Understanding Tube Based Overdrive Pedals

[peccary]

I posted this in the Breakroom thread about building amps a little while ago, but this seems like another good place to bring it up: Frog Tube Preamp.

I haven't bought one yet, but it seems like a fun way to get in to playing with tubes. This one can use those Russian mini-tubes or 12ax7/a few others. It's a preamp but has an optional clipping stage as well.

I'll probably pick one up when I get through a few more of the PCBs I already have stacking up in the garage.

 

[zgrav]

Wow. That is a lovely pedal design.

 

[zgrav]

I posted this in the Breakroom thread about building amps a little while ago, but this seems like another good place to bring it up: Frog Tube Preamp.

I haven't bought one yet, but it seems like a fun way to get in to playing with tubes. This one can use those Russian mini-tubes or 12ax7/a few others. It's a preamp but has an optional clipping stage as well.

I'll probably pick one up when I get through a few more of the PCBs I already have stacking up in the garage.

thanks for the link to the Frogpedal pcb. Looks like a good project.
In the "here's something to tinker with" category (as opposed to a well thought out guitar pedal) I am playing around with this cheap stereo tube amp kit from ebay and it is interesting. designed for a dual pot for stereo, but you can hook pots up separately and run one channel into the other for some pretty decent distortion. the board uses a 12V AC power supply that you need to track down separately. I ordered the power supply from Amazon but also scored another from a local thrift store for a couple of dollars.

 

[knucklehead]

So . . . . a friend of mine builds well-powered tube pre's. He also drops them into a mini-switching amp so that he can get pre and power onto a pedal board.

His stuff is NOT starved plate. Sounds like heaven.

Simone

Site Builder Description

www.juleamps.com

 

[peccary]

thanks for the link to the Frogpedal pcb. Looks like a good project.
In the "here's something to tinker with" category (as opposed to a well thought out guitar pedal) I am playing around with this cheap stereo tube amp kit from ebay and it is interesting. designed for a dual pot for stereo, but you can hook pots up separately and run one channel into the other for some pretty decent distortion. the board uses a 12V AC power supply that you need to track down separately. I ordered the power supply from Amazon but also scored another from a local thrift store for a couple of dollars.

That's pretty cool, and for $11 you can't really go wrong.

 

[fig]

Did @jubal81 build it? I seem to recall a reference to that literary term.

Beautiful!

 

[Chuck D. Bones]

He did indeed.

 

[Feral Feline]

Great name for a pedal, MacGuffin, I like the dual Mini-Tube idea. That is one super-coolio lookin' pedal!

Someone on another forum used the same name for a Klon/Bluesbreaker combo pedal, looked good as well.


I've got a Tube-Pre PCB (2, actually, one is for power), based on a channel of the Triple Rectifier, as near as I can determine. Need to get all the bits together such as tube sockets etc.

Why is there always so much to do and so much to get...?

 

[knucklehead]

Why is there always so much to do and so much to get...?

Right?!?

 

[jubal81]

Thanks, guys. The circuit design is cobbled together from other projects, so I don't take credit for that. The MacGuffin is just the Dumble schematic with a 555-based SMPS and Mosfet Buffer. Attaching the schematic if anyones interested.

 

[Feral Feline]

Cheers!

Thanks for posting the schematic — MacGuffin joins the queue!