Pearl - OC-7 ( Octaver )
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- Posts: 20
- Joined: 14 Nov 2008, 12:25
- my favorite amplifier: Ruby/Smokey/Little Gem
- Location: God's Back Garden
I was just wondering this.
Would there be any real advantage to swapping the Fet at the input of this for an opamp (I just thought it would probably be easier to source the parts if I drew up a design in DIY layout creator for this)
http://files.muziq.be/schematics/pearl_oc-07.jpg
Ta
Sam
Would there be any real advantage to swapping the Fet at the input of this for an opamp (I just thought it would probably be easier to source the parts if I drew up a design in DIY layout creator for this)
http://files.muziq.be/schematics/pearl_oc-07.jpg
Ta
Sam
- Bernardduur
- Transistor Tuner
Hmmm, dunno, but I have an original of someone has questions on this pedal
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
- puppiesonacid
- Cap Cooler
yeah, how usable is it? does it really do what its designed to do well? or is it kinda cheesey sounding? always though that having the dry signal and an octave above and below simultaneously would be interesting.Bernardduur wrote:Hmmm, dunno, but I have an original of someone has questions on this pedal
Thanks,
puppiesonacid
- Bernardduur
- Transistor Tuner
puppiesonacid wrote:yeah, how usable is it? does it really do what its designed to do well? or is it kinda cheesey sounding? always though that having the dry signal and an octave above and below simultaneously would be interesting.Bernardduur wrote:Hmmm, dunno, but I have an original of someone has questions on this pedal
Thanks,
puppiesonacid
To be quite honest, I never use it It sits in its original box doing nothing......... but the sound is kinda nice. The octaves down are great but not that really special (compared to a Boss for example). The octave up is more fuzz-ish and not that loud. There is a mod to make it a tad more louder and then it becomes more usuable......
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Information
- Posts: 20
- Joined: 14 Nov 2008, 12:25
- my favorite amplifier: Ruby/Smokey/Little Gem
- Location: God's Back Garden
there's a DIY build available already at :
http://gaussmarkov.net/wordpress/circui ... ver-clone/
But I wanted to make one that didn't use SMD components
Looking at the schem again, I'm pretty sure the FET at the input is being used as a buffer, so could probably be omitted, whether this has a noticable effect on the rest of the pedal is what I'm unsure of...
I'll keep posting as I get on with the Layout etc...
As for the loudness of the octave up, there's a trimmer pot in that section,I think tweaking that might give a louder output..
http://gaussmarkov.net/wordpress/circui ... ver-clone/
But I wanted to make one that didn't use SMD components
Looking at the schem again, I'm pretty sure the FET at the input is being used as a buffer, so could probably be omitted, whether this has a noticable effect on the rest of the pedal is what I'm unsure of...
I'll keep posting as I get on with the Layout etc...
As for the loudness of the octave up, there's a trimmer pot in that section,I think tweaking that might give a louder output..
- kierc
- Breadboard Brother
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- Posts: 124
- Joined: 24 Aug 2008, 12:43
- my favorite amplifier: Vox Cambridge 30 R Twin
- Completed builds: Clyde McCoy Wah with Whipple+Red Fasel inductor switch, Fuzz Face with own layout
- Location: Bristol, UK
- Contact:
That's so strange.. Just the other day I was really thinking out some plans to build an octave up + down with a dry signal to mix up things and see how it would sound... really want to do it now!
The sound sample he posted sounds pretty nice, but if it handled chords a little it'd be even better!
The sound sample he posted sounds pretty nice, but if it handled chords a little it'd be even better!
- Ronsonic
- Breadboard Brother
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- Posts: 148
- Joined: 07 Feb 2008, 16:56
- Location: Sunny Tampa, Florida
That input FET is indeed just a buffer. If you're going to wire it up with true bypass like a true pedal hacker you won't need it or the IC switch over on the right side of the schematic that it connects to.
Leave out R1, C1, 2, Q1 and R3 on that side and C13, R19 on the other end.
Leave out R1, C1, 2, Q1 and R3 on that side and C13, R19 on the other end.
My Pedals, Products, Services and DIY Blog: http://ronbalesfx.blogspot.com/
Information
- Posts: 20
- Joined: 14 Nov 2008, 12:25
- my favorite amplifier: Ruby/Smokey/Little Gem
- Location: God's Back Garden
Thanks for the reply ronsonic...
I've already chopped the original bypass part of the circuit out, and got the majority of the circuit drawn up in DIY layout creator,with the fet in,I've scrapped the idea of adding an addtional opamp buffer,as it'll not fit into a BB sized box,I'll probably just add an extra hole on the board and check the differences in omitting that first fet (the opamp following this should hopefully suffice...
I''ve got a few ideas to trick this box out,like splicing in tone controls for the octaves too,as the schematic shows it should be easy enough to do (something along the lines of the 'rat' tone controls,or Mark hammers Stupidly Wonderful Tone Control),and messing with the 4017 idea from the Rocktave Octave to give harmony notes...
Thanks again
I've already chopped the original bypass part of the circuit out, and got the majority of the circuit drawn up in DIY layout creator,with the fet in,I've scrapped the idea of adding an addtional opamp buffer,as it'll not fit into a BB sized box,I'll probably just add an extra hole on the board and check the differences in omitting that first fet (the opamp following this should hopefully suffice...
I''ve got a few ideas to trick this box out,like splicing in tone controls for the octaves too,as the schematic shows it should be easy enough to do (something along the lines of the 'rat' tone controls,or Mark hammers Stupidly Wonderful Tone Control),and messing with the 4017 idea from the Rocktave Octave to give harmony notes...
Thanks again