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11-25-2008, 08:39 AM
| | Registered User Endorsing Artist: Aguilar, D'Addario, Subdecay, Tonefactor | | Join Date: Jan 2008 Location: Brooklyn, NY | | | adding blend knob to pedals?
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is it easy to add a clean blend knob to a pedal? i have been thinking about getting a barge concepts VBjr.... BUT, how hard is it to add just a clean blend to the bypass signal? even if it is just a fixed blend using caps/resistors....
just a thought, and i don't really know **** aboutcircuit design.
john | 
11-25-2008, 08:57 AM
| | Registered User | | Join Date: Feb 2008 Location: York, UK | | There are a few freely-available blend circuit diagrams out there, so if you can (or can find someone who can/will) build one into a pedal it's feasible.
I considered adding the BBlender to a Muff a long time ago but never got around to it. | 
11-25-2008, 09:16 AM
|  | OVNIFX EXAR pedals rep for North & Central America | | Join Date: Oct 2005 Location: PDX, OR | | | It's easy to do if you have enough room inside the existing pedal housing to add the pot and the blend circuitboard and additional wires. Old-school EHX pedals have plenty of room, but most Boss/Digitech/Ibanez etc. pedals just don't have any room. | 
11-25-2008, 09:50 AM
| | Registered User | | Join Date: Aug 2006 Location: Nederland, Tx | | | and if there isn't room, you can always make a single looper with a blend control - should be an easy build, im going to try it in a week or so | 
11-25-2008, 09:24 PM
| | Registered User | | Join Date: Apr 2006 Location: Madison, WI | | | I was just about to ask the same question.
I was thinking that you just needed a single op-amp, two pots and another resistor, but all of the schematics I just found are way more complex... | 
11-25-2008, 09:27 PM
| | βΘИΞКЯŲŜĦÏИĞ ŦΘИΞ® #1 | | Join Date: Mar 2008 Location: Florida | | Quote:
Originally Posted by kevteop I considered adding the BBlender to a Muff a long time ago but never got around to it. | That thing sucks. Don't waste your time with it. | 
11-25-2008, 09:30 PM
| | Registered User | | Join Date: Aug 2006 Location: Nederland, Tx | | Quote:
Originally Posted by OptimusPrime That thing sucks. | really? what's wrong with it - i was going to build several! | 
11-25-2008, 09:38 PM
| | βΘИΞКЯŲŜĦÏИĞ ŦΘИΞ® #1 | | Join Date: Mar 2008 Location: Florida | | Quote:
Originally Posted by lotsolowend really? what's wrong with it - i was going to build several! | They just don't work for me. Built 3. All sucked. Maybe it's just me that made some stupid mistake every time. But the little bastard never worked. | 
11-25-2008, 09:53 PM
| | Registered User | | Join Date: Aug 2006 Location: Nederland, Tx | | | hmm, i've seen them recommended - did you make your own layout or copy someones? | 
11-25-2008, 09:55 PM
| | βΘИΞКЯŲŜĦÏИĞ ŦΘИΞ® #1 | | Join Date: Mar 2008 Location: Florida | | Quote:
Originally Posted by lotsolowend hmm, i've seen them recommended - did you make your own layout or copy someones? | I made that blender right there in that link. Made it like 5 times. Didn't work.  | 
11-25-2008, 10:15 PM
| | Registered User | | Join Date: Jun 2005 Location: Canberra, Australia | | Quote:
Originally Posted by OptimusPrime Maybe it's just me... |
Drag it out if you've still got it and maybe I can help restore your faith in it by helping you troubleshoot.
__________________ niftydog "My feet itch." Mike Patton | 
11-25-2008, 10:16 PM
| | βΘИΞКЯŲŜĦÏИĞ ŦΘИΞ® #1 | | Join Date: Mar 2008 Location: Florida | | Quote:
Originally Posted by niftydog
Drag it out if you've still got it and maybe I can help restore your faith in it by helping you troubleshoot. | I've still got a drawer full of parts to make a couple more. Maybe I'll get back on that after I finish pulling all the old Orange Drops out of this Hammond. I'm told I should be able to make some cash doing that. | 
11-26-2008, 08:06 AM
| | Registered User Endorsing Artist: Aguilar, D'Addario, Subdecay, Tonefactor | | Join Date: Jan 2008 Location: Brooklyn, NY | | | interesting... i think that i need to get all the sonic tools together, and then figure out any blend/bypass situation...
i wish there was a way to add a simple passive circuit... obviously then EVERY pedal would just have a super simple passive blend/bleed....
hmmm... gotta see how everything comes together, then see where i need any blending or bypassing...
john | 
11-26-2008, 08:37 AM
| | Registered User | | Join Date: Apr 2006 Location: Madison, WI | | Yeah, I thought you'd just need to base it off of a summing amp...  | 
11-26-2008, 06:34 PM
| | Registered User | | Join Date: Jun 2005 Location: Canberra, Australia | | | That's essentially what the bblender is - but the input, fx send and return are all buffered. OPb is the summing amp done a little differently to the above.
IMO you could omit OPd and the send could be taken from the output of OPa and it would affect the performance.
__________________ niftydog "My feet itch." Mike Patton | 
11-26-2008, 09:56 PM
|  | OVNIFX EXAR pedals rep for North & Central America | | Join Date: Oct 2005 Location: PDX, OR | | | wouldn't? | 
11-26-2008, 10:19 PM
| | Registered User | | Join Date: Jun 2005 Location: Canberra, Australia | | n't indeed. 
__________________ niftydog "My feet itch." Mike Patton | 
11-26-2008, 10:36 PM
|  | Registered User | | Join Date: Aug 2005 Location: Grass Valley, CA | | I own a Barge VB Jr and love it. I also built one of these blenders: http://www.moosapotamus.net/THINGS/paraloop.htm
It worked fine, but I need a phase reverse. I'm going to rebuild it with a phase reverse switch and a volume control. | 
11-26-2008, 11:33 PM
| | Registered User | | Join Date: Oct 2008 Location: Arizona | | | I was very interested in that custom pedal as well. Can you describe how it sounded without the phase reverse as you described? And are you talking about an input volume or looped volume? | | Thread Tools | Search this Thread | | | |
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