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Messages - madbean

#4246
So, you have relatively clean signal at R4, but not at pin1 of IC1, correct?

Your VR voltage seem to drop off some after the two 1M biasing resistors, R2 and R4. Both are 1M. So, couple things come to mind: 1) your DMM is acting as a voltage divider when you measure those spots making the voltage appear lower, 2) you did not use 1M for those two resistors, 3) something is wrong with the resistors, 4) the pinout of your 2SK170 is not DSG.
#4247
I don't follow. You said it's the buffered version but it is not buffered bypass? What does this mean, exactly?
#4248
I suspect the volume drop after C8 is because the Tone control is loading down the output of Q3. But, Q3 collector might be a little high. Can we get a clear pic of the top of your PCB showing the resistors, please?
#4249
Requests / Re: Korg CX3 Rotary Effect (BAJA)
May 27, 2014, 01:46:37 PM
I'm not against the idea since it is an awfully nice effect. But, I don't see it "in the cards" anytime soon due to the complexity. It would take pretty significant time to develop. But, I will keep it in mind for a future project.
#4250
Hmm, I don't have a straight answer for that.

Did you guys both build it TB or Buffered?
#4251
FYI, you can leave it off if you are sure you will never plug in the wrong power supply. The Zener prevents too much voltage from going to the charge pump and damaging it. The charge pumps all have different voltage tolerances but 12v satisfies all of them, more or less (the MAX1044 is 10v max, I think). 9.1v is also fine. I picked 12v because there might be times when one wants to turn 12v into 24v, say with an LT1054.
#4252
Quote from: PhiloB on May 27, 2014, 02:36:34 AM
Jubal, why is this not in the documentation?  I'll give it a shot.

It is in the documentation on page 3.

QuoteConnect BST Pads? The two pads labeled "BST" on the PCB must be connected according to the list above. Failure to connect the BST pads correctly will result in an audible whine in your audio path. The LT1054 is the only one that does NOT need the pads connected.
#4253
Personal preference. It's pretty busy as is with the row of knobs above it, and because of the limitation on space the Cut knob would be close to the one above it. So, I went with the plastic shaft. You can use the metal shaft in that spot, too. The mounting pads are larger but it will work.
#4254
Could you list the values used on the resistors on Q3? An incorrect value could have a big impact on output.
#4255
Quote from: peAk on May 22, 2014, 04:13:47 PM
So I am a little late to the game here.....

Did JHS used to be a member here?

Josh was actually one of my earliest customers back before JHS was a major player. This was back when I did orders via email. I didn't really get to know him, though. His emails were...laconic, let's say.

Quote
This was my problem with him. There are pictures of his early Sweet Teas that were etched boards for the Tonepad El Griton for the TS side and Brian's Krunkee (MI Audio CrunchBox) for the other side.

Yeah, that was kind of lame. But, he eventually switched to his own layouts for his products so it is all cool. Back then I was a lot more concerned about that kind of thing. Overall, I think he's come a long way from where he started although he's had a few missteps on the way.

#4256
It's the nature of the beast. Reducing C3 will brighten up the dry through signal but only so much. Beyond a certain point it will just add noise. You can also reduce C6 to 10n for a somewhat brighter delay, too. Fidelity is really not what the Cave Dweller is about, I'm sorry to say...it's meant to be a moody and simple delay.

Not that it helps now, but I am working on version 2 of the Cave Dweller which will have higher fidelity and little or no coloration of the dry through signal.
#4257
Search for Dip switches. They are very common. Generally they are on/off with little sliders in a plastic housing.
#4258
Could be the template is limited to the printable area which is going to be a bit smaller than the actual dimensions of the enclosure. I haven't seen the template so I can't really say.
#4259
Open Discussion / Re: Tonepad Pay-per-view??
May 21, 2014, 04:23:50 PM
Quote from: culturejam on May 21, 2014, 02:25:52 PM
Quote from: midwayfair on May 21, 2014, 02:17:24 PM
Anyway, the layout file is readable. It's three PT2399s with current mirrors, and a filter section to get rid of all the extra noise that adds.

That's just great. Function f(x) has something like this in the works. I wonder if we'll get blamed for "abusing" the Tonepad info?

I'm going to re-iterate this. The Function F(x) delay(s) are three PT2399 in series. One version is current mirror driven and one will be clock driven. This has been in development for about one year. So, no accusations shall be made on us since ours will undoubtedly come out after the Rebote 3!  8) 8) 8)
#4260
New season of Louie! My favorite comedian for a while. He church.