I just swapped out the old RC4136s for new ones. I'm convinced the brown dogs/different op amps would just open up another can of worms, same with changing to 1% resistors. We'll get to the notch filter eventually.
I would like to see if I can 3D print that plate for the RCA jacks
My C-1 is back in the chain. Sniff Built regulator and EZ Gain, all new 'lytics and RCs, plus a remote volume pot kit.....and I can't find the damn remote. I still have the lousy stock RCA jacks tho, might be my next mod.
Late to the thread but
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I also re-voiced some Cerwin Vegas and they turned out nice and loud (Dayton AMT tweeters to replace the poly domes, some mods to the midrange, and new crossover capacitors)