My bread board

[Willabe]

I also added 3 new caps to the 1P12T rotary switch that changes the coupling caps going from V1a to V1b.

I bought them from Angela Instruments ~ $14 each. Their Fender brand caps, 660v/5%;

Red; measured; 21.48nF; Kraft paper/Tin foil/Resin. (Red Astron/early tweeds) Sounded the fattest/warmest/full range break up.

Yellow; measured; 20.22nF; KP/Tin/Wax. (Yellow Astron/late tweeds/some brown face amps) Sounded not as fat but had the most 'hair' in the upper mid to treble. Pronounced picking attack, clicky sounding. 

Blue; measured; 22.22nF; Mylar/Tin/Wax (Blue Astron/BF amps) Sounded the brightest and cleanest, least amount of 'hair'.

[uki]

Man if I didn't know what it is all about, I would say you were reviving/rebuiding Frankenstein!!

This is one awesome project, I've never seen/heard anything like that before, this is really amazing !!

[Ed_Chambley]

I also added 3 new caps to the 1P12T rotary switch that changes the coupling caps going from V1a to V1b.

I bought them from Angela Instruments ~ $14 each. Their Fender brand caps, 660v/5%;

Red; measured; 21.48nF; Kraft paper/Tin foil/Resin. (Red Astron/early tweeds) Sounded the fattest/warmest/full range break up.

Yellow; measured; 20.22nF; KP/Tin/Wax. (Yellow Astron/late tweeds/some brown face amps) Sounded not as fat but had the most 'hair' in the upper mid to treble. Pronounced picking attack, clicky sounding. 

Blue; measured; 22.22nF; Mylar/Tin/Wax (Blue Astron/BF amps) Sounded the brightest and cleanest, least amount of 'hair'.

Are you liking all these?  Do you feel like the blue ones are close to the blue molded and will add to the scooped tone of a Blackface?

Are any of them similar to the 715 OD's?  Some say the 715 are a good sub for the blue molded, but I have simply used the blue molded since I have a few around.

From your findings if you were building, what caps do you find you prefer.  Like if you were going to build another 5G9?

[Willabe]

Those are all good questions, answer, I'm not sure yet. Sorry. 

I thought today that the Fender blue was a little more scooped sounding than the Fender Red and Yellow and also the other 11 caps. And I haven't found my old blue Fender caps I have a few around here somewhere.   

I think I like the Red 1 the best of the 3 new Fenders.

If I were to build another 5G9, I think I would try the Jupiter yellow, Musicap, OD 215, Fender Red and the Mallory yellow. Not in any particular order. I'm still leaning towards the Musicap.   

[Willabe]

This might help explain a little better about the differences in caps I'm hearing.

I play slide and I have ~ a dozen different slides. Glass, ceramic, steel, brass, and their different in length, diameter, weight and density. They do sound different but some sound much closer in tone to each, harder to hear a difference, but it's there.

BUT, a thin steel slide sounds way different than a thick ceramic slide to me. These 2 are the far end of the extremes for the slides I own. The glass slides sound scooped in tone compared to the steel/brass/thin or thick and the ceramic, ie, has less fundamental tone and more harmonics mixed in. The thin steel slide sounds the brightest, with the least amount of low mids and bottom end, so it's the sharpest, harshest, ie, has the most fundamental tone and the least amount of harmonics, or maybe has the most amount of hi end harmonics?????? 

I would say at this point, I think that it's easier for me to hear the difference in slides, at the 'extremes' of slides I have, then with the CC's. The slides in the 'middle of the pack' tone wise are more/much more subtle in tone difference. Same with the CC's.

Changing the 6V6 in the BB Champ from a new EH 6V6 to an NOS Phillips/JAN was clear to hear but not huge.

I know that changing the speaker would make the largest change in tone over all.

At this point I think, at least with the caps I have to test with, that although they DO make a difference, they are perhaps the least in tone change.

Maybe I'll know more when I change the 12T rotary switch from V1a position CC to V1b position CC?