Port tuning on my subwoofer box

[rogue]

Well the taper is no more than .5 inches. Starting smaller and getting larger and larger as the port extends.

I'm thinking that I make the box larger, and change my port to fire backwards, sub up. And hopefully get a nice increase. I have a Subaru Outback.

Not sure why you did this taper, but i cant see it being good in any way on a regular ported box.

How it the port and sub oriented now? Sub up and port back is usually a good choice in a vehilce like that.

[Nikitaaa]

Right now, it's sub back, port back.

I really didn't mean to tune it in this orientation, I was in a hurry to get her bumpin.

I'm kinda new to building boxes.. How can you have the same tuning, but more port?

Can anyone help with a box design? :/

[rogue]

i can't tell you for sure... it's more of a guess and check thing, but more port area should definitely bring you better scores. i hear AQ subs like big boxes, so possibly somewhere in that volume range. i'd probably do about 4-4.25 cubes if you have the room to spare.

gotta be careful though, you're overpowering the subs some

I Have to disagree here on the power, I did a friends with a HDC3 12 and a AQ 2200 and it seems capable of taking more, so i wouldnt think 1700 would cause too many problems. Those subs are underrated RMS wise.

[rogue]

Right now, it's sub back, port back.

I really didn't mean to tune it in this orientation, I was in a hurry to get her bumpin.

I'm kinda new to building boxes.. How can you have the same tuning, but more port?

Can anyone help with a box design? :/

The length and box volume will also affect the tuning so port area isnt the only thing that changes the tuning

[streetfighter]

It sounds like these guys are familiar with your sub, which i am not.

The only info i would add if you are going for max SPL, is to verify (if anyone knows and will share) if there is any peak in the Outback you should be trying to aim for tuning wise.

If so then tune just above that, and use tones near tuning frequency. Should get you close to max SPL achievable with your particular vehicle and equipment.

[Thomas B]

tapper is bad... and being tuned to 42 is probably adding to your db's. I would say more box more port and no tapper.

[412 CVX]

I realize they're underrated, but still, better to be cautious until you know how the sub likes its new environment.

[412 CVX]

I could design you a nice box if you'd like. just shoot me a PM anytime.

[rogue]

I realize they're underrated, but still, better to be cautious until you know how the sub likes its new environment.

Yeah you're right, not everyone knows when things are in the process of breaking. Something you figure out once you've broke a few. lol

[Nikitaaa]

So it turns out I have about 56 inches of port area. I'm guessing this isn't enough? My trunk space is about 22w-18h-25d. I would really appreciate some tips on how to make a box design around 4.5net and 37hz with 90 inches of port.