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Post subject: Re: A little more Tube Amp 101 Please !
Posted: Tue Mar 27, 2012 9:48 am
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Rock Star
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Posts: 6544
A little peccadillo of mine (and seems to work, even...) is if you have a really nicely balanced 12AT7 phase inverter, across its two sections--- (like a mil spec Sylvania 12AT7WA [or GE 6201] or a Mullard or Brimar CV 4024)--- is to matched the 100K-ohm resistors hanging off the two anodes. Try to get good 1% tolerance puppies and I even measure a batch to get the two closest to each other. Told you, a bit anal.

Also, if you have well matched 6L6GC's... hunt for tight tolerance grid-to-ground 220K-ohm resistors (also 1%, if you are like me with more pecca, than dillo)... The tone seems cleaner to a greater volume and the sustain a bit better---a bit cleaner chime to the decaying note.

Just another chaw to chew on.


http://www.webphix.com/schematic%20heav ... _schem.pdf


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Post subject: Re: A little more Tube Amp 101 Please !
Posted: Wed Mar 28, 2012 1:39 pm
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Professional Musician
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Joined: Tue Jul 17, 2007 3:08 pm
Posts: 2889
The 1500 ohm resistors are replaced, Big improvement !
Little crackle, extremely faint ! for the first half of a second when i first fired her up, now notta.

I used one watt 1.5K metal Oxide, I thought high heat tolerance would be a plus right over the power tubes.
spec was 1/2 watt.

Red Fang eminence should be here any minute to complete the cab.
Funny thing is I thought I was being so smart pairing the C-Rex and the Fang, did a little online searching and found, its been done & Done & Done.
Lots of rave reviews so.....
If i don't love it, i'll dig out a weber 12A150 to go with the fang.

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2004 50th Ann. Limited edition AMSE Stratocaster
2017 50's Baja Telecaster BSB

1968 Bandmaster with 2X12 cab C-rex speakers
VHT Special 6 Ultra combo

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