Aion Aperture (Ampeg Scrambler)

[Big Monk]

Do you think 10% would account for the issue?

I'm not sure. Frankly, this is a good excuse to really familiarize myself with this circuit on the breadboard. Then maybe my redo can be on a board of my own layout so I can have the Octave trim external.

I'll play around with it. If a few collector resistor swaps can't correct it. I'll scrap this for now and build it on the breadboard and see if i can replicate the issue.

 

[fig]

I'm not sure. Frankly, this is a good excuse to really familiarize myself with this circuit on the breadboard. Then maybe my redo can be on a board of my own layout so I can have the Octave trim external.

I'll play around with it. If a few collector resistor swaps can't correct it. I'll scrap this for now and build it on the breadboard and see if i can replicate the issue.

When it's the DJs party, he calls the tune.

 

[fig]

What will blow my mind is after 6 pages, two builds and breadboarding...Derek finally get it working only to realize it's not really his thing.

But he can say it with true conviction!

 

[Paradox916]

I’m telling ya, eggs make me fart out too.... especially if they are scrambled.....
Maybe I’m a modded Valve Jr

 

[Big Monk]

Update!

@fig asked:

Do you think 10% would account for the issue?

Turns out it did! Dropping R6 from 4.7k to 2k bumped the voltage on Q2c up to 4.6 vDC which also fixed the voltage on Q4c.

That fixed it but now I need to swap the texture pot out as it is exhibiting weird behavior (like an on/off switch at end of travel). It was a pull from another build and I have a spare so no big deal.

What I heard I loved though.

 

[fig]

Update!

@fig asked:



Turns out it did! Dropping R6 from 4.7k to 2k bumped the voltage on Q2c up to 4.6 vDC which also fixed the voltage on Q4c.

That fixed it but now I need to swap the texture pot out as it is exhibiting weird behavior (like an on/off switch at end of travel). It was a pull from another build and I have a spare so no big deal.

What I heard I loved though.

If I may, why did you choose 2k, or did you try 3.9k, 3.3k first?

 

[Big Monk]

If I may, why did you choose 2k, or did you try 3.9k, 3.3k first?

Just my gut from doing collector voltage adjustments on other fuzzes. 1 vDC is a decent swing so I just took a shot on 2k.

 

[Big Monk]

Got to Texture pot replaced. Just going to clean some stuff up tomorrow and re-assemble.

 

[fig]

Check me on this; with a 9v supply and 2kΩ resistance, wouldn't the current be 4.5mA?

 

[Big Monk]

Check me on this; with a 9v supply and 2kΩ resistance, wouldn't the current be 4.5mA?

Yes.

I (A) = V/R = 9/2000 = 0.0045 A = 4.5 mA

 

[Barry]

I’m telling ya, eggs make me fart out too.... especially if they are scrambled.....
Maybe I’m a modded Valve Jr

Boiled are the worst for me!

 

[Big Monk]

I’d like to work on this on the breadboard and have a go at my own board for this. I really like the tone but would like to fine tune the gating and noise.

 

[Big Monk]

Look at that flex, kicking off the slippers to reveal the white socks. Next he's gonna come out like Captain Underpants

You have to give the people what they want or they’ll turn on you.

 

[fig]

I’d like to work on this on the breadboard and have a go at my own board for this. I really like the tone but would like to fine tune the gating and noise.

To be fair you have wired it nearly to death, so some noise is almost inevitable. I thought it sounded really good, but I was really focused on the striptease, so there's that. Hot stuff Derek!