Second opinion on 10" Subwoofer box?

[JG474]

Had the sa8v2 entered earlier and ran it:

Blue and red - compensated

green and yellow - anechoic

Sealed spec: Vb = 0.28 cubes net, ported spec: Vb= 0.5 cubes net @ 35Hz

And yes at the recommended net volume range it will peak a lot, so no wonder how this subs manage to get loud being small.

I don't think the SA-8v2 can be ran sealed; Here's the box I currently use:

What specs do you have for the SA-8v2? Here's what I have, I think I found it posted on here awhile ago:

[JG474]

For SQ flat performance I would look in to a 12" made for sealed SQ sub like the image dynamics IDQ sub.

The Dayton Audio 10" or 12" HO DVC subwoofers are made for sealed and SQ. And I measured the length of the interior of my car; ~120" from front windshield to back windshield, ~43" trunk length. This should give me a total of ~163", which gives me a wavelength of ~83.25Hz.

So I'm guessing I should change my +3dB from 50Hz to 83Hz?

Edit: Here's the Dayton 12" HO DVC, yellow is sealed w/o cabin gain, red is with cabin gain with +3dB at 50Hz, orange is with cabin gain with +3dB at 83Hz

Edit 2: From looking at the image from this website, I think I should go with a +3dB at 55Hz or 60Hz. The lighter green being +3dB at 55Hz, the brighter green being +3dB at 60Hz. I honestly don't think it would make too much of a difference in response, so I think I'll build the 12" Dayton's enclosure and see how it goes. But what about bracing in a sealed enclosure? Should there be a lot, or is the box too small to have proper bracing?

Edit 3: Scratch what I said in the first edit, on the website I linked above, I found this in the first post:

So I'm supposed to take the longest dimension, which in my case is ~120", and multiply it by 2, giving me 240".

I'm definitely okay with this estimated response .

[Joe X]

The 50Hz + 3 dB they use is good ballpark estimate for most vehicles according to them but really if you want any level of rough accuracy you need to enter measured data there is no other way. I pointed out to you the cabin gain issue so that you just wouldn't go massively off in your estimates.

If you do a sealed box do a slanted box and add some damping material inside for better results, the single 12" in sealed would result in a small box that likely won't need bracing, just use 0.75 wood, build solid and use sealant. Hope you like it since most of us find sealed lacking in low end and most will migrate to ported sooner or later.