Hi. I'm trying to put an internal stereo amplifier and speaker inside my computer case, since I'm tired with all the plugging and unplugging of my active speakers everytime the computer have to be moved...
So I open my active speaker, take the amplifier components out of it, put those components inside an used floppy disk drive, and mount the speakers on one of the empty drive bays, after some soldering, all worked well, but here goes the problem:
The original pot (variable resistor) used to control the volume of the amplifier is 10k OHM (the rotating version), and because of the space, I have to replace it with a sliding version, which I'm only able to find 50k OHM sliding pot in my city...
So I tested the amp with the new 50k pot, but now it have humming noise out of the speakers, so, does anybody know how to modify this pot (perhaps by adding some resistors or something) to make it works like the original 10k pot?
I have done:
- Checking all the line in and speaker connections
- Adding the LM7809 regulator circuit (I'm taking the power from
the 12v rail of my computer PSU)
- Testing it with another active speaker (which is worked fine)
- Entering almost every electronic components shop in my city
to find 10k OHM sliding pot!
So, any suggestions...?
So I open my active speaker, take the amplifier components out of it, put those components inside an used floppy disk drive, and mount the speakers on one of the empty drive bays, after some soldering, all worked well, but here goes the problem:
The original pot (variable resistor) used to control the volume of the amplifier is 10k OHM (the rotating version), and because of the space, I have to replace it with a sliding version, which I'm only able to find 50k OHM sliding pot in my city...
So I tested the amp with the new 50k pot, but now it have humming noise out of the speakers, so, does anybody know how to modify this pot (perhaps by adding some resistors or something) to make it works like the original 10k pot?
I have done:
- Checking all the line in and speaker connections
- Adding the LM7809 regulator circuit (I'm taking the power from
the 12v rail of my computer PSU)
- Testing it with another active speaker (which is worked fine)
- Entering almost every electronic components shop in my city
to find 10k OHM sliding pot!
So, any suggestions...?