Quick question - ported box.

[S(Q)PL 10+ year member]

Hi guys. I'll be building a ported box for 2 audiobahn 10" this weekend, and I have a question. The Vas for this particular sub is .85 cuft, displacement is .10, which gives .95cuft per chamber. Since I'm porting this box, should I increase the cuft per chamber? Would appreciate some numbers //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif . Also, this box will be for SPL, tuned at 40-45hz. Round or Square ports, which would be better?

thanks,

Rick

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[BassBoomer 10+ year member]

the bigger the box the better for ported boxes.

 

[S(Q)PL 10+ year member]

ok, thanks for the reply. Any suggestions on how many cuft per chamber?

 

[Wonderbread 5,000+ posts]

vas is not a number you want to be looking at, unless you know what it means, and how to implement it alongside the other T/S parameters...

which audiobahn drivers are you talking about..

give me model numbers and year.

 

[S(Q)PL 10+ year member]

The model - AW100Q

Year - 2002

Thanks

 

[Wonderbread 5,000+ posts]

try 1.6 cubes before the drivers displacement, but after the port displacement... tune to 33 hz, and use a common chamber...

 

[S(Q)PL 10+ year member]

Just to be clear, 1.6 cuft total volume, or per sub? 33hz would be right for an SPL box?

Seems I was way off, but thats why we seek advice from those that know //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif . One last thing, just out of pure curiosity, why use a common chamber?

 

[Wonderbread 5,000+ posts]

per sub...

that's a little low for a pure SPL box, but a good spot to use for a daily driver to get them loud.

use a common chamber because it's the only way to make sure you ahve them both tuned to teh same spot...

 

[S(Q)PL 10+ year member]

Wonderbread - thank you sir for the help //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif. I'm planning to use 2 3"dia round ports, proper length for 33hz... that ok?

 

[Wonderbread 5,000+ posts]

should be ok...

im a fan of teh slot port, but it should be fine...

 

[S(Q)PL 10+ year member]

hmmm now that you mention it, a slot port would be easier with a common chamber. I'll look into that. If it's within my ability, I'll go for it. Thanks again.

 

[Wonderbread 5,000+ posts]

no problem.

 

[S(Q)PL 10+ year member]

Just an update..... Box is built, ports are tuned, subs installed, and to be honest, I'm impressed. These are low end audiobahns, and the general consensus is they **** for SQ, but they're not half bad. On the SPL side of things, they are LOUD, VERY LOUD. I didn't expect this, but hey, it's a nice surprise. I'm really VERY picky about my mids/highs, but I'm fairly easy to please on the low end.

I'm going to credit the recommendations from Wonderbread (and the nice gain from my jeep cherokee ) for this awesome success. Thank you very much, Wonderbread

 

[Wonderbread 5,000+ posts]

no problem...

its good to be appreciated once in a while... most of the time im dead wrong, so this time i'm very happy with myself... go team! lol

PS - we would all like to see pics if you can get some!