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RE: OK now I am totally confused...

Posted by tyu on June 5, 2012 at 04:31:00:
My take on the Acoustat mod 121 interfaces....

The input side primary of the high tranfourmer...
nothing on the pos +input....
if you feel you need anything to help with overlode 1ohm 25watt on the neg. leg...
same high frc.tanfourmer on the output side secdary...two caps...stock caps were .01 5k work fine....i went with .0015 6k caps...the acoustat are over 30years old..

on the base tranfourmer inputside primary ...nothing on the pos.+
on the neg. input the stock 1ohm 20 is fine

on the base tranfourmer output side..secdary..i have the stock 50k 100w in....but it well work with out the 50k or any res...the acoustat panels are diff than the one big SL panels...

The Mod here is to get all the caps an res. out of the high frc,tranfourmer...makes big diff in the sound an SPL of the Acoustats

...the 121 stock setup is in the other post... goodluck