two sides of the box story

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=82286
Printed Date: May 31, 2024 at 7:51 PM

Topic: two sides of the box story

Posted By: cutlass013
Subject: two sides of the box story
Date Posted: August 30, 2006 at 10:23 PM

on a woooden or any box really i have wondered what is the best back? a slanted back or flat back... i have heard many a stories about them both and was wondering wich was better? is a slanted box louder than a flat or vice versa or souds better..?...its a question i have a debate on and help would be useful thnx

Replies:

Posted By: cutlass013
Date Posted: August 30, 2006 at 10:25 PM

also lets say on a fiberglass where the subs were mounted at an angle would the subs see the back as slanted or would flat

Posted By: DYohn
Date Posted: August 30, 2006 at 10:29 PM

I matters not, young grasshopper. The quest is for internal volume, not slopes or flats. Seek the perfect space; shape matters less than the single grain of sand on the beach.

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Posted By: Flakman
Date Posted: August 30, 2006 at 10:31 PM

...but, Master, I am still unable to snatch the pebble from your hand. posted_image

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The Flakman
I feel strange. I have deja vu and amnesia at the same time.

John | Manteca, CA

Posted By: cutlass013
Date Posted: August 30, 2006 at 10:36 PM

lol i like that movie....cause i have always heard about you having a slanted back because the sound will not bounce off the walls right will cancel them selves out or sumthing like that

Posted By: stevdart
Date Posted: August 30, 2006 at 10:42 PM

A slanted back may fit against the back of the seat better. Personally, I like to build slants into the enclosure somewhere. It speaks "CUSTOM", this grain of sand...

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Posted By: aznboi3644
Date Posted: August 30, 2006 at 11:19 PM

Aren't the sound waves emminating from the back of the sub too long to cancel each other out inside a box??

Posted By: Flakman
Date Posted: August 30, 2006 at 11:26 PM

I think there have been threads discussing this. May have been Dyohn or haem (or both) as well as some other stuff I have read and can't remember (getting too old). All saying basically that it will not affect the performance or sound quality of the sub. If you look at the manufacturers as well, a lot of the boxes that they recommend are very square. If this were an issue, they would be recommending slanted fronts or backs. The main thing is to make them very very solid since they will be more susceptible to flexing.

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The Flakman
I feel strange. I have deja vu and amnesia at the same time.

John | Manteca, CA

Posted By: haemphyst
Date Posted: August 31, 2006 at 8:48 AM

Like Dyohn says: Volume is the quest.

aznboi3644 wrote:

Aren't the sound waves emminating from the back of the sub too long to cancel each other out inside a box??

Yes, young padawan (to mix movie metaphores posted_image

), you are absolutely correct. In terms of "canceling", it can happen, but only at relatively VERY high frequencies - FAR beyond where you should be running any subwoofer.

A box 12 inches deep CAN exhibit some cancellation effect, at 1130Hz (the fundamental - 180º, 565Hz and 2260Hz - 90º), and this is where a slanted back or proper application of damping can help... At subwoofer frequencies? Fugeddaboudit.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Posted By: Flakman
Date Posted: August 31, 2006 at 12:50 PM

*using a Yoda voice* Mmmm, yes. To heamphyst you listen. posted_image

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The Flakman
I feel strange. I have deja vu and amnesia at the same time.

John | Manteca, CA

Posted By: cutlass013
Date Posted: August 31, 2006 at 9:51 PM

thnx for the input