Soundqubed HDS312 box help/opinion needed.

[walwalka]

As some of you may know, I have had issue with my current box and the HDS312's just don't like it much. So I'm looking to build a new box to solve this problem. That being said, I'm not sure what route I want to go because this has been my first attempt with aero ports and I'd rather not have issues again.

I have talked to another member and he still suggested aero's for making use of flares for 100000000% better results than with the non flared 8in I have now.

This is for two HDS312's

Here are my options that I have come up with: For the few who are much better with this stuff. I want VERY LITTLE to Zero port noise even a few hz below tuning. Tuning to 33hz, would like to play 28-30hz with little noise. I know it can be accomplished what are the best practices?

Slot port: Will probably make the port an inch or two longer as I just noticed it's basically 34hz.

Aero port option with a twist. I thought adding a second 6in port for an SPL tune of 45hz would be a nice touch! I would get a 6in pipe plug to block it off. Does this even remotely sound like a good idea? You tell me, you know what I'm looking for.

Daily:

SPL:

Any tweaks that would make either if these enclosures better? I'm not a box designer, I have just been reading up on the things I should do and I think these look good. What would you change or do differently?

Also, HDS312's have a really high QTS. So small box, small but enough port is probably the best. But What do I know, lololol.

Sub specs:

Piston Diameter 203.2 mm

Mounting Depth 7 11/16"

Circle Cutout 11.25"

Overall Diameter 12 7/8 with gasket

Xmax 28mm Peak to Peak

Magnet Weight 145oz

f(s) 33.65

Q(ms) 6.912

Q(es) 0.769

Q(ts) 0.692

V(as) 22.130 liters

Thanks Guys!

[timc31610]

Is this for one or two subs?

[DubNDodge]

@timc, 2.

walwalka you should know all soundqubed subs love big boxes. Hell they even told me they were drop ins for a sdc2.5

[walwalka]

Is this for one or two subs?

It is for two!

@timc, 2.

walwalka you should know all soundqubed subs love big boxes. Hell they even told me they were drop ins for a sdc2.5

lolol I knew it.

[walwalka]

Any thoughts guys?

[timc31610]

I would try to bump the net up to 5 or a lil more, I also don't think the single 6 inch port is enough in the top torres shot. I have a single HDS312 in a box with 2 4" ports and it can get a little noisy at times.

[walwalka]

I would try to bump the net up to 5 or a lil more, I also don't think the single 6 inch port is enough in the top torres shot. I have a single HDS312 in a box with 2 4" ports and it can get a little noisy at times.

I had 5^3 with my current box..... It was too much for these subs, They were unloading, so it was a combination of too much port and too much air space. I made the box 4.3^3 and magically the unloading was gone.. That's why I'm build a new box, I also have a single 8in and it gets noisy at times. That's why I'm going single 6 with flares.