Tubes up or down?

[briane]

all these reply's focus on ease of construction.

I do not believe this is why dumble did this.

Tubes down allows the heat to vent into the chassy. When caps get hot, their response characteristics change. Most players feel like the amp 'open's up' after a half hour or so. To me this is not tubes - its the components (like film caps) heating up.

So my theory is tube down sounds better. That said I build both types of amps.

[Structo]

Mmmmm, bacon.

John

BAWAHAWAHAWA!

[Diablo1]

all these reply's focus on ease of construction.

I do not believe this is why dumble did this.

Tubes down allows the heat to vent into the chassy. When caps get hot, their response characteristics change. Most players feel like the amp 'open's up' after a half hour or so. To me this is not tubes - its the components (like film caps) heating up.

So my theory is tube down sounds better. That said I build both types of amps.

Wow, heat's good for tone...
Then put some heaters on your circuit board so the thing cooks.

[martin manning]

Maybe Fender amps needed that heat cycling to drive the moisture out of the fishpaper circuit cards...

[JazzGuitarGimp]

all these reply's focus on ease of construction.

I do not believe this is why dumble did this.

Tubes down allows the heat to vent into the chassy. When caps get hot, their response characteristics change. Most players feel like the amp 'open's up' after a half hour or so. To me this is not tubes - its the components (like film caps) heating up.

So my theory is tube down sounds better. That said I build both types of amps.

Wow, heat's good for tone...
Then put some heaters on your circuit board so the thing cooks.

Haha, I was thinking about how this could be quantified, and all of a sudden I had a vision of tiny heating pads strung together by a twisted pair, much like miniature christmas lights.... With each capacitor carefully wrapped in its own pad.

[Reeltarded]

Model that, Line 6.

[LeftyStrat]

I mentioned in another thread that I had an old Ampeg that during the second set would go 'soft'. It's almost like the longer it was on the less negative feedback it had.

Which sucked for me because at the time I liked to play on the edge, where I'd have to dig in to go over the edge. But after an hour there was no edge, just a slippery slope.

Or maybe it was the beer.

[Reeltarded]

Yeah, mush.