aperiodic membranes

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07-16-2004, 11:16 AM

Nissan Guy

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I am having a tough time getting any smooth bass response out of a pair of freeair door speakers, and would like to explore the possibility of AP mats to enhance my up-front mid/sub bass.
I have noticed that freeair does not give the type of punchy bass that I would like(regardless of sound dampening, and driver), and sealed is barely feasable in my application because I can barely get .15 cuft. Who has any experience with this type of challenge, and what soloutions are there to getting bass out of a small door?
Any expertise is appreciated...

07-16-2004, 12:49 PM

Paul Niwranski

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Make it easy on yourself and get a pair of Vario-Vents. ScanSpeak and Dynaudio both make them.

07-16-2004, 12:54 PM

Nissan Guy

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Vario-vent you say...
Do they mount behind the speaker in a wee little sealed enclosure? Do they work well for a mid bass?
Thanks Dukk!

[ July 16, 2004, 01:54 PM: Message edited by: Nissan Guy ]

07-16-2004, 12:56 PM

Paul Niwranski

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That's pretty much what they were designed for. [img]graemlins/thumb.gif[/img]

Of course you can make them easy enuf but why when they are only like $15 a pop [img]graemlins/dunno.gif[/img]

07-16-2004, 01:16 PM

Nissan Guy

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That's what I had in mind.
I would imagine that it would be roughly 5-6" in diameter, and be a handful of fiberglass sandwiched between mesh? Does this sound about right?

07-16-2004, 01:28 PM

Paul Niwranski

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Exactly. I have a pair of the ScanSpeak at my place right now - the inside grate pops off so you can add or remove for tuning if desired.

They're about 4" of grille area and 5" OD