Copper sound Diode sub box experiment

steviejr92

steviejr92

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Just thought I’d showcase an experiment I did. Just found out I have a new love for BAV21s in the dist+. I wish I had proper recording equipment cause the video really doesn’t do it justice. You really can hear the differences in each set and it’s pretty cool to be able hear them on the fly. This is all thanks to @fig for basically getting me this box! Thanks as always! Anyways here’s the experiment!
Who also knew 1n5817s would sound good as clipping diodes!
 
fig said:
That's pretty cool...I got the transistor audition box. I already have some mods in mind before using it :ROFLMAO:
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Its a handy tool! 1 thing though arent 2n7000s transistors :unsure: theres an option here that is marked 2n7000.....
 
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A MOSFET, but yes. Bi-polars as well...as they are made up of diodes.

You'll see some folks use out of spec Ge transistors as well...leaky too!
 
fig said:
A MOSFET, but yes. Bi-polars as well...as they are made up of diodes.
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You learn something new everyday on here! Awesome thats pretty interesting so if set up right i can use mosfets as the clipping component instead of diodes.....yes please......
 
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Well this just opened my mind up just a little more...hmmmmm well looks like im gonna be breadboarding today :ROFLMAO:
 
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Tying two of the pins together as shown on the AMZ site, you can see how the mosfet acts as diodes.
IMG_9662.jpg

Same with plain old BJTs, this is two 2n3904s with the base and collectors anti-parallel

IMG_9668.jpg
 
swyse said:
Tying two of the pins together as shown on the AMZ site, you can see how the mosfet acts as diodes.
IMG_9662.jpg

Same with plain old BJTs, this is two 2n3904s with the base and collectors anti-parallel

IMG_9668.jpg
Click to expand...
Im going to try the mosfet zener diode hybrid clipping combination and see what that might sound like in a dist+
 
steviejr92 said:
Im going to try the mosfet zener diode hybrid clipping combination and see what that might sound like in a dist+
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I've never tried anything with zeners for clipping, I'd be interested to know. I would think with the higher forward voltage you're going to be getting more of an overdrive.
 
swyse said:
I've never tried anything with zeners for clipping, I'd be interested to know. I would think with the higher forward voltage you're going to be getting more of an overdrive.
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Well im gonna find out if i get this right i will make a quick vid of it and post it here!
 
swyse said:
I've never tried anything with zeners for clipping, I'd be interested to know. I would think with the higher forward voltage you're going to be getting more of an overdrive.
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so here it is I used a 1n5237b as the zener it’s 8.2v zener as that was the closest I had to a 3v zener. Then I used a 2n7000 mosfet. Zener goes to ground then to the gate of the mosfet. I then jumpered the emitter to the gate and then the emitter to the drain. From there I just applied it to the already existing dist + I already had breadboarded in the previous video.

It’s crazy loud! And sounds more like a boost but there’s a subtle growl in the bottom end. I kind of really like it haha

 
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steviejr92 said:
Well im gonna find out if i get this right i will make a quick vid of it and post it here!
Click to expand...

If you're using zeners for clipping diodes you probably want to put them in series opposing each other, rather than the usual parallel arrangement.

Zeners will clip at their listed voltage when reverse biased. When forward biased they'll clip around 0.6V, similar to any other silicon diode.


Arranged like this the pair will clip in both directions at the zener + forward voltage. (For example, a 3.3V zener will clip around 3.3V + 0.6V)
1668273926821.png



Arranged in the normal parallel configuration the pair will clip at around 0.6V in both directions, regardless of their zener voltage.

Neither can reach their zener voltage because the opposite zener will begin to clip at it's forward voltage threshold.

1668273905060.png
 
Robert said:
If you're using zeners for clipping diodes you probably want to put them in series opposing each other, rather than the usual parallel arrangement.

Zeners will clip at their listed voltage when reverse biased. When forward biased they'll clip around 0.6V, similar to any other silicon diode.


Arranged like this the pair will clip in both directions at the zener + forward voltage. (For example, a 3.3V zener will clip around 3.3V + 0.6V)
View attachment 35901



Arranged in the normal parallel configuration the pair will clip at around 0.6V in both directions, regardless of their zener voltage.

Neither can reach their zener voltage because the opposite zener will begin to clip at it's forward voltage threshold.

View attachment 35900
Click to expand...
Well now I’m gonna give this a try! And post what it sounds like!
 
Ok video finally uploaded here you can hear the sputter…

Oh and btw there’s a significant volume decrease whe using this configuration
 
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