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I'm assuming installing the AT7 and AY7 as per your and earwighoney's posts above will reduce the volume across the board? (i.e. I'll have an amp that doesn't go to 11 anymore but only 7!).
Offset "(Emp) - a little heavy on the hyperbole."
I'm actually surprised raising the pot value made much difference at all, unless you also went for a lower-percentage Log at the same time - stock is 15%, so a 10% would have helped. If anything going up to 500K should have increased the maximum volume available, since it's fed via a 220K resistor so you've increased the available signal from roughly 1/2 to roughly 2/3 of the level at the previous valve stage.
"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
Offset "(Emp) - a little heavy on the hyperbole."
Adding an extra resistor in series with the pot on the input side effectively adds more of the potential divider that now can't be reached - if the resistor is the same value as the pot, then you now can't turn up the signal above halfway.
So increasing the value of the pot with the same resistor means that you can now access slightly more of the total range.
Does that make sense?
In fact, reducing the value of the pot should have been more effective.
This is also why the taper of an 'audio taper' pot is important - the quoted figure is the ratio when the pot is at the halfway point. (Strictly speaking, Log means a 10% pot, but the two terms are often interchanged.)
But none of these changes will be anything like as effective as the volume box - then you effectively have two potential dividers in series (even though they're at different places in the circuit), so the result of the first is multiplied by the second. If you have both pots turned down to the 10% point, then the result will be 1% of the original signal.
"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
Offset "(Emp) - a little heavy on the hyperbole."
Actually this was why I eventually decided to go volume box for this very reason.... lots of room to dial it in. Happy to post a gut shot of the home made volume box if anyone would like to see the layout to build one!
(Full disclosure though - I can’t do any demos of it as I’m not currently using an amp; just my desktop interface, a few pedals and my laptop. I’m back studying a postgrad so space is at a premium and so my amps and a couple guitars are in storage at my parents place! I know a couple of studios nearby with practice spaces though so hopefully rent some time there soon!)
http://stinkfoot.se/archives/2159