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View Full Version : ABC im thinkin of building pics



mobeious
10-11-2007, 12:04 AM
http://i7.photobucket.com/albums/y290/mobeious/Untitled-13.jpg

single 10"

MemphisCherokee
10-11-2007, 12:41 AM
those ports look like they/re different lengths
it may just be the isometric angle playin tricks on my eyes....


...tuning?
...airspace?

build it and tho up some pics

jblayz1
10-11-2007, 02:02 AM
looks like something you'd put a critter in.... :D

Immacomputer
10-11-2007, 02:50 AM
Eh, it's really not worth your time if the sub has a decent amount of throw.

twisztdauthorit
10-11-2007, 02:52 AM
why the boards in the middle???? am i seeing it wrong?

95BlackGA
10-11-2007, 02:54 AM
What exactly can a ABC enclosure provide over a 'regular' ported box, or a t-line?

Immacomputer
10-11-2007, 02:55 AM
What exactly can a ABC enclosure provide over a 'regular' ported box, or a t-line?

Those are two completely different enclosures.

The only thing the ABC enclosure does is basically keep cone excursion down to a minimum over a two sets (or more) of frequencies instead of one. You will not usually see a rise in output around the upper tuning like you would think though. It's really a disappointing design that takes up too much space.

req
10-11-2007, 03:05 AM
higher order bandpass is where its at.

basically you are throwing another tuning point in the spectrum. gaining peaks at two seperate frequencies and retaining cone control.

shavenblazer
10-11-2007, 03:11 AM
Just build a regular slot port.

Immacomputer
10-11-2007, 12:57 PM
higher order bandpass is where its at.

basically you are throwing another tuning point in the spectrum. gaining peaks at two seperate frequencies and retaining cone control.

But unlike a bandpass, you're not driving the separate chamber with the driver but rather with the port resonance. It does add more cone control as the resonance of the second chamber does still cause a high pressure zone to limit excursion but the driving force isn't as great as when the sub is firing into both chambers. So really, you don't get the extra peak at the higher tuning frequency but just the cone control.

That is exactly what I noticed when I built mine.

jellyfish420
10-11-2007, 01:31 PM
higher order bandpass is where its at.

basically you are throwing another tuning point in the spectrum. gaining peaks at two seperate frequencies and retaining cone control.

i'm a big fan of the 6th order series.

dbhittin
10-11-2007, 01:35 PM
i used to build those all the time

req
10-11-2007, 03:11 PM
all i can tell you is there are a few extreme competitors with 6th order bandpass boxes peaking ~60hz notes, and can play daily music with the same box. and doing over 170db at the same time.

just what i have noticed ;)