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Capacitors for AR2ax Rebuild


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The "brick" reads 4 MFD (black) for the tweet and 6 MFD (green) for the mid. I've measured 6.7 MFD and 9.5 MFD, respectively, for Spkr 1. Spkr 2 is 5.3 MFD and 8.4 MFD. Both clearly out of spec, right? My question is what do I replace these with to be true to their original sound? Recommendations on specific brands/values would be greatly appreciated.

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I just got done with a crossover rebuild on my AR2ax's. Like you I noticed that the cap values were high. After some searching on the web I found out that this was due to the dielectric breaking down over time and was a good indicator of a leaky cap.

I replaced the caps with Solen fast caps bypassed (paralleled) by Dayton film and foil caps. The result is amazing. The music is detailed and all there. It is like pulling a mask off.

I have the cloth woofer surround. I used Butyl rubber caulk thinned with Xylene to make a "paint". I added thin coats till I couldn't see through in sunlight. I then put on a top coat of car vinyl conditioner. This brought the bass back to life. Very tight and solid. I can now see why these were such a desirable speaker in their day.

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