Chuck D. Bones
Circuit Wizard
Thanks to Jubal81 for designing and providing the face plate and board. Thanks to HamishR for planting the initial idea and nudging me in the right direction sonically.
The Mojito Deluxe
- Thread starter Chuck D. Bones
- Start date
dlazzarini
Well-known member
Nice looking pedal. I like the use of 2 different knob styles
Chuck D. Bones
Circuit Wizard
Thanks. I might have used mini-chicken heads for BASS, TREBLE & BOOST, but I can't find any in clear.
I like to think the clear knobs symbolize the club soda and ice while the green knobs are the lime and mint. Damn, now I'm getting thirsty!
jubal81
Well-known member
I gotta say, when it comes to low- to mid-gain OD, this thing is a good as I've ever tried.
It's received the "I've been playing my open-G tele and have no clue what time it is" award.
Only variation on mine was using 2n5457 JFETs for the clip diodes, as suggested by Chuck in his original post.
It's received the "I've been playing my open-G tele and have no clue what time it is" award.
Only variation on mine was using 2n5457 JFETs for the clip diodes, as suggested by Chuck in his original post.
Chuck D. Bones
Circuit Wizard
You could try adding it to the Wish List.
I was doing the exact same thing today!
Barry
Well-known member
Done
"Only variation on mine was using 2n5457 JFETs for the clip diodes, as suggested by Chuck in his original post."
Jubal81 I suspect it will sound identical. Bjorn seems to use these two Jfets almost interchangeably. I love this pedal and mainly use it with boost off. It's become my main OD for a Gibson - it's incredible.
Jubal81 I suspect it will sound identical. Bjorn seems to use these two Jfets almost interchangeably. I love this pedal and mainly use it with boost off. It's become my main OD for a Gibson - it's incredible.
Chuck D. Bones
Circuit Wizard
Here's another one I just built for a friend of mine. I love the tones coming out of this thing! Box is bare aluminum. I jitterbugged the outside with 220 grit. This time I installed a CA3130EZ manufactured in this century.
I built this pedal a few months ago and really like its versatility. One question -- when the pedal is powered up for the first time in a day I will usually get a vey low level high pitched tone. Everything earlier in the chain is bypassed and the tone goes away if the Mojito is bypassed. But I can also switch the bypass in and out a few times on the Mojito and the tone will also go away when the Mojito is not bypassed. It gently fades away.
I have not tried swapping out the transistors in the pedal to see if a different part would eliminate the issue since it is a minor issue that usually resolves itself after a few minutes. But I wanted to ask whether a probable cause and quick fix comes to mind.
I have not tried swapping out the transistors in the pedal to see if a different part would eliminate the issue since it is a minor issue that usually resolves itself after a few minutes. But I wanted to ask whether a probable cause and quick fix comes to mind.
Chuck D. Bones
Circuit Wizard
I have two of these, one built on Vero and one on a PCB and neither one does that. First thing I'd suspect is the power supply.
Chuck D. Bones
Circuit Wizard
It's an easy test and will tell us if we're on the right track or not.
Can we see some pix of your build?
Can we see some pix of your build?
Switching power supplies and removing some pedals out of the chain removed any high tones from this pedal. Switching the power supply back with the reduced number of pedals also left the pedal absolutely clean. This is the Mojito, renamed the "Honey Beer" (wheat / lager / stout / malt / hops for the pots). The design is a full-top print on matte photo paper covered with wide packing tape. --
Chuck D. Bones
Circuit Wizard
Nice work! I guess we know how you celebrated your victory over the squeal. 
Vero and/or outboard pot wiring can make some circuits prone to oscillation. The Mojito has a high input impedance, so it should not upset anything upstream. The output is pretty low impedance, so unless the volume is dimed it should not have a problems driving any pedal.
Vero and/or outboard pot wiring can make some circuits prone to oscillation. The Mojito has a high input impedance, so it should not upset anything upstream. The output is pretty low impedance, so unless the volume is dimed it should not have a problems driving any pedal.
Chuck D. Bones
Circuit Wizard
Too much current or too much capacitance load can upset a power supply. Which power supply are you using?
