Placement of rear ported speakers - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 7 Old 08-25-2019, 01:46 AM - Thread Starter
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Placement of rear ported speakers

How many inches does a rear ported speaker need to be from the wall behind it ? I've been reading conflicting things. I'm considering the Sony Core SS-CS5 bookshelf speaker. It would sit on a 1X12 shelf, so it would probably have 3-4 inches between the rear of speaker and the wall.
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post #2 of 7 Old 08-25-2019, 07:58 AM
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Originally Posted by Jim McC View Post
How many inches does a rear ported speaker need to be from the wall behind it ? I've been reading conflicting things. I'm considering the Sony Core SS-CS5 bookshelf speaker. It would sit on a 1X12 shelf, so it would probably have 3-4 inches between the rear of speaker and the wall.

Check the user info for the speaker - Sony might provide a recommendation on this. It does depend somewhat on the speaker design, but 3-4 inches in my opinion is pretty close. But if you don't have a choice, you don't have a choice. You could always look for a front-ported design.

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post #3 of 7 Old 08-25-2019, 09:12 AM
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you may be able to place a "bung": a foam plug, into the port. many rear ported speakers come with this option... you may be able to make one as well.

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post #4 of 7 Old 08-25-2019, 09:39 AM - Thread Starter
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Originally Posted by smithsabom View Post
you may be able to place a "bung": a foam plug, into the port. many rear ported speakers come with this option... you may be able to make one as well.
Thanks. Would this affect this sound ?
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post #5 of 7 Old 08-25-2019, 02:53 PM
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Originally Posted by Jim McC View Post
Thanks. Would this affect this sound ?
I think it would sound like a bit of a decrease in bass output, afaik (less "boomy"), but it might also result in tighter-sounding bass?

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post #6 of 7 Old 08-25-2019, 04:54 PM
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Originally Posted by Ryan Statz View Post
I think it would sound like a bit of a decrease in bass output, afaik (less "boomy"), but it might also result in tighter-sounding bass?
I may make the output more sealed(speaker)-like. due to its commonality, it appears to be a reasonable trade-off.

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post #7 of 7 Old 08-25-2019, 09:11 PM
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Quote:
Originally Posted by Ryan Statz View Post
I think it would sound like a bit of a decrease in bass output, afaik (less "boomy"), but it might also result in tighter-sounding bass?
Yes, better time response. Now, it might have more or less distortion at various frequencies, depending on the power level. But if used with a sub, I'd sure be trying this.

Anyway, I'd place a lot more importance on getting the best sound overall up into midbass, midrange, treble. The "blocking" of the port by a rear wall should not be a huge factor if crossed over to a sub. I'd also put some kind of a little pointed cone on the wall behind as a diffusor, kinda like Polk's Power Port.
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