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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Tweak AR cross over posted by cktc on July 31, 2000 at 22:57:30:
I found similar value non-polarized electrolytic capacitors in my 20+
year old AR-11 speakers; I think those are typical values for a four ohm impedance speaker. The chokes were air core and resistors generic sandcast types.I found these speakers at a Goodwill for $18; the woofer surrounds were shot, but were not particulary difficult to repair. While I
had the speakers open, I took a look at the crossover network.
I replaced the tweeter and midrange capacitors with Solen polypropylenes; for the woofer Zobel(?) cap I tried out a high-voltage plastic 100uF cap with a 20 uF Solen in parallel, but otherwise I wouldn't bother with the woofer cap unless I knew a lot more than I do about crossover design.If your speakers are using non-polarized electrolytics, it might be worth replacing at least the midrange and tweeters with whatever polypropylene capacitors you can afford. Possibly bypass lower-cost
Solens with premium 1uF or 2uF caps. After that, maybe replace the
crossover resistors with quality wirewounds like Mills or even bulk
foil/film power resistors (see the Michael Percy catalog).Has anyone done extensive crossover tweaking of older Acoustic Research speakers?
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Follow Ups
- Re: Tweak AR cross over - Damon W. Hill 00:11:18 08/01/00 (0)
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