Dormie Posted September 22, 2009 Report Share Posted September 22, 2009 hello,the original caps are in metal casepyramid2MPDKR 2-22x2 MF 200 VDC300 VT DCto replace these,what bi polar should I use (two 2 MF)???how should these be wired???update on surrounds,original surrounds were not supporting causing much distortion,treated them with permatex high tack sealant,now they perform as new at any volume and good bass,used DAP water tight roof sealant to seal the woofer frames to the cabinet,thank you for any assistance on the cross over Link to comment Share on other sites More sharing options...
Zilch Posted September 23, 2009 Report Share Posted September 23, 2009 Paper in oil.Leave 'em be.... Link to comment Share on other sites More sharing options...
Dormie Posted September 23, 2009 Author Report Share Posted September 23, 2009 Paper in oil.Leave 'em be....hello Zilch,so you are saying these AR-2 crossover caps have no life span = good forever,not like electrolytic that dry out with age,thank you Link to comment Share on other sites More sharing options...
Zilch Posted September 23, 2009 Report Share Posted September 23, 2009 hello Zilch,so you are saying these AR-2 crossover caps have no life span = good forever,not like electrolytic that dry out with age?Wait for others to weigh in on this one, but in my experience, yes. Link to comment Share on other sites More sharing options...
tysontom Posted September 24, 2009 Report Share Posted September 24, 2009 Wait for others to weigh in on this one, but in my experience, yes.I 100% agree with Zilch! These oil-filled capacitors will last almost indefinitely so long as they are not seriously over-driven. The tin-plated capacitor cans are hermetically sealed; no chance for moisture to enter the structure. Also, these capacitors were remnants of the old post-war mil-spec versions that AR and KLH used in the mid-to-late 1950s and in the very early 1960s, and they are high-quality units. The presence of the oil-filled caps is further evidence that these AR-2s date back to the early 1960s; possibly even the late 50s. The original owner most likely returned these early AR-2s to the factory to get the adapter plate and the 3 1/2-inch midrange driver to replace the old dual 5-inch Carbonneau drivers. While they were at it, AR probably installed the newer-style input-terminal plate on the back with the Aetna-Pollock level control.--Tom Tyson Link to comment Share on other sites More sharing options...
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