We typically did somewhere around 5-6 cubic foot per AV15H, tuned just under 20hz for our subwoofers. This was using a pair of 18″ PR’s though that allow for the lower tuning. If doing vented the 85L could work well.
Many thanks for the info, I used Unibox and WinIsd to model 85L, if I’ve done it right lol, and I think I would need a 2nd order Butterworth HPF @ 18Hz to keep within xmax using a 1000W amp, does this sound correct?
Hi, I was thinking of building a ported enclosure, I have never done this before, my previous self build was sealed.
That’s why any advice on enclosure size for these drivers would be greatly appreciated. I have modelled the driver in Unibox and WinIsd and see 85l with a butterworth 17Hz HPF keeps everything under xmax, but I could do with some guidance on port size and length and port air velocity.