Moen Holy Choir Chorus [guts shots]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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pedalgrinder
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Post by pedalgrinder »

Hi everyone here is some guts shots of the moen holy choir chorus. I know that a lot of these pedals are copys of a schematic out there that is another pedal for instance the moen unicomp is a diamond compressor the moen shaky jimi is a john hollis easyvibe so basically i would like it if anyone could verify by the guts shots what this one has been copied from. It hasn't become apparent to me. But if anyone can tell i would love to hear from you. Hope you enjoy the guts shots! :thumbsup :thumbsup :thumbsup :applause: :applause: :applause:
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Post by pedalgrinder »

and a few more
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Post by pedalgrinder »

theres and ic on this board with this written on it: 022D JRC 4031A does anyone know what the hell it is. At a punt iam assuming just an op amp but if anyone could shed some light on that it would be helpful cheers :thumbsup
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Post by pedalgrinder »

yeah good on you if a datasheet had come up in a google search i would not have posted the question there is no datasheet that i have found. Thats why i asked i don't need directions on how to use google.
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Post by roseblood11 »

jrc version of a tl022, I guess. Maybe you can see from the connections if it's a standard dual opamp?

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Post by IvIark »

I'm really impressed with that for the price. Wasn't expecting an MN3007/3101
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Post by pedalgrinder »

yeah i've had a good look at a lot of the cheap pedals and moen generally wins on build and through ease of getting apart and modding hands down every time. I like there pedals for the price and easy to mod to turn into so called boutique. they are also allready true bypass. I am not trying to put an advert up i just reckon for someone who wants to tweak an exisiting pedal for the price these are the go.
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Post by IvIark »

My Moen encounters have been positive too. I've got the MO-FM Fuzz Moo and it is a really good sounding muff, in fact one of the best sounding muffs I've played. In fact that's a good point, I could do with opening it up and seeing what's in there.
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Post by atreidesheir »

I love hearing something reasonably priced is good quality. What is the verdict on the Holy Choir. Is it worth owning?
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Post by pedalgrinder »

yeah it's not bad as is but iam going to mod the hell out of mine. First thing is to pull out those horrid jrc4558 i hate those op amps all there good for is a tube screamer. put some nice lf353's in well i like them. Taste on op amps is another whole fiasco in itself. the other thing i will do is look for any shit electrolytics and replace them if there anywhere near the signal path. other than that may play with the oscillation speed and look putting a volume control if needed. But some of that stuff will be only if i think it needs it.
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Post by guycapuano »

IvIark wrote:I'm really impressed with that for the price. Wasn't expecting an MN3007/3101
ME TOO :thumbsup

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Post by pedalgrinder »

I reckon from a fair bit of study of the board on this one that's it's pretty damn close to a boss ce-2 need follow it with a fine tooth comb to see the main difference's correct me if iam wrong but it seems that way. a change to fet op amps would give it that warmer sound that a chorus should have. why oh why would they use those shitty jrc4558's you need your head read if you use them in a chorus.
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