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View Full Version : ports and tuning



adio
12-27-2005, 02:36 PM
mixed up here and need some guidance. some peole say 1 port that that'll be good for both music and movies, some say 2 ports, 1 says 3.
i just don't know anymore-------> ( we all would like to thank lemans for convincing me i.e. shooting down my audiophile dream, that having 3 ports is a dumbasss idea. see how african americans treat me?!?! SEE THAT!?!?!?!!?!?:crying: :crying: )

thylantyr
12-27-2005, 03:53 PM
The woofer you chose and other factors will determine what tuning frequency is
good . Use one port for your design, keep it simple.

PV Audio
12-27-2005, 04:52 PM
LOL adio

JimJ
12-27-2005, 04:55 PM
The first idea (with one port) is a regular bass reflex enclosure.

The second idea (with two) seems like you're trying to build an aperiodic bichamber design, but that's the wrong way to do it. You can't arbitrarily choose your tuning frequencies for that, the chambers need to be carefully designed to interact with each other. Properly built, an ABC design can really extract a lot of output from small drivers.

I don't know what you're trying to accomplish with the 3rd design :)

adio
12-27-2005, 05:18 PM
The first idea (with one port) is a regular bass reflex enclosure.

The second idea (with two) seems like you're trying to build an aperiodic bichamber design, but that's the wrong way to do it. You can't arbitrarily choose your tuning frequencies for that, the chambers need to be carefully designed to interact with each other. Properly built, an ABC design can really extract a lot of output from small drivers.

I don't know what you're trying to accomplish with the 3rd design :)
me either. well kinda. i was tryna imitate the svs subs, but i don't know what that middle tuning would be good for (16 - 18Hz is good for movies and something in the higher 20's is good for music. what would the lower 20's tuning be needed for!?!? seems like waste)

PV Audio
12-27-2005, 05:21 PM
The first idea (with one port) is a regular bass reflex enclosure.

The second idea (with two) seems like you're trying to build an aperiodic bichamber design, but that's the wrong way to do it. You can't arbitrarily choose your tuning frequencies for that, the chambers need to be carefully designed to interact with each other. Properly built, an ABC design can really extract a lot of output from small drivers.

I don't know what you're trying to accomplish with the 3rd design :)
adio..you see that? didn't i say that?

:)

adio
12-27-2005, 05:23 PM
adio..you see that? didn't i say that?

:)
dear lemans,
yes, you did:crap: . i hate you :)

love,

adio

iagrdshaka
12-27-2005, 05:24 PM
i hate you adio!! your a dummy face!!

adio
12-27-2005, 05:24 PM
i hate you adio!! your a dummy face!!
:(

adio
12-28-2005, 10:22 PM
9.4 cubic ft internally ( use baltic birch wood), 2 4" ports from parts express,
both ports 9.5 inches long, both open =24Hz, 1 port open = 17Hz

WHAT?!?!!?!? SAY SOMETHING NOW!!!!!!!! WHAT!?!?!?!?

PV Audio
12-28-2005, 10:48 PM
something

adio
12-28-2005, 10:51 PM
something
:tomatofa: ahahaaaaahahaahahaaahhaahhaaahaah

80INCHES
12-28-2005, 10:56 PM
um
what sub r u using?

80

adio
12-28-2005, 11:17 PM
um
what sub r u using?

80
tempest