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I'm about to dive into a project building a 4 x erf7530 amp. I'm kind working off the palomar fet 450 schematic.i have most of the parts in the mail, but the only thing i had to sub was the larger ferrite transformer. I couldn't find the larger 1 single beads. So i got the one with 2 beads back to back. I hope in make sense. It's really fit 4 beads but line up in 2 tubes. Will i have to make any modifications in turns or will it be the same as the schematic?