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<blockquote data-quote="Umbra" data-source="post: 8421332" data-attributes="member: 658055">The other day I was buying a AQ 15&quot; sub on Craigslist and the guy also had this homemade box:<img src="http://images.craigslist.org/01616_112kdWZj7di_600x450.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />I&#039;m not sure if he ever ran the AQ or any other sub in it. He told me it originally housed a 15&quot; woofer and a horn tweeter and it was later modified for sub use. I could tell it was way too small to run a 15 ported in, but I bought it because I thought I could run a 12 or maybe the 15 sealed in it. Before you knock it, it&#039;s solidly built and I paid $10 for it, but yes, it does look like ***.Anyway, I bought it and later put the dimensions into a calculator and figured it should be tuned to around 34Hz:The box is 14&quot; deep, 15.5&quot; high, and 24&quot; wide. About 2.2 cubes taking into account the wood thickness (but not the port or woofer displacement)The port is 3.5&quot; x 3.5&quot; and extends 10&quot; into the box.I made an adapter out of 3/4&quot; MDF so it fits a 12 and I flared the left and right sides of the port with cut PVC. I believe the extra length brings the tuning down a bit. I don&#039;t actually know what the flares do, aside from possibly prevent port noise.I&#039;ve never had a ported box before, but it sounds pretty good to me. The sub in it is a Memphis Mojo PR, which I believe is more suited for a sealed box. It isn&#039;t crazy loud on 250W, but it definitely boosts the low end with only a little bit of SQ loss.Without any further digression, let me just ask: is that a proper port? Most slot ports I&#039;ve seen have at least one angle and often run along the back. Is this 3.5&quot; square column a functional port, or am I retarded?Thanks</blockquote>

[QUOTE="Umbra, post: 8421332, member: 658055"] The other day I was buying a AQ 15" sub on Craigslist and the guy also had this homemade box: [IMG]http://images.craigslist.org/01616_112kdWZj7di_600x450.jpg[/IMG] I'm not sure if he ever ran the AQ or any other sub in it. He told me it originally housed a 15" woofer and a horn tweeter and it was later modified for sub use. I could tell it was way too small to run a 15 ported in, but I bought it because I thought I could run a 12 or maybe the 15 sealed in it. Before you knock it, it's solidly built and I paid $10 for it, but yes, it does look like ***. Anyway, I bought it and later put the dimensions into a calculator and figured it should be tuned to around 34Hz: The box is 14" deep, 15.5" high, and 24" wide. About 2.2 cubes taking into account the wood thickness (but not the port or woofer displacement) The port is 3.5" x 3.5" and extends 10" into the box. I made an adapter out of 3/4" MDF so it fits a 12 and I flared the left and right sides of the port with cut PVC. I believe the extra length brings the tuning down a bit. I don't actually know what the flares do, aside from possibly prevent port noise. I've never had a ported box before, but it sounds pretty good to me. The sub in it is a Memphis Mojo PR, which I believe is more suited for a sealed box. It isn't crazy loud on 250W, but it definitely boosts the low end with only a little bit of SQ loss. Without any further digression, let me just ask: is that a proper port? Most slot ports I've seen have at least one angle and often run along the back. Is this 3.5" square column a functional port, or am I retarded? Thanks [/QUOTE]

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