Effect of Volume Pot Value

[Phend]

Hello
Couple of questions on the value of volume control pots and Gain (loudness).
Using the GGG Muffin Fuzz as an example,
The circuit calls for 100k.
Question,
If a 10k pot is used will the effect produce Less Gain (Volume)? 500k pot More gain (Volume) ?
Question,
When the pot is turned down, 0 ohms is between lugs 1 and 2 and there is no volume, correct ?

[antonis]

There is no Gain here..

R6 is set in parallel with R2 but, as far as R6 value is much higher than R2, it doesnt contribute into gain..

For R6 value 10k, you have 5k Q2 Collector effective resistance, resulting into lower Q2 stage gain..
(for a single CE amp, it should result into halving stage gain..)

Volume pot value is a compromise between previous stage output impedance (higher) and next effect input impedance (lower)

When pot is turned down, output is grounded so dead silent..

[PRR]

Q1 Q2 give very large gain with output impedance about 9.9k.

R6 of 100k gives about 0.9 of "very large gain".

R6 of 10k gives about half of "very large gain".

Turn pot down and you fade to black.

"Gain" here only has meaning for VERY small signals. Any input over a few milliVolts (very light strum) will just make 0.6V peak at the diodes and the top of the pot, no matter how much you put in.

[Phend]

Thank you Antonio and PRR.
Elaborating on my question, 
Volume is my concern. Ie, coming out of the amps speaker. Thanks for the gain lesson.
Building the fuzz circuit on a bread board I did not use a pot, in other words R6 was not there.
Sounded good, albeit I did not have a clean switch to compare.
When I boxed it up with a 100k pot the Volume is really loud at max, when switching between clean and fuzz.
Like really loud. Turn the 100k pot down sounds good. (This comment is probably answering my question, but)
But I would like clean and effect to be at simular volume when switching back and forth.
Hence my question,  would a 10k pot fix this.? PRR answered this.?  Continuing on...

Or in general for education ,  what effect do different values of volume pots have on Volume. (If any)
Higher the value, higher the volume?
In this particular case it is the SMD fuzz I just built so changing resistors is not an option. Changing pot is no problem.
(Must be all that silver,lol)
Thanks again.

[antonis]

But I would like clean and effect to be at simular volume when switching back and forth.
Hence my question,  would a 10k pot fix this.?

No..
A resistor in series with Volume pot lug 3 could be a remedy..
(in the mean of, it will offset downwards actuall R6 voltage divider..)

P.S.
When we're talking about "Volume", we actually are talking about signal ampitude, hence VOLTAGE..

Or in general for education ,  what effect do different values of volume pots have on Volume. (If any)

Absolutely none..
(what counts on volume/amplitude/voltage is the RATIO of divider resistances and not their absolute values..)

P.S.
Always considering next stage input impedance much higher than Volume pot's one..