eddiekatcher
Joined: Mar 14, 2006
Posts: 2778
Atlanta, GA
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Posted on Feb 18 2015 10:18 PM
The resistors in the power supply can must have changed a good bit as well looking at the voltage on the first half of that 12AX7
I think part of that may have been done to add some additional gain in the first stage. Supposedly higher voltages make for better gain and headroom to a point.
Ever run into those tapped pots outside of a Fender? I can't recall that I have.
But then I've led a sheltered amp life. Mostly Fenders, two damn Ampeq's and some other minor players.
I have a '61 Epiphone Rivoli "Bass" amp with a built-in optical compressor that I intend to make that my "what the hell is THAT?" amp. It is really clean and a D-130 might just liven it up. Really a cool little amp, open back even.
The next project for the bench is a 1484 Silvertone with a shorted power transformer. Lucky for me, I have a spare parts amp.
Stay warm Badge.......... Heck, we need to stay warm down here too.
ed
— Traditional........speak softly and play through a big blonde amp. Did I mention that I still like big blonde amps?
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Badger
Joined: Nov 16, 2013
Posts: 4537
Wisconsin
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Posted on Feb 19 2015 06:05 AM
eddiekatcher wrote:
Ever run into those tapped pots outside of a Fender? I can't recall that I have.
Never, but I'm also pretty sheltered. I wonder sometimes if it was simply a technical solution to having to use a particular pot value of the day to get close to the design value. Most of the schematics I see, their use goes away after the blonde era.
Stay warm Badge.......... Heck, we need to stay warm down here too.
Sure thing. 
— Wes
SoCal ex-pat with a snow shovel
DISCLAIMER: The above is opinion/suggestion only & should not be used for mission planning/navigation, tweaking of instruments, beverage selection, or wardrobe choices.
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eddiekatcher
Joined: Mar 14, 2006
Posts: 2778
Atlanta, GA
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Posted on Feb 19 2015 10:02 AM
Badge...........-26? Go get on a plane and get your butt down here.....!!!
I guarantee the Karvana Surf Stomp this weekend will warm your soul.
I even have a spare ticket to the Super Cross....
There is still time.
ed
— Traditional........speak softly and play through a big blonde amp. Did I mention that I still like big blonde amps?
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Badger
Joined: Nov 16, 2013
Posts: 4537
Wisconsin
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Posted on Feb 19 2015 10:32 AM
eddiekatcher wrote:
Badge...........-26? Go get on a plane and get your butt down here.....!!!
I guarantee the Karvana Surf Stomp this weekend will warm your soul.
I even have a spare ticket to the Super Cross....
There is still time.
ed
Thanks Ed, I truly appreciate the thought. I'm kind of in a partial care-giver role & have a couple things called responsibilities, having given my word some decades ago. If I can sometime motivate the "kids" to pick up some of the load the truck would stay and me & the 38mpg Mazda would be headed down the road.
Segue-ing back to gear; sorry for the hijack but couldn't resist when I saw the wx greeting me this morning.
— Wes
SoCal ex-pat with a snow shovel
DISCLAIMER: The above is opinion/suggestion only & should not be used for mission planning/navigation, tweaking of instruments, beverage selection, or wardrobe choices.
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