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May 22, 2015, 04:33:53 AM
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: stupid.the.cat
DIYstompboxes.com  |  DIY Stompboxes  |  Building your own stompbox  |  Adding a dry mix to pedals? 0 and 1 Guest are viewing this topic. « previous next »
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: Adding a dry mix to pedals?  ( 1632 )
: 59

Dain A.

Adding a dry mix to pedals?
« : April 11, 2012, 03:09:33 PM »

I recently acquired a MXR Micro Chorus reissue, and Im liking it. Only problem that Im having is that it really steals my bass's (yeah I play bass) low end response and attack. Anybody ever tried sticking a little dry blend in this bad boy? I know its all SMD so modding it in any other way in almost out of the question for me. (though I have successfully modded some SMD pedals before) I know that I like the dry blend because I built up a little buff 'n blend a while ago, but the limited space on my overly packed board kicked it off. I don't want to drill any new holes in the enclosure, so I was thinking a trimpot would do. I guess Im asking because Im not sure if I would have problems with feedback or messing with the resonance. Any suggestions?
: 151

Re: Adding a dry mix to pedals?
« #1 : April 11, 2012, 04:43:44 PM »

Rather than modifying it, you can make a standalone blender. Barry at GuitarPCB has a project.
: 59

Dain A.

Re: Adding a dry mix to pedals?
« #2 : April 11, 2012, 05:08:50 PM »

Yeah, (as mentioned above) I already made something like that, so I know that I like how it sounds. I just don't have the room on my board for another pedal.
: 10417


Re: Adding a dry mix to pedals?
« #3 : April 12, 2012, 03:37:27 AM »

ive done an utterly simple blend pot thing by splitting the input

dry pot 1/ effect pot 3 ...out on 2...adjust to taste...can be set with a trimmer if you dont want another pot/hole.....simple but it works....just my 2p  :)

theres probably a much better way, buffered etc...but hey i said it was simple... ;)





: 1306

Merlin, Lancashire UK

Re: Adding a dry mix to pedals?
« #4 : April 12, 2012, 04:00:32 AM »

Going by this schematic:

Replace R16 with a pot and resistor (just to get the total value to match the original 270k resistor):

: 2250


Re: Adding a dry mix to pedals?
« #5 : April 12, 2012, 04:17:15 AM »

I was checking to see how the bass frequency response or the capacitor values there is and noticed that its got a nice setup of pre and de-emphasis, R10 and C7 set a 6dB boost above 5khz, R11 and C8 cut those frequencies back at the end. The decoupling capacitor C10 and C12 with surrounding resistor both have cutoff frequencies below audio.
: 59

Dain A.

Re: Adding a dry mix to pedals?
« #6 : April 12, 2012, 02:26:46 PM »

Thanks for the replies! Merlin, I thought about something like that, but the one I have is the reissue with SMD so no modding except for through-hole stuff. Correct me if Im wrong, but isn't the way that you posted acting more like a traditional mix? Im just looking for some dry getting jammed into the output. I think the easiest and most hassle free route for me would probably be to go with deadastronaut's (Rob, right?) way. Probably do the mod soon, I'll keep ya'll updated. Thanks!

Edit: stupid idiot typo.
« : April 12, 2012, 02:28:30 PM The_Armadillo »
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