Series tuned bandpass wall for 12 8"

[squdagee]

Hi, im struggling with my wall and gotta ask help from here.

So what do you recommend for ratio and liters for 12 Digital Designs redline 608. Im gonna put two DD's M4 amps for those at 0.66, approxamitely 12kw.

I have in mind of 140 liters to backchamber and 420 liters to front chamber so it would be 1:3 ratio. im planning to tune backchamber at 27hz and frontchamber in 45hz, does that sound bad?

And sorry for crappy english //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Click to read more...

 

[adulbrich 5,000+ posts]

We use cubic feet here, lol. I don't really feel like using a bunch of converters, but 3:1 sounds good as far as ratio.

However, you could do a LOT better with less drivers that are larger. You're going to have a lot of cancellation.

If you can, do something like 6 12's or 4 15's of a higher series.

4 15" of the 4" coil redline subs would be way better than that in a 2:1 ratio box with two M4's

 

[squdagee]

Ok sorry, i converted those and the backchamber is 4.95 cubes and the front chamber is 14.85 cuft. And yrah i know but the local dealer sold those cheap becourse of advertising the 8" subs //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif but im gonna change these in december to something bigger.

 

[tymoto21 10+ year member]

If you will change them in December I would just do a standard ported

But if you are doing the 6th order the second tuning seems rather low

I would bump it up around 50-54hz