isobaric 6th order designer

[jroo]

Folks, who would you recommend as a good 6^th order designer? I have had a couple of 4^th orders before, but never tried a 6^th order and my understanding is if the design isn’t right these things don’t perform well at all. I am looking at the MCM 8” subs and want to do 4 subs in an isobaric 6^th order. They would see about 700/800 rms from an older Rockford 800a2. Again, who would you recommend for this?

BTW, here are the subs I’m looking at.

http://www.mcmelectronics.com/product/MCM-AUDIO-SELECT-55-2421-/55-2421#reviews

[Triticum Agricolam]

I've used those subs before. They work really well in tapped horns. For other style enclosures they are kinda hard to work with. I took a stab at a 6th order design in WinISD, here is what I came up with:

My design isn't isobaric as I don't think isobaric is going to work out. To get decent response the front chamber would have to be so small it would be almost impossible to build. As it is I think you are going to have a REALLY tough time designing an enclosure to fit those specs.

Also you have to get the tuning JUST right for this thing to work like it should. If I were to build it I would use external ports, make them oversize, and then trim them down until you got the tuning where it needs to be by measuring the impedance curve.