Hello friends! Long time lurker, first time poster.
Im currently rehabbing a pair of Marantz HD77’s and I’m going to need to replace the potentiometers for the mid, tweeter, and “super-tweeter”. Their values are 10, 5, and 3ohm respectively. The oem pots are wire wound. I’ve done a fair bit of searching around and finding pots in those values is close to impossible. This lead me to a thought. My understanding of pots is that the value associated with any given pot is its max resistance value and the minimum is 0ohm. So the 10ohm pot that came with the speaker would have a max impedance of 10ohms (turned all the way down as to decrease mid-bass?) and then would offer no resistance if turned all the way up as to increase mid-bass, 0ohm. If my assumption is correct, would I be better off finding audio grade resistors of the median value of each pot so as to simulate the pot in the “flat” position? The ability to adjust the levels from the speaker really has no appeal to me. But if replacements were a viable option I would do that for originality sake.
Thanks for the help.
Ramsey
Im currently rehabbing a pair of Marantz HD77’s and I’m going to need to replace the potentiometers for the mid, tweeter, and “super-tweeter”. Their values are 10, 5, and 3ohm respectively. The oem pots are wire wound. I’ve done a fair bit of searching around and finding pots in those values is close to impossible. This lead me to a thought. My understanding of pots is that the value associated with any given pot is its max resistance value and the minimum is 0ohm. So the 10ohm pot that came with the speaker would have a max impedance of 10ohms (turned all the way down as to decrease mid-bass?) and then would offer no resistance if turned all the way up as to increase mid-bass, 0ohm. If my assumption is correct, would I be better off finding audio grade resistors of the median value of each pot so as to simulate the pot in the “flat” position? The ability to adjust the levels from the speaker really has no appeal to me. But if replacements were a viable option I would do that for originality sake.
Thanks for the help.
Ramsey
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