First, let me thank everyone, but esp. Motherone, Roger, George, Panomaniac, and Panelhead for the detailed analysis and suggestions for modding.
This is my first electrical mod, so clearly at risk for a SNAFU.
I've done a test set up with the stock board in a simple rebox, to establish a baseline performance. I'm waiting on parts, esp. an Alps pot, so I'm using alligators instead of soldering the connections, as well as the stock pot. And therein lies the problem.
As shown in the picture, I've sliced into the pot, with the connections as labeled. I'm leaving the left three wires from the audio connection cut, as my understanding is these (left, right inputs, ground) are bypassed to the pot.
The problem is: on power up I get this sputtering, machine gun like sound.
A couple of additional facts:
1) I'm using a 12v regulated powersupply.
2) When I first wired it up, I spliced the input leads according to Motherone's listing of leads:
V = switch 12volt
out + = switch 12volt in
Ro = to volume from right channel
Lo = to volume from left channel
G = ground
Li = from volume control to amp left channel
Ri = from volume control to amp left channel.
When I did this, I got no sound out at all with power on, but actually a very faint output from my speaker with the power off (and the pot did work to attenuate the volume).
So: where did I miswire?
Thanks in advance,
Bob
This is my first electrical mod, so clearly at risk for a SNAFU.
I've done a test set up with the stock board in a simple rebox, to establish a baseline performance. I'm waiting on parts, esp. an Alps pot, so I'm using alligators instead of soldering the connections, as well as the stock pot. And therein lies the problem.
As shown in the picture, I've sliced into the pot, with the connections as labeled. I'm leaving the left three wires from the audio connection cut, as my understanding is these (left, right inputs, ground) are bypassed to the pot.
The problem is: on power up I get this sputtering, machine gun like sound.
A couple of additional facts:
1) I'm using a 12v regulated powersupply.
2) When I first wired it up, I spliced the input leads according to Motherone's listing of leads:
V = switch 12volt
out + = switch 12volt in
Ro = to volume from right channel
Lo = to volume from left channel
G = ground
Li = from volume control to amp left channel
Ri = from volume control to amp left channel.
When I did this, I got no sound out at all with power on, but actually a very faint output from my speaker with the power off (and the pot did work to attenuate the volume).
So: where did I miswire?
Thanks in advance,
Bob
