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Experience on 8th orders?


eltortuga94

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Posted

I just built 4 calculator for those 8th order formulas and its giving me chamber volumes from .67 to 30 cubes, for a single 15, and freq ranges from a 7hz band to a 90hz band.

and one design called for a chamber tuned to 6hz then one to 200hz then one to 35hz.

ive checked all the formula entries, but the only thing that could be wrong would me my reading of the forumula since its on several different lines

the butterworth seamed to have more realistic tuning expectations and a nice pass band, but it did want chamber 2 to be 19 cubes and chamber 3 to be 17 cubes

Posted

I just built 4 calculator for those 8th order formulas and its giving me chamber volumes from .67 to 30 cubes, for a single 15, and freq ranges from a 7hz band to a 90hz band.

and one design called for a chamber tuned to 6hz then one to 200hz then one to 35hz.

ive checked all the formula entries, but the only thing that could be wrong would me my reading of the forumula since its on several different lines

the butterworth seamed to have more realistic tuning expectations and a nice pass band, but it did want chamber 2 to be 19 cubes and chamber 3 to be 17 cubes

Wow, that's alot of jumpin around with the volumes of the chambers.

What is butterworth? I've heard about it a few times & seen it alot in enclosure designing calculators.

System:

Basically Stock

In process of upgrading

Posted

what the 180 cars use. here in aus the volvo is 8th order.. doing 170s lol but think the port ends up being basically where the mic sits? or fires at it lol some shit i don't remember.

AUSTRALIA do i need say more?

HU: some crap pionee

AMP: dc 9k @ 18v

SUB: 4 elevation audio sqx 12"

Battery: 2 neuton power 8200d

burp setup for fun 152's

soon to come: rebuilt soundstream xxx (2 18" OR 3 15" wall) Bunch speakers, more batts and new HU

Posted

I posted that to imply I was a noob, and about to ask a question... So either you misunderstood my post or are one of the people on here who hate my guts. Either way, this isn't the place for that. Pm me if you want to talk shit

id highly suggest taking a wide circle around david and not cross him.

good advice from nate lol. and to up that one more, walk a circle around nate also lol :peepwall: 2 guys that you wanna stay on their good side

Alpine CDA-9886Hertz Mille 3 ways active

Hertz SPL Show 8's

2 Audison Voce Quattro's2 DC Audio M2 Level 5 12'sDC Audio 12.0KKnuKonceptz Wiring4 XS Power D3100'sDC Power 390XPSecond Skin Damplifier Pro and Dynamat Xtreme

Esy3YgK.jpg

Posted

I just built 4 calculator for those 8th order formulas and its giving me chamber volumes from .67 to 30 cubes, for a single 15, and freq ranges from a 7hz band to a 90hz band.

and one design called for a chamber tuned to 6hz then one to 200hz then one to 35hz.

ive checked all the formula entries, but the only thing that could be wrong would me my reading of the forumula since its on several different lines

the butterworth seamed to have more realistic tuning expectations and a nice pass band, but it did want chamber 2 to be 19 cubes and chamber 3 to be 17 cubes

Wow, that's alot of jumpin around with the volumes of the chambers.

What is butterworth? I've heard about it a few times & seen it alot in enclosure designing calculators.

It was just one of the filter forms to give me some of the numbers,

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