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<blockquote data-quote="shizzzon" data-source="post: 6215315" data-attributes="member: 590338">There&#039;s another reason i&#039;m bout to start testing.I started an advanced thread about this over on SSA because i have a wall that i am currently building for next season comps and just ran into a.. well a wall(obstacle) on port tuning.I have finally found the best port for my wall but if i want anymore output, i&#039;m gonna need more internal volume.I&#039;m about to order a load of Acousta-stuf.. the expensive stuff and start doing testing with it in the box and in and around the port with a meter.Basically, when sound passed through it, it will heat the surrounding air up making the air less dense which will allow the sound to flow quicker.This phenomenon makes the sub think it&#039;s in a larger box.I have theories but must be tested to conclude results-Sound must pass through first or nothing will happen...so what happens when it&#039;s in a port?&nbsp; Does it increase volume of a port and if it does... are all 3 dimensions increased proportionally resulting in the same tuning or does tuning go up since sound is flowing faster?If packed too tight, it will make the sub think the volume has shrunk so be careful!You also do not want this stuff touching speakers.For my testing, if it does succeed in increasing volume, then i should see an increase on the meter when i rebuild the port to peak at my note...These tests will commence in about a week from now.</blockquote>

[QUOTE="shizzzon, post: 6215315, member: 590338"] There's another reason i'm bout to start testing. I started an advanced thread about this over on SSA because i have a wall that i am currently building for next season comps and just ran into a.. well a wall(obstacle) on port tuning. I have finally found the best port for my wall but if i want anymore output, i'm gonna need more internal volume. I'm about to order a load of Acousta-stuf.. the expensive stuff and start doing testing with it in the box and in and around the port with a meter. Basically, when sound passed through it, it will heat the surrounding air up making the air less dense which will allow the sound to flow quicker. This phenomenon makes the sub think it's in a larger box. I have theories but must be tested to conclude results- Sound must pass through first or nothing will happen... so what happens when it's in a port? Does it increase volume of a port and if it does... are all 3 dimensions increased proportionally resulting in the same tuning or does tuning go up since sound is flowing faster? If packed too tight, it will make the sub think the volume has shrunk so be careful! You also do not want this stuff touching speakers. For my testing, if it does succeed in increasing volume, then i should see an increase on the meter when i rebuild the port to peak at my note... These tests will commence in about a week from now. [/QUOTE]

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