till
Head-Fier
- Joined
- Feb 17, 2004
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Hi all,
as my first project, I just assembled a CMOY according to Tangent´s excellent tutorial and the original CMOY article on Headwize, it is a Levallois variant with Meier crossfeed. The problem is that I can only get it to work at full volume or at a ridiculously low volume. The potentiometer I used is a dual 10k log.
If I use only four wires (no ground, just input and output for each channel), I get full volume regardless of how I turn the pot.
If I wire the remaining two pins to the ground, I can hear a very faint sound, but only with cheap low-impedance earbuds and the pot turned fully counterclockwise.
As discussed in this thread
http://www5.head-fi.org/forums/showt...threadid=43566 ,
the resistance between input and output decreases when turning the pot clockwise, Rmax being about 9K for each channel. R between output and ground increases when turning clockwise, but Rmax is only 30 ohms here. So I assume that my input signal is leaking to the ground, but I have no idea how to prevent this.
Hints, anyone?
Till
as my first project, I just assembled a CMOY according to Tangent´s excellent tutorial and the original CMOY article on Headwize, it is a Levallois variant with Meier crossfeed. The problem is that I can only get it to work at full volume or at a ridiculously low volume. The potentiometer I used is a dual 10k log.
If I use only four wires (no ground, just input and output for each channel), I get full volume regardless of how I turn the pot.
If I wire the remaining two pins to the ground, I can hear a very faint sound, but only with cheap low-impedance earbuds and the pot turned fully counterclockwise.
As discussed in this thread
http://www5.head-fi.org/forums/showt...threadid=43566 ,
the resistance between input and output decreases when turning the pot clockwise, Rmax being about 9K for each channel. R between output and ground increases when turning clockwise, but Rmax is only 30 ohms here. So I assume that my input signal is leaking to the ground, but I have no idea how to prevent this.
Hints, anyone?
Till