Buddy's Breadboard and Circuit Design Notes

[Chuck D. Bones]

The only thing that should change when you remove C4 is you have one less part.

Referring to sch in post #312, if GAIN doesn't go low enough, try increasing R2. If GAIN doesn't go high enough, try increasing the GAIN pot.

 

[Chuck D. Bones]

I was wondering about the choice of inverting 1st stage, wouldn't non-inverting be somewhat less noisy?

Why would that be? I don't believe there would be any difference in noise performance.

 

[BuddytheReow]

Alright. Here's v4 with your suggestions, Chuck. I did have a good 25 min after dinner to play around with it and I do like the 1st gain stage structure now. It's also still interactive with my guitar. Dial both knobs back and it's pretty much a dirty boost. Then it goes into OD territory, then fuzz.

As mentioned in a previous post, the tone block makes this circuit a bit on the darker side when compared to the ice pick BMP when dimed. When dimed in my circuit it ends up being just right for my taste. I'll try to see if I can get a quick demo tomorrow via my phone.

I do like this one. Oh, and removing C4 in the previous schematic didn't change a thing. Just one less part. You think we can call it? I'll still use it in my practice session tomorrow to confirm with my own ears.

 

[Chuck D. Bones]

Tell us again, where is pin 3 of the TONE pot?

 

[Feral Feline]

It's hiding behind a veil of VREF.


Ignore me, haven't slept for nearly 2 days...

 

[Chuck D. Bones]

 

[Feral Feline]

... The TONE knob pinout top/bottom is 1,2,3. Horizontal pots are left/right 1,2,3.
...

 

[Chuck D. Bones]

I want to make sure Sandy didn't change the order since Tuesday. If pin 3 is indeed still on the bottom, then the TONE pot is wired backwards. When Sandy says "When dimed in my circuit it ends up being just right for my taste." It tells me that some filtering of the distortion stage is in order.
What do you think?

 

[BuddytheReow]

Oops. No. Pin 3 of the TONE pot is on the top in my schematic

 

[Chuck D. Bones]

You're saying that turned up to 10 is the brightest setting and below that is too dark?

 

[BuddytheReow]

No, I'm saying that turned up to 10 is the brightest setting and a bit too dark CCW past, say, 9 o'clock. Around noon and it sounds like my neck pickup

 

[Chuck D. Bones]

Then the range on the TONE knob is about right? It doesn't need to go brighter or darker?

 

[BuddytheReow]

I would say so, yes. I mean, could I make fully CW brighter? Yes, but then it becomes too piercing. Super dark settings might be useful to some people.

 

[BuddytheReow]

Here's a relatively quick demo of the Nebula Drive. Forgive the shoddy iphone work.