tominredbank
New member
Hi all, love my Quickie but always trying to make it even better. Has anyone tried a resistor shunt mod on the volume control?
Quickie volume mod
- Thread starter tominredbank
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tominredbank
New member
Hi and thanks for the response. What value resistor did you use?
tominredbank
New member
I just changed out original volume control for a pair of Alps 100k mono pots and I can`t believe the difference!
tominredbank
New member
The shunt resistor mod or the Alps pots?
tominredbank said:
I used a 50K only because that was the only value I had in a quality resistor but you could use a 100K or higher. I have a 'direct in/1 input' mod also.
Give it a try, you can always try an Alps later on. Not sure if the Alps would sound that different than the original in a shunt situation.
Cheers,
Lary
aragorn723
New member
i'm curious about the shunt mod too, how did it change the sound? Also, what is the theory of doing this? I have a stock quickie with pjccs, and have been looking to squeeze some more performance out of it. Thanks!
Dave
Dave
In a traditional wiring the fixed resistance section of the pot goes to ground. The incoming voltage (signal) goes to the wiper and is dragged along the resistive element which varies the impedance. In a shunt configuration the signal goes through a fixed resistor (no moving parts) and the pot is rewired so the wiper varies the resistance to ground, out of the signal path.
To wire it as a shunt, you'll swap positions on the pot with the center wire (going to T1/5) and the ground. The ground is now on the center lug and the long wire on the right one. The short wire from the selector switch (on the left lug) is removed from the lug and you solder the resistor to the wire's end and attach the other end of the resistor to T1/5. The left pot lug is no longer used as the resistor replaces that function.
Good listening,
Lary
To wire it as a shunt, you'll swap positions on the pot with the center wire (going to T1/5) and the ground. The ground is now on the center lug and the long wire on the right one. The short wire from the selector switch (on the left lug) is removed from the lug and you solder the resistor to the wire's end and attach the other end of the resistor to T1/5. The left pot lug is no longer used as the resistor replaces that function.
Good listening,
Lary
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