Centered port with single sub setup?

[miker 5,000+ posts]

Any design pics? I'm just trying to keep my options open.
Is the aero going to be internal or external? What about sub placment?

Well.. It jsut snowed a shit load.. And I was wanting to use the table saw for this build, so I don't think it's happening for a little while...

Anyway, the Aero is going to be internal and external. I'm thinking of mounting the sub on the top so the amps don't get in the way of it.

Idk, it's not really anything special.. Just something I'm hoping will get louder than porting to the rear of the trunk..

 

[bjfish11 5,000+ posts]

What about something along these lines?

 

[rumple4skin 10+ year member]

i don't know much about box design( just payed some *** hole to make my box) but this looks like about how it will look(as long as boxdesigner says it can be tuned to the right frequency) and i believe you can leave the sub pointed to the back of the trunk if you like as well i believe and just mount the amps on top of the box instead of in back

 

[SHiZNiLTi 10+ year member]

Why not a 4th order bandpass?

This way the trunk gets no vibration at all with the sub sealed inside of the box.

All of the bass output is coming out of that port.

 

[rumple4skin 10+ year member]

lol thats a better idea=)

 

[chambiec1 10+ year member]

Why not a 4th order bandpass?

This way the trunk gets no vibration at all with the sub sealed inside of the box.

All of the bass output is coming out of that port.

I've always read you need more space than a traditional ported box to do a proper 4th order.

 

[bjfish11 5,000+ posts]

The 4th order 80 designed me for my Q, was just barely larger than the ported box I had it in before.

 

[chambiec1 10+ year member]

The 4th order 80 designed me for my Q, was just barely larger than the ported box I had it in before.

How was the output of the BP compared to your ported box?

 

[bjfish11 5,000+ posts]

How was the output of the BP compared to your ported box?

Judging by ear... Id say output was very close to the same. I think the SQ of the BP is better. For comparison, it was in a 2.5 cube @ 32 hz ported box, not sure on the specs of the BP.

 

[chambiec1 10+ year member]

Bump for more suggestions.

 

[IDSkoT 5,000+ posts]

It can be done. I think the SPL is boosted a lot with this set-up.

But, I'd go with the 4th Order Bandpass.

I'm actually thinking of doing this for my car ('98 Mustang) firing the port right into my cab.

 

[chambiec1 10+ year member]

Would something like this work? I've seen it done with 2 subs, but am not sure if it would be effective with only 1. Would it work better with the sub up?

I'm no acoustic engineer, but would a box like this sound/work properly? I'm unfamiliar with the travel of sound waves vs. placesment of sub/port, so help would be appreciated.

-Casey

EDIT: designs by JBLCAMRY, *not to spec*

 

[miker 5,000+ posts]

Umm, that was my first idea.. WAs told that port noise would be terrible.

 

[chambiec1 10+ year member]

Umm, that was my first idea.. WAs told that port noise would be terrible.

Even with sub up? I know alot of guys do it with multi sub setups, but is it the single sub causing port noise to be present?

 

[chambiec1 10+ year member]

Alright, so if I were to go with a 4th order BP, how big are we talkin to fit my 15" Kicker L7?

My dimensions I have to work with are 36"(width) X 17"(height) X whatever depth(although I found that my current box, which is 20" deep, was a perfect fit through the trunk opening).

I listen to primarily rap, and it is a daily box. I like my lows alot. My current box is 36"x18"x20", 4.5^3FT tuned to 34Hz, and would like to drop my tuning by a little bit. If it matters I am running just about 1500wrms in it's current config.

Could anybody give me some suggestions on a design for a proper 4th order, given my sub and measurements? Any help is appreciated.

-Chambie