12 series clip

rockstah · Post by **rockstah** » Sat Nov 18, 2006 7:13 pm

oh yeah

mightymike · Post by **mightymike** » Sat Nov 18, 2006 9:38 pm

I'm putting in a 73k, and 106k for V3.

SHould I get that 106 to drift higher?

I used my Soldering Iron to turn my 820s in to 950, and 1050s.

I'm almost done with the 10000.

And I bought a Variac.

rockstah · Post by **rockstah** » Sat Nov 18, 2006 10:03 pm

rockstah wrote:
5150loveeddie wrote:Got ya....6.1......that's easy

Signature? all the links? sorry i don't get it....Notice my sign!!?
oh i was just pointing to thats where my latest clip will be.

yeah when i turn on the amp it at 120v my heaters were at 6.55 in standby mode. (500dcv tap bias at 30mA or 60 percent MPD)

fliping the amp into play position my heaters dropped to around 6.47 and then i dialed down from there to around 6.1 at 110v on the variac.

ill try to get some clips up by tonight.

rockstah · Post by **rockstah** » Sat Nov 18, 2006 10:03 pm

rockstah wrote:120 110 100 120 90

im on the 500v tap biased at 30mA to begin with.

yeah the volume changes it was all in one take.

you will hear four different times i turn down the variac.
first is120v
second 110v
third 100v 4th120v
last pass 90v (my heaters at 90v are at 4.7vac )
http://www.soundclick.com/bands/songInf ... ID=4680578

my attention span... maybe ill do another one where i play all the same riffs on all voltages.

rockstah · Post by **rockstah** » Sat Nov 18, 2006 10:04 pm

rockstah wrote:
5150loveeddie wrote:Way cool what you did, very interesting.......120 is harsher, 110 /100, smoother on top, 90 was not also, hummmmmmm
very interesting indeed.
- messins around over here.
its at a 110 - 100 i think i like it the best, atleast on that clip.
90 gets kind of mushy but again i havent even touched the bias at this point. i havent measured the bias yet but i know my bias went from 30ma down to 20 at 110v let along 90v!.

good idea biased at 30mA-- at 108-109 the b+ is 460.

120 is 512 B+
110 is 470 b+
100 = 440 b+
90 is 400dcv. - right on George!

45auto · Post by **45auto** » Sat Nov 18, 2006 10:11 pm

dude you are the stairway to heaven per the vh formula amp kudos!

npminard · Post by **npminard** » Sat Nov 18, 2006 10:31 pm

Thanks for the info on your setup, rockstah, the info is appreciated

5150loveeddie · Post by **5150loveeddie** » Sat Nov 18, 2006 11:22 pm

mightymike wrote:I'm putting in a 73k, and 106k for V3.

SHould I get that 106 to drift higher?

I used my Soldering Iron to turn my 820s in to 950, and 1050s.

I'm almost done with the 10000.

And I bought a Variac.

Mike go slow on that, I've pushed it a lot once (had 70k/115k) and I got real mushy......use a pot for trimming

rockstah · Post by **rockstah** » Sun Nov 19, 2006 1:48 am

500dcv tap
variac'd down to 109dcv= http://www.soundclick.com/bands/songInf ... ID=4681772
b+ 460
heaters at 6.2
bias drops from 30mA to 25mA

its here im thinking perhaps'back to split cathode.

JimiJames · Post by **JimiJames** » Sun Nov 19, 2006 2:18 am

berry nice... you lika da juice ...? the juice is a goood !

JJ

rockstah · Post by **rockstah** » Sun Nov 19, 2006 2:24 am

JimiJames wrote:berry nice... you lika da juice ...? the juice is a goood !

JJ

BrownSound1 · Post by **BrownSound1** » Sun Nov 19, 2006 3:29 am

rockstah wrote: its here im thinking perhaps'back to split cathode.

Make up your mind bro.

5150loveeddie · Post by **5150loveeddie** » Sun Nov 19, 2006 10:10 am

Hot for teacher, we want, Hot for teachers riff

Man they all sound good.......Decisions decisions decisions........

What tubes in there again RFTs??

rockstah · Post by **rockstah** » Sun Nov 19, 2006 11:48 am

5150loveeddie wrote:Hot for teacher, we want, Hot for teachers riff

Man they all sound good.......Decisions decisions decisions........

What tubes in there again RFTs??

RFT's in there - decisions decisions.

Tone Slinger · Post by **Tone Slinger** » Sun Nov 19, 2006 7:40 pm

Shit, from being "Right There" at that brown sound (really close) maybe some OT experimentation would help. Eddie's OT was obviously not a MM. Have you tried the Dagnall clone.