Volume pot removal?

[grolschie]

Hello. Please forgive the noobish question....

I have a circuit that I like the sound of when a 100k volume pot is on max. If I want to eliminate said volume pot, do I need to run a 100k resistor from the signal to ground to keep the existing sound level?

I am thinking when the pot is fully open (full volume), lugs 1-2 have minimal resistance, and lugs 2-3 have 100k resistance to ground.

I don't want any more signal getting through to the rest of the circuit, other than what would have when the pot was fully open.

Or...what if I wanted to replicate 3/4 volume setting? Thanks in advance.

[aron]

Yes, you got it.

[liddokun]

If you wanted to replicate 3/4 volume pot setting, just set the pot to 3/4 turn, dmm the resistance between lug 2-3, and use a similar value resistor.

[aron]

For 3/4, measure wiper to one outer lug, then wiper to the other lug. Then replace with fixed value (closest value resistors). At the junction of the two resistors, take the output to the next part of the circuit.

[grolschie]

Brilliant. Thanks guys. :-)

[Cardboard Tube Samurai]

I've had a similar question plaguing me for a while now but have been afraid to ask for fear of looking too noobish. I've got an effect that sounds amazing at full volume but is insanely loud at such. Is there a way to get the sound of the maxed out pot but still be able to control the volume? I'm sure it's a simple answer but I can't get my head around it for some reason

[grolschie]

This is similar to my scenario perhaps? There's a volume knob before a gain stage. So I plan to max/bypass the volume knob, and add a volume knob at the output of the circuit. Another thought is perhaps to put a buffer somewhere near the output - but that might be pointless?

EDIT: Another question. If I want to reduce the maximum output of the volume knob by half, do I add a resistor half the size of the pot, in series before the volume pot and also same size resistor to ground after the pot, i.e. a voltage divider?

[grolschie]

If I want to eliminate said volume pot...

ahem... I have overlooked the obvious..... replace the 100k pot with a 100k trimpot.  No calculations needed for 3/4 volume - just a twist of the screwdriver. Tweak anytime. 

Although I am glad I asked this question, as I am learning how these things work. Many thanks.

[MohiZ]

EDIT: Another question. If I want to reduce the maximum output of the volume knob by half, do I add a resistor half the size of the pot, in series before the volume pot and also same size resistor to ground after the pot, i.e. a voltage divider?

Nah, that would only narrow the range of the volume control. You only need to put a resistor in series before the pot, and the resistor value should be the same as the pot value.

[grolschie]

Thanks for that info.