I acquired a pair of JBL 2206J 12" drivers. I installed them in a pair of JBL L-100 Century cabs. I plugged the original port with foam and took the round wood piece that used to be on the back of the mid drivers sub enclosre and tapped that into place with a hammer since it was tapered just right.
Leaving the tweeter opening intact left approx 3 1/2" dia port that is 1" deep. Winisd pretty much verified what I suspected with a port tuning around 60hz. WT2 verfied my guess being within 1.5 hz of my prediction.
I'm currently running this with my modified 3-Pi crossover running to my JBL 2446/Be diaphrams/500hz Edgar tractix horns powered by a pair of Baldwin Model 40 mono-blocks(6L6G PPP).
I mainly set this up to break in the 2206's which are quite stiff on the suspension just like the 2226's I have used in the past. I have approx 30 hrs so far and they are loosening up nicely.
Wayne, do you by chance have the original plans/crossover for the 3-Pi utilizing the 2206. I know they are yesterdays systems, but I think it is a exciting system with more bass than I had expected.
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