directional and not really getting into things that will want to be localized in front of you (the human voice in particular). You can't make something behind you sound like it's coming from in front of you period and the higher the frequency the more directional it will be. Consider also the distance between each speaker. TO find the wavelength divide the speed of sound by the frequency..... For example, at 80hz you divide 1125 by 80 for 14 foot wavelength. The half wave is really where you get into trouble, so pretty much if your subwoofer is <7 feet from the mids you're not in big trouble as far as cancellation at crossover points. Obviously closer is still better, but you get the point. Now try the same thing at 400hz which may be more in the neighborhood where your midbass is crossing into the midrange and you have 2.8 feet. This tells us that ideally you'll want your midbass and midrange less than 16" apart to avoid possible cancellation. Tweeters should be within an inch or two of the midrange for best results and that's why you'll notice tweeter is often put further from the listener than the mid (in kicks or A-pillar pods) so that the voice coils (magnets) are equal distant between all speakers and your ears. Now the midbass can be a bit away from the mid and tweet and work out fine but these are things that you'll have to fight by trying to run things out of phase or otherwise brute force later, but possibly not with as good results as just keeping everything in one place coming out the gate. IMO if the midbass behind you is the only option I'd rather go with a stout set 2 way components that can live up front. You might could get away with 5 1/4" up front with what you're doing I suspect you could run the sub up to 100 or 120hz without too much issue pulling the sound behind you. By Harmon, I meant Harmon International Group, JBL/Crown/Infinity products. Stock sound system is stock sound system. They're "good" for what they are, but it's likely they're built around some severe limitations imposed by the auto manufacturers. [/QUOTE]
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Help with 3-way setup in a roadster
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