Tweet
I was in need of one of the inductors for the 60's Acoustic amps eg: mod: 230 and others with the brown potted inductors on the EQ board.
I was searching for the 3 Henry inductor for the 70Hz & 125Hz bands and found an entry in TalkBass that solved the issue. I'm copying the post here for anyone for anyone it might help:
From TalkBass Forum in 2008:
"I did a little research on the guitar forums, specifically about varitone circuits that use 3H inductors and found a thread about one guy that uses very small audio signal tranformers that are basically 3H inductors. he mentioned that the Xicon #42TM018-RC is a 1:1 transformer that measures 3H on both sides, and end to center tap on each side measures 1.5H. i bought two of them (just to have a spare!) from Mouser for $2.47 each + shipping and they arrived today for testing. [They're $4.89 now!]
On one side of the transformer, it has a DCR of 601 ohms, and the other side measured 502 ohms, which is a little bit higher DCR that the original one, so i decided to use the side with the lower DCR. Russ advised me that since inductors are basically an antenna, that i should leave it's leads long, just in case i had to reposition it (possibly turn it 90 degrees) so that it wouldn't induce any hum in the circuit. so the first way that i tried it was to just mount it standing up in a row with the original ones. i turned the amp on and voila! it works perfectly"
Hope that helps someone at some point. I haven't tried it yet until the est is ok'd. I'll try to recall to update with the results if the dude ok's the estimate as the amp has other more significant issues.
I was just thrilled to not have to be the one to take all the time to hunt down a sub for the inductors. I'm not even sure how this dude found out henry value of the primary of this xformer.
glen
Attached Files