| DCAudioDIY.com http://dcaudiodiy.com/phpBB3/ |
|
| replacing a pot http://dcaudiodiy.com/phpBB3/viewtopic.php?f=4&t=2110 |
Page 2 of 2 |
| Author: | David McGown [ January 5th, 2022, 2:19 pm ] |
| Post subject: | Re: replacing a pot |
Shashi, No "power" is being burned off, just a voltage divider reducing the signal voltage at the input. The same amount of signal is "burned off" regardless of wiper position (from input to ground through the full pot resistance). All you are doing is tapping into a different spot with the wiper. Our perception of dynamics and frequency balance changes at lower listening levels (Fletcher-Munson curves). Also, there will be more resistor "noise" at the bottom of the pot (going through most of the trace), and with the level so low, the residual amplifier noise will be more prominent and not masked by the music. The question is how much of this is the pot (voltage divider) and how much of this is amplifier noise and our perception of the sound due to its level. David |
|
| Author: | Roscoe Primrose [ January 5th, 2022, 2:32 pm ] |
| Post subject: | Re: replacing a pot |
Without a pic, it's hard to tell what you mean bu friction only fit.... These probably have less problems with channel to channel matching if they'll work with your knob : https://www.ebay.com/itm/114496938022?h ... SwBg5c0Qg3 Available from the same vendor in values from 25k to 250k (at least), but I don't know why you'd want to go more than 100k unless you really like resistor noise  Roscoe |
|
| Page 2 of 2 | All times are UTC - 5 hours [ DST ] |
| Powered by phpBB® Forum Software © phpBB Group https://www.phpbb.com/ |
|