Sookwang Cho Posted August 7, 2011 Report Share Posted August 7, 2011 I have later AR3a speakers and started restoring and I'd like to replace with new capacitors.Is there any way to buy new one?Also I found that 50MF capacitors are different model each speaker, seems one speaker have been restored by someone but he didn't changed two speakers together. In this case what can be happen?Cheers, Link to comment Share on other sites More sharing options...
JKent Posted August 9, 2011 Report Share Posted August 9, 2011 Welcome to the CSP!If you are restoring the 3a, be sure to download this excellent resource:http://www.classicspeakerpages.net/library/acoustic_research/original_models_1954-1974/original_models_schematicss/restoring_the_ar-3a/restoring_the_ar-3a_full_pd.pdfIf you are asking whether it is possible to buy new capacitors, the answer is "yes." These online stores sell them:http://www.parts-express.com/crossover-capacitor-index.cfmhttp://www.madisoundspeakerstore.com/capacitors/http://www.erseaudio.com/Products/CapacitorsIf that did not answer the question, please rephrase your questionKent Link to comment Share on other sites More sharing options...
Shacky Posted August 10, 2011 Report Share Posted August 10, 2011 If either has the large can cap don't thow it out. They are great caps.I've had good luck with Solens caps. If replacing the large ones I've used Dayton but like the pair I have with original cans the best. Fantastic speakers! Link to comment Share on other sites More sharing options...
ADVENTAGIOUS Posted August 10, 2011 Report Share Posted August 10, 2011 Shacky, how different are the 3a's with the original 50uf caps compared with newer ones? I checked the originals in mine and they were within spec. but most folks on this site recommend replacing them. Thanks. Link to comment Share on other sites More sharing options...
Sookwang Cho Posted August 12, 2011 Author Report Share Posted August 12, 2011 Thanks everybody, I will replace the caps with Oil Caps except 150MFD, actually I don't have specific reason but seems it will be fine. Link to comment Share on other sites More sharing options...
ADVENTAGIOUS Posted August 13, 2011 Report Share Posted August 13, 2011 Shacky, I was tired I guess when I posted previous. I meant to say that my big caps 150 uf checked out fine....within 15% of their orginal spec. but it was recommended that they also be changed. I think you said that one of your pairs sounded better with the original 150 uf. Can you say more? Thanks.. Link to comment Share on other sites More sharing options...
Shacky Posted August 14, 2011 Report Share Posted August 14, 2011 I don't know if this was main reason my second pair sound better or not. I did a couple things different including bypassing mid and tweeter caps with PIO 0.047 uF, updating binding posts, and in general had more experience from first pair. But I did leave these large can caps in place. Ask anyone who heard them at last year's AK get together in Rochester, NY. Link to comment Share on other sites More sharing options...
Shacky Posted August 14, 2011 Report Share Posted August 14, 2011 For comparison here's my first pair. Sound great but second pair is better. Culd just be better condition drivers in play I just don't know. Link to comment Share on other sites More sharing options...
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