Magnatone Varistors  [found/sold]

Looking for a particular component or hardware part and you just cannot find it? Got comoonents surplus and want to get rid of it? Post it all here... No sales of working pedals, put these in the 'Seen for sale' section please.
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KindaFuzzy
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Post by KindaFuzzy »

I know these are super rare, but you never know so I thought I'd ask. After seeing Phil x do all those demos on youtube with his 213 or 250 tonemaster amp, I thought It would be cool to build one of those amps. The only info on the varistors in the vibrato circuit I could find was some part numbers, FR1039 and FS308 which were 1MA @ 68v and 1MA @ 110v silicon carbide varistors.

Does anyone have a few of these or know of a work-alike and where to get them? Thanks.

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frequencycentral
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Post by frequencycentral »

Can't help with a source for origianls, but I rememeber RG posting somewhere that modern varistors differ so greatly to the old ones that it makes them unusable in a Magnatone vibrato circuit. :(

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KindaFuzzy
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Post by KindaFuzzy »

Yeah, I found that post too, boo-urns for sure.

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KindaFuzzy
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Post by KindaFuzzy »

I can't believe I found some of these guys! Does anyone know what the markings stand for, I'd hate to kill one with too much voltage or something.

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gmr1
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Post by gmr1 »

Huh. IIRC, I think I have a box of those in the basement that I got as part of a huge parts lot from an old radio repair guy a few years back. Figured they were just antiquated resistors or something along those lines. I'll have to dig them out and see what I got.

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KindaFuzzy
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Post by KindaFuzzy »

Yes, and then we'll have a chat. :D

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Whoismarykelly
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Post by Whoismarykelly »

I have a Magnatone TC1 chassis with the vibrato circuit if you want a full set of varistors and some other original parts like transformers, etc...

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odgeuk
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Post by odgeuk »

I'm after a pair of these for a Magnatone clone. Can anyone help :D

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tacromx
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Post by tacromx »

This thread is quite old now, but i found this pdf which might be of use, in it is a workaround using 3 MOV's and three resistors in order to closely match the V-I curve of one Magnatone varistor.

Also there's this if you have the money.... http://www.ebay.co.uk/itm/Matched-Pair- ... 28059f5d49 seems a bit extortionate though.

PDF @ http://dalmura.com.au/projects/Magnaton ... design.pdf

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Zack Engineering
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Post by Zack Engineering »

I have NOS Magnatone Varistors for sale. Tested in the Magnatone vintage vibrato circuit, meets or exceeds the original specs.
1/2-watt and 1-watt values

Go to Amazon.com search: Varistor NOS

Thanks, Zack
503-757-6654

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