All right, I think I'm done!
I'm putting a Champ SE on the bread board (BB) 1st. And then I'll use that to try some true pitch shift vibratos (TPSV) .
Even though this is a BB, I wanted to change the K bypass cap and the plate coupling cap (CC)
very fast to really hear the difference in real time and not from my ear's memory. I want to take out any second guessing.
To me this was
very important especially for the CC's. I bought several different brands to see IF/how much different they might sound.
So, for the 1st preamp gain stage, I made up a couple of brackets from some parts I had laying around to mount a couple of rotary switches. They both are movable so I can use them on other gain stages too. I did test and mark the outside foil on the CC's. (They don't look real pretty but they work fine.)
For the K bypass caps I used a 2P6T rotary set up like this;
Position's;
1. Open/No bypass cap.
2. 0.68uF.
3. 2.2uF.
4. 4.7uF.
5. 10uF.
6. 26uF.
For the plate CC I used a 1P8T rotary (I had this here, bought it from Weber years ago,
BIG honkin rotary
) I measured each cap for capacitance
and I went through the Mallory 150's I had on hand and found a yellow (old) and white (new) that were both 22.02nF. All the other cap brands I had at lest 2 each and measured for the closest to 22.00nF. Rotary switch set up like this;
Position's;
1. Mallory 150/white/630v/22.02nF.
2. Mallory 150/yellow/630v/22.02nF.
3. Jupiter/yellow/600v/20.39nF.
4. Jupiter/red/600v/19.28nF.
5. SoZo/blue/400v/22.02nF.
6. Musicap/600v/23.00nF.
7. AuriCap XO/600v/20.78
8. Mojo Mustard/630v/22.05nF.
I didn't have room for the OD 225 and 715. I also don't have a SoZo mustard, I'll test those later.
Here's a few pics;
Now back to my CUBS playoff game against the St. Lou. red birds.
