Maxon - DS-830 , OD-880

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

Just found these during my endless search for a OD-820 schematic :lol:
May be old news but if not...I just wanted to share .

edit: see revised schem in gorins post below

The tone controls is perhaps a bit intersting?



Another schem. I found was (the not current production) Maxon OD-880. Schematic in this blog->

Maxon OD-880 schematic
Last edited by Goop_buster on 07 Sep 2007, 22:14, edited 1 time in total.

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modman
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Post by modman »

Also found this in AG's archive:

Maxon OD-880 drawn by AG
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Post by markm »

Layout for it here;
http://aronnelson.com/gallery/album76/M ... _XX_LAYOUT

Very different sounding OD.
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gori
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Post by gori »

Hello.
Nice to meet you.
The connection diagram of DS-830 which gorin wrote on September 30, 2006 is a mistake.
I am gorin.

The connection diagram which I corrected.
Image

Inside image
Image

I may misunderstand it.

I am sorry in strange English.

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Post by Goop_buster »

Thanks a lot gori :D

I removed the schematic with errors

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Post by Nikifena »

Here are 2 pictures I made these days.
I mod this pedal to a true bypass.
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Post by tube-exorcist »

"I've noticed there's an inverse relationship between cost of gear and talent. If you need the most expensive gear to get decent tones, then you suck as a player."

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Post by Nikifena »

thanks ;)

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Post by pinkjimiphoton »

far out, this *MAY* be the same circuit as the coron d500...i will compare tomorrow!!
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Post by atreidesheir »

Jimi, what did you learn about this?
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Post by pinkjimiphoton »

i gotta find it... theres boxes of pedals around here!!
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Post by atreidesheir »

You might be a Hoarder if.... :D
Jimi I think your house would be a great place to spend a vacation. Bring a tele, an old champ, some good rocking chairs, and lots of those wonderful McDonald's gift certificates everyone receives for Christmas for us to share hot apple pies. and lots of solder
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Post by pinkjimiphoton »

well, if you're ever gonna be in connecticut, look me up, and bring a doobie!!

i have a pretty huge pedal collection, gotta thin the herd some soon!! ;)
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Post by atreidesheir »

It might pay for a vacation or too, I'll bet.
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Post by pinkjimiphoton »

i've been lucky, only maybe 10 of the 100+ i've built haven't made it to being boxed.

REAL lucky!! :scratch: :scratch: :scratch: :mrgreen:
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Post by mirosol »

Here's my (already verified) stripboard layout for DS-830. It's per Gorin's schematic.
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Post by atreidesheir »

Thanks to tagboard bloggers. :applause:
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Post by screamingdemon »

I've got a question about that opamp jrc4558D It's hard to get here in holland.Is threre an alternitive for this one.and the 2SK256Y is difficult too.Can i put here something else in with the same specs.

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Post by grrrunge »

screamingdemon wrote:I've got a question about that opamp jrc4558D It's hard to get here in holland.Is threre an alternitive for this one.and the 2SK256Y is difficult too.Can i put here something else in with the same specs.
tayda will get you 4558's for $0.16 a piece: http://www.taydaelectronics.com/catalog ... ?q=4558+op and their shipping to Europe is so cheap it's almost ridiculous.

The SK246 is a N-channel JFET, and is just used as an input buffer here, so any of the usual suspects (J201, 2N5457, 2N5458, BF245 etc.) would be a suitable replacement. Be sure to check the pinout before you solder it in though ;)
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Post by Del Pedro »

gori wrote:Hello.
Nice to meet you.
The connection diagram of DS-830 which gorin wrote on September 30, 2006 is a mistake.
I am gorin.

The connection diagram which I corrected.
[ Image ]

Inside image
[ Image ]

I may misunderstand it.

I am sorry in strange English.
There is an error in this schematic. C03 must be 3n9 instead of 39n!

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