bubu91220 Posted April 15, 2023 Report Share Posted April 15, 2023 Hello ! I am restoring a pair of ar4x, I found these old ohmnite rheostats of 15 ohm are they compatible with the loudspeakers of the ar4x? Quote Link to comment Share on other sites More sharing options...
ReliaBill Engineer Posted April 16, 2023 Report Share Posted April 16, 2023 12.4 watt canned rheostat. Power-wise, it should work. Quote Link to comment Share on other sites More sharing options...
ReliaBill Engineer Posted April 16, 2023 Report Share Posted April 16, 2023 I bought these for $12 each. I wasn’t sure what condition I’d find my pots in on a pair of early 2-ax. Turned out they were in new condition. I tried one of these out. It fits nicely. But 20 ohm. Sounded fine! It bleeds off less current from the tweeter or midrange, and sounds fine. But I’d have to make a cover for them to keep the fiberglass out of the wiper mechanism, but that’s easily done. Quote Link to comment Share on other sites More sharing options...
bubu91220 Posted April 17, 2023 Author Report Share Posted April 17, 2023 I finally decided to install the 15 ohm ohmite rheostat I also changed the old capacitor which I changed to a 20 uf MBGO oil paper capacitor Quote Link to comment Share on other sites More sharing options...
bubu91220 Posted April 18, 2023 Author Report Share Posted April 18, 2023 12.5 watts for this potentiometer is it powerful enough? normally it is 16 ohm 25 watts. is there a risk for the loudspeakers? Quote Link to comment Share on other sites More sharing options...
bubu91220 Posted April 22, 2023 Author Report Share Posted April 22, 2023 I finally tested the ar4x with the 15 ohm ohmite pots and they work very well . Quote Link to comment Share on other sites More sharing options...
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