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devnulljpParticipant
Buy a NTC RI on ebay for $50 and gut it? Re-sell the guts on ebay for $25…?
Or keep your eyes open for an old Frequency Analyzer / Black Finger / Bad Stone and gut the box (which would be a shame to do though unless the innards were damaged).
How about just sticking it in a Hammond box?devnulljpParticipantWhile I don’t know for sure, This might help:
devnulljpParticipantQuote:In the cases of the Worm and Muffs, the XO pedals are improvements over the big counterparts.Wait….this
is an improvement over this
or this
or this
???
devnulljpParticipantAir Canada staff jimmied the lock on my guitar case and probably had a go, cracking the top in the process.
Can I say BASTARDS! here?devnulljpParticipantI think the pot values for a BMP are: Volume, 100k; Tone, 10k, Sustain, 10k. All linear
Anyone care to verify/refute/provide more detail?
So, I’d try a couple of 10k trimmers and see how you go.
In the above pic, both pads are jumpered with 10k resistors, so you could just try different resistor values too in that range.
What are you trying to do? Less treble / less sustain?
There’s good info on Big Muff mods here: “http://rkerkhof.ruhosting.nl/Taas/Mods/Big Muff.htm”
(you’ll have to cut n paste that URL, this board doesn’t handle spaces very well)devnulljpParticipantNot a whole pot, just a little trimpot. or you could just experiment with different resistor values to mimic the pot at different settings, but a trimpot will let you solder once and then fiddle with it til you get it sounding the way you want it.
Here’s a pic of a trimpot I put in my 3034 BMP as a noise gate (you’re supposed to remove that white thing once it’s set) so you can see what I’m talking about.
[IMG]”http://i440.photobucket.com/albums/qq123/devnulljp/Fuzz/Big Muffs/bigmuff-3034_0003.jpg”[/IMG]
The LBM has pads for volume, tone and sustain, because it’s a BMP EH1322 board.
You can kinda see them across the bottom of the this out of focus pic:[IMG]”http://i440.photobucket.com/albums/qq123/devnulljp/Fuzz/Little Big Muff/dsc_0029.jpg”[/IMG]
You can see the resistors soldered across them.
…or pop it out into a NYC RI box and you have an IC Big Muff pi.devnulljpParticipantQuote:Also, I remember some op-amps had been changed by the previous owner (4558’s instead TL072’s if I’m not mistaken – we didn’t took notes when it was being revised, oops).Thanks for the info. Stock op-amp is JRC4558D. It’s pretty grungy, so common to change out at least the U1 op-amp with a TL072. I think that’s analogman’s hi-fi mod.
I’d like some pics of the switch wiring and where does the spliced LED wire go on the board? Anyone have pics to post?
devnulljpParticipantOr you can mod it — that board is a 1322 board from a regular full size big muff but with resistors across the pads for the sustain and tone pots. Throw a trimmer on each them you can set the sustain and tone the way you like em and it’ll sound just like a 1322 IC Big Muff. Although I think it’s set for max sustain, as though the pot was turned hard clockwise. The stock tone settings are pretty bad though. icepick or blanket take your pick.
devnulljpParticipantI’d still like details of those mods.
I just got a Made in Taiwan (90s?) reissue. Sunds pretty good, but I’d like to TB and have the LED as an effect indicator (did the same mod on my QTron a while back).This is mine, not as clean as yours:
devnulljpParticipantQuote:Thanks , I researched it today , I should know since I bought it new back in the 70’s. It’s a triangle ,the pots say 1966, I considered trading it for a boss rc 20 xl looper from a friend…..is that a good trade? thank youdevnulljpParticipantQuote:Just got aboard ,and pulled out my gold colored Big Muff(triangle I think because the volume sustain and tone knobs form a triangle)The pots would indicate 1966, I know thats wrong, what year do you think it is?Gold? You sure it’s not a Sovtek/Civil War/Green (that’s faded)? Could you post pics please? What are the pot codes?
Triangle Big Muff looks like this:
If you have one that’s gold, that’d be pretty interesting.
devnulljpParticipantOne went for $57 a few weeks ago on ebay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140323064230
devnulljpParticipantSaw this guy on TV somewhere when I was 8.
…later I figured if this drunken stoner could do it, so could I
Very pleased to say my 3-year-old now asks to listen to Muddy Waters and the Rolling Stones instead of all that other tosh toddlers usually get to listen to.
devnulljpParticipantI’d like some info on what you actually do to calibrate the trimmers.
Other than hooking it up to an oscilloscope…then what? What do you look for? How do you know it’s right vs.wrong?
Anyone tried any of the software oscilloscopes like xoscope for this?devnulljpParticipantDepends what you want.
Original Clone Theory
Boss CE2
RetroSonic ChorusNot really chorus, but related:
Boss DC2
Fromel Lush/Seraph…have you tried the Small Clone though? That thing is really versatile.
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