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Topics - azrael

#1
Tech Help - Projects Page / Anamorph issues
May 21, 2025, 06:33:35 PM
I will get voltages later tonight, I don't remember anything being weird about them when I was first building it, but it would be good to get a second set of eyes on this.

the pedal is delaying. It's doing things, so that's cool.
However, it doesn't oscillate. And the clock frequency doesn't go higher than 9.5khz.

I've tried an NE570, and an v571d, and different MN3005s and different CD4047s.

Hoping the symptoms are something someone has seen before. thanks!
#2
Tech Help - Projects Page / Ballast Junior
July 24, 2024, 06:20:34 PM
I have a Ballast Junior here where sometimes there is no chorus effect occurring.
Now, I think this is related to the "lockup" issue of the PT2399. When I power it with a bench power supply, i noticed that it is drawing an unusual amount of current. around 135-140. But when I probe with a multimeter Pin 2 to see what's happening, the current draw drops and the effect begins working again. And the voltage at Pin 2 looks normal after this (around 2.5V)

Currently toying with the "anti-lockup" circuit (Q2 and its neighbors) but nothing yet. I tried the older value of 47 ohms for R24 just to see, with no luck.

One difference is that I have TL072s in both positions, as I didn't have a TL022. Will be trying a TL062 for IC3 tomorrow.

Should I also try swapping PT2399s? Any other fix ideas?
#3
This is an issue madbean documents in the build doc, but I'm having trouble beating it.
At higher gain or bass settings the motorboating goes nuts. Lower gain settings seem fine. It works up to like 75-80% of the gain knob.

I tried toying with some cap values, increasing the decoupling on Vb to 220uF. No luck. Any tips?
#4
Audio/Video Demos / Low Rider naster octave up
April 01, 2013, 04:18:55 PM
I removed C12 and reduced C10 to 470p.
[soundcloud]https://soundcloud.com/secretrogue/return-of-the-pearl-octaver[/soundcloud]
Description from soundcloud:
"Tweaked my Pearl Octaver clone, very satisfied with it now, gonna be back on the board, no need to buy an Octron.
Forgive the hum, I was using my Strat on the middle position, and I'm plugged in the high gain input of my VTM. With the coil tap on, it's the beefiest position on it, but it's got a bit of noise.

Here are my settings:
normal signal: 25%
octave up: 100%
octave down: 50%
two octaves down 25%

recorded on my iPhone."
#5
General Questions / Weener Wah
February 14, 2012, 10:39:47 PM
Hey madbean, I was making my own wah layout, using your library in eagle. I was curious about how you did your Inductor part. The pad spacing is different than your library. I can't use the default pad size without some overlap. I'm okay with that for my single sided etches.
But I was wondering, should I space my pads like yours? Does it allow both Whipples and Dunlop Fasel inductors to be used?
#6
Requests / King of Klones - Single Sided Layout?
January 22, 2012, 02:29:29 AM
Not asking for someone to make one, just wondering if there was an etchable single sided layout ever available? If not, I'll probably just make one myself. Just thought I'd ask before I spent the time. :D