[rem oil]

I use Gibbs.

[What is your box tuned to?]

28hz for me.

[Aero ports in a wall.]

There's a reason why the you never see the big guys running aeros in their walls.

[Question About JL 13W7AE]

Get my old school Alpine MRV-1507 and bridge it.

[A good clean sub]

12" Morel Ultimo.

[Sp4 18 ported box help]

You could do something that is 36" wide x 23" tall x 23" deep. This would include a double layer baffle and ample bracing to keep the box from flexing with that low-end monster you're wanting to run. If you want to double layer the whole thing, then we can do 36" wide x 25" tall x 24" deep.

[New enclosure design???]

What vehicle?

[ported box help for 4 pioneer champion pro 12s]

You have plenty of room to make something work in that Tahoe. I'd do subs firing up in a V formation with a vertical port firing towards the back, centered between the subs...kinda like this:

[4 subs or 6 ??????]

You could also get the new SSA Gcons if you want to run a pair per amp.

[4th order sealed section question]

Yep, common chamber is easier if the layout works with your dimensions and where the port will need to be.

[Need a Box Design lev 5 18s wall]

Unless you're running a ton of power, go big with the box volume.

[Difference in two designs]

To the ear you're probably not going to notice much of a difference, if any at all. IMO a single chamber with a single port that has fewer turns will give you a better change to meter higher, if you're worried about that. Also, with the SA-10's there's no need to double baffle the front, they're just not that heavy. But if you want to, it's certainly not going to hurt anything.

One thing I don't like in the second design is the sharp corner/point at the end of each port.

[orion hcca 15.2 box and amp]

The sub cutout itself is a hair over 15", so good luck with that.

[2 sa12 port help needed please]

If you want to change tunings easily, an aeroport is your friend. In the case of a slot port with that box, do a vertical port. Having a horizontal port stretching the entire width of the box is not realistic in this case.

[02 GMC Sierra 1500 ext cab]

Not enough room once you take into consideration subwoofer, bracing, and port displacements. With 13ft^3 gross volume you could probably do three 15's, but you'd need to do a wall to do all four subs.

The sub displacement for 4 is .704 ft^3 and bracings won't take off more than a cubic ft at the most plus the port volume would be .36ft^3 if I tune it to 33 Hz going 8hx10wx7.85l (inches) and its not a slotted port so putting all that together it seems like I do have enough room

I was under the impression that you only had 13ft^3 of gross volume to play with. Also, you need to use a lot more port....shoot for 150-175in^2 if you're using decent woofers.

[Can a battery be bad but test good voltage?]

Yes, it can read a good voltage but still be useless. You need to have a load tester to put a load on it and see what it does. If it's bad, the voltage will drop quickly down below 11V.

[True RMS of SAZ-1500?]

If you have a decent charging syetem and wire down to .5ohms with a paird of D2 subs, you'll get more than enough power.

[New box question, RE XXX 15"]

Is this the 15" model? If so, aim for ~4.5ft^3 tuned to 30hz with ~60in^2 of port. The new XXX's need large low-tuned boxes to work well.

[02 GMC Sierra 1500 ext cab]

Not enough room once you take into consideration subwoofer, bracing, and port displacements. With 13ft^3 gross volume you could probably do three 15's, but you'd need to do a wall to do all four subs.

[Port area]

Sealed>ported for SQ is just an old wives tale lol

I prefer ported, but sealed boxes will always have better transient response due to the lower group delay. There's no way to argue that. And for people who are into real SQ setups, good transient response is very important when it comes to accurately reporducing REAL music.

[Box For 8x 10" JL's in a Magnum]

This is one of two boxes that I did for Torie Nelson and his 2005 Dodge Magnum. The subs being used are the newer W0V3's, eight of them as you can tell. Final volume is 8ft^3 with a 32hz tuning.

[Re Audio 15"]

Just depends. Don't worry about it, as you have no control over it...just play and enjoy.

[Old School RF HX2 Boxes]

I like the one on the right. With 6 subs

He does too. I think he'll go that route for the easy tunability.

[Old School RF HX2 Boxes]

Nice!

Thanks man.

[Old School RF HX2 Boxes]

Here is a couple of designs that I did for Avery Newton and his old school Punch HX2's. The one on the left is 14.5ft^3, and the one on the right is 13ft^3...both tuned to 33hz. As you can see the right one has a removable port so he can slap in a spl tuning for burps.