Plans for Pi Ten folded Horn please


Hello,
I am looking to build a rig for my bass guitar. I plan on using a Sunn 2000s head which puts forth about 120 watts by means of a quartet of 6550's. Ideally I would like to build up a pair folded horns loaded with 15's. The Pi ten looks to be very interesting. If possible, I would greatly appreciate any additional informationon the design.
Thanks so much,
Brian


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