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Base theme by DesignModo & ported to Powered by Vanilla by Chris Ireland, modified by the "theFB" team.
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Just tryin' to help
But even that can't explain how a TSL can sound good!
As jpfamps and ecc83 might have worked out from the fact that the new cathode resistors are 50-ohm and not 47, these are actually vintage resistors I had lying around in my boxes of salvaged bits and bobs. They may even have come out of old AC30s since I often increase the resistors to 62 ohms on those, which makes them a little less hard on the valves.
It's "mojo"…
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Kjdowd, "transconductance" is NOT a made up word from the telly people! It is an alternative to the older term "mutual conductance" which relates the change of anode current to change of grid voltage. "Conductance" being the reciprocal of resistance.
There. I hope that clears that up for you!
ICBM, have you measured power delivery at clipping?
Dave.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Now I understand why these amps have an Output Mute button, too - it makes chasing a fault easier if you don't want to turn the standby off and you don't want loud noises coming out of the speaker .
And the end of the day it's still a rat's nest of interboard cabling, plastic jumper connectors, crimp terminals, average-quality PCBs, flimsy pots and other assorted junk which does not exactly give a warm feeling of owning something well-made and reliable...
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
I was always alarmed at just how hot the top of the amp used to get, and the fact it didn't have any sort of grill to allow the hot air to escape? My mate did drop my combo onto the ground after a gig once, it still worked though!
This one is missing the middle panel but it doesn't actually get that hot, now - maybe yours had bias runaway from the factory? They always used to bias them far too hot anyway.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
6 or 7 years ago, before the big explosion of stupid boutique overdrive pedals, biasing your amp "tubes" hot was the known tgp method. I remember reading a review of an amp in guitarist that boasted the hot biasing...
I also remember the review of the vintage modern, amp of the year, for its bulletproof build and awesome tones at any volume... Lol.
So maybe Marshall biased hot based on the press at the time. When I got my Laney, advice online for mods was to "put a choke in it and bias the tubes hot".
I like your new avatar by the way .
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Thank you, I've always thought that Rita Hayworth was far more attractive than Marilyn Monroe