I suppose your drawing would work, but the pot should be mounted in a chassis so it's sheilded. A 100K pot would be a little high for a passive preamp. 20K or so, would be more appropiate so it has a "low" output impedance. If you can physically mount the pot on your amp chassis, it should replace the input load resistor, in which case you could use a 100K.
Passive pre-amp in a cable?
I am wondering if the following works: Can I just take a pair of interconnects, cut em, and insert a stereo pot to create a passive pre-amp equivalent?
If so, do I wire it up as follows?
CD PLAYER OUTPUT
| Ground | Signal
| |
| ___/_ |
+--|10/0K|--+
| -/---
| /
| +--------+
| |
| Ground | Signal
POWER AMP INPUT
Any help appreciated as to hookups, and the correct value for the pot? I'll be using a CD player which has a discrete output stage that put puts about 2V swing, in to a small tube amp.
If so, do I wire it up as follows?
CD PLAYER OUTPUT
| Ground | Signal
| |
| ___/_ |
+--|10/0K|--+
| -/---
| /
| +--------+
| |
| Ground | Signal
POWER AMP INPUT
Any help appreciated as to hookups, and the correct value for the pot? I'll be using a CD player which has a discrete output stage that put puts about 2V swing, in to a small tube amp.