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Over the past few years I have seen two Big Muffs with V3 “EH3003” circuit boards, but also with the tone bypass switch and “AC TONE BYPASS” in the graphics. My research has indicated the tone bypass only appeared on the V5 and V6 Big Muffs. The “AC” first appeared on the last V3 Muffs around 1978. I assumed these bypass V3 Muffs were not production Muffs, but ones cobbled together from parts of different Muffs. I have run across lots of oddball Muffs like that, and even put together a few myself.
I was just sent photos of another one of these recently, so I asked Howard Davis (manager of analog circuit design for E-H from 1976-1981) if he recalls who came up with the tone bypass, and when. Howard is not 100% sure, but he thinks the tone bypass may have already been in use on the Big Muff before he designed his tone bypass op-amp version. Now I am starting to wonder if this was a legit version. That would mean a small amount of the last V3 Muffs made had the tone bypass switch and graphics, then the bypass was dropped for the V4 IC version, then added back about a year later for V5.
Has anyone else seen one of these? Ron? Anyone?
Here are pix of one. V3 board, V4/V5 box and graphics, with knobs usually seen on V4(and later) Muffs, not on the V3.
Quote:sorry to throw this off task, but heres the mystery of the missing dollar :Three travelling salesmen checked into the inn.
The regular cost of the room is $30. Each man pays $10.
Manager overcharged them. She sends bellhop to their room with $5 refund.
Greedy, the bellhop, keeps $2, and gives each man back $1.
Here’s the perplexing puzzle:
The three men each paid $9 for the room. That’s $27.
The bellhop kept $2 as his “tip” but they originally paid $30!
Where’s the missing dollar?i remember as a kid, my dad would tell us this (my siblings and i) and i had forgoten it, until i just looked it up. i had to reread it, but i got it
what you just said makes no sense..
There was $30 at the start ….. $25 payment to the manager + $2 pocketed by the bellhop and $3 refund to the traveling salesmen ….. that adds up to $30. … don’t worry, nothing is missing.
Back to the topic of useless Muff history
Howard shed some more light on this. He thinks the transistor Muff never actually went out of production in the short time his op-amp version was made in 1978. If the transistor version continued, and it had a tone bypass switch added shortly before the op-amp version was made, that may explain these odd V3s. These may be the rarest versions of the original USA Muffs. It also means the version numbers have to be resequenced!
Howard said his op-amp schematic from 1978 already had the tone bypass switch. He does not think he made a schematic for a non tone bypass op-amp Muff, so that version may have actually come after, not before the bypass version. That seems a very odd thing to do though, considering all other transistor Muffs made from 1978 or so, until the factory closed in 1984, had the tone bypass.
Quote:I’m still digging and hoping some others will chime in with additional info.nothing to offer unfortunatly, but I am reading with intrigue.
good luck. :thumb:
Quote:Here are pix of one. V3 board, V4/V5 box and graphics, with knobs usually seen on V4(and later) Muffs, not on the V3.
Kit, is that a PNP muff? w. 2N5087s? Looks like they’re in the board the wrong way round for a regular NPN muff. That’s a pretty rare bird if it is…
Gold legs?Quote:Quote:Here are pix of one. V3 board, V4/V5 box and graphics, with knobs usually seen on V4(and later) Muffs, not on the V3.
Kit, is that a PNP muff? w. 2N5087s? Looks like they’re in the board the wrong way round for a regular NPN muff. That’s a pretty rare bird if it is…
Gold legs?I don’t know. The person who emailed those to me was trying to find out what he had, but he did not say what transistors were in it. V3s were made with both PNP and NPN tranys. I have two V2 Muffs with 2N5087 tranys facing the other way like this, so I assume that is what these are, though I have never owned a V3 with those. It’s likely they were used on V3s since they were on V2s though.
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