mrhagerty2 Posted January 6, 2022 Report Share Posted January 6, 2022 I have a vintage AR 12 inch subwoofer in excellent condition, except that the level control is spotty. Is the pot for the volume level control a sealed housing or can it be sprayed with contact cleaner? Quote Link to comment Share on other sites More sharing options...
DavidR Posted January 6, 2022 Report Share Posted January 6, 2022 The pots may be able to be flushed out with DE-oxit D5 spray. It is safe with most electrical components BUT I do know the old Sencore tube testers have trouble with a thin plastic material spacers in the switch components. Quote Link to comment Share on other sites More sharing options...
nefertem Posted January 7, 2022 Report Share Posted January 7, 2022 Hi have a 8 in AR powered subwoofer that I bought on ebay doa. So I tried to fix it but it was easier to buy a new one from parts express which I should of done first i was trying to get a AR sub to match my AR 18b speakers Quote Link to comment Share on other sites More sharing options...
mrhagerty2 Posted January 7, 2022 Author Report Share Posted January 7, 2022 Nefertem - Hey. Thanks. I will call them. Quote Link to comment Share on other sites More sharing options...
mrhagerty2 Posted January 7, 2022 Author Report Share Posted January 7, 2022 9 hours ago, DavidR said: . . BUT I do know the old Sencore tube testers have trouble with a thin plastic material spacers in the switch components. Not sure I get the connection between the volume control and a tube tester re: DE-oxit spray. ?? Quote Link to comment Share on other sites More sharing options...
mrhagerty2 Posted January 7, 2022 Author Report Share Posted January 7, 2022 9 hours ago, DavidR said: The pots may be able to be flushed out with DE-oxit D5 spray. It is safe with most electrical components BUT I do know the old Sencore tube testers have trouble with a thin plastic material spacers in the switch components. Did you have any issues resealing the panel after replacement? Quote Link to comment Share on other sites More sharing options...
mrhagerty2 Posted January 7, 2022 Author Report Share Posted January 7, 2022 9 hours ago, DavidR said: The pots may be able to be flushed out with DE-oxit D5 spray. It is safe with most electrical components BUT I do know the old Sencore tube testers have trouble with a thin plastic material spacers in the switch components. I also acquired my unit used on eBay. After ten years the volume control became touchy and then cut the signal permanently to 50%. My second unit was also from eBay and came with the control already a bit touchy. One observation about the AR sub is that in a port-to-front position it was weaker (per my room configuration). Turning it 90 deg away from front made it perform gangbusters. Quote Link to comment Share on other sites More sharing options...
DavidR Posted January 7, 2022 Report Share Posted January 7, 2022 7 hours ago, mrhagerty2 said: Not sure I get the connection between the volume control and a tube tester re: DE-oxit spray. ?? Tube testers have many pot switches they tend to have layers and some are plastic that is not compatible with deoxit. I don't know what's inside your volume control knob so I was alerting you to a possibility and to use caution. That's all. Quote Link to comment Share on other sites More sharing options...
Aadams Posted January 7, 2022 Report Share Posted January 7, 2022 9 hours ago, mrhagerty2 said: Turning it 90 deg away from front made it perform gangbusters. A practical example from Roy Allison's research on Boundary Effects Quote Link to comment Share on other sites More sharing options...
mrhagerty2 Posted January 7, 2022 Author Report Share Posted January 7, 2022 4 hours ago, DavidR said: Tube testers have many pot switches they tend to have layers and some are plastic that is not compatible with deoxit. I don't know what's inside your volume control knob so I was alerting you to a possibility and to use caution. That's all. Thanks for the tip Quote Link to comment Share on other sites More sharing options...
mrhagerty2 Posted January 7, 2022 Author Report Share Posted January 7, 2022 4 hours ago, Aadams said: A practical example from Roy Allison's research on Boundary Effects The ARS112 is down-firing. Would this study still apply? Quote Link to comment Share on other sites More sharing options...
Aadams Posted January 7, 2022 Report Share Posted January 7, 2022 2 hours ago, mrhagerty2 said: The ARS112 is down-firing. Would this study still apply? Ported and downfiring? My guess is probably not, but boundaries will still affect the output. You just need to experiment. Quote Link to comment Share on other sites More sharing options...
mrhagerty2 Posted January 8, 2022 Author Report Share Posted January 8, 2022 3 hours ago, Aadams said: Ported and downfiring? My guess is probably not, but boundaries will still affect the output. You just need to experiment. The AR 112 places the speaker firing down at the bottom of the box. Then there are two ports at the bottom of each side fore and aft. Quote Link to comment Share on other sites More sharing options...
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