soundminded Posted September 21, 2009 Report Share Posted September 21, 2009 I've got my AR9 woofers and LMRs out for refoaming. the originals finally bit the dust. While I'm at it, I'm going to replace all of the caps except in the woofer section. I noticed that in my late production versions, the capacitor directly across the UMR is 8 mfd, not 6 as is shown in the library. This will result in a HF rolloff at a lower frequency than it would with a 6 mfd cap. I'll keep the design the way it is. Anyone else find a similar difference? Link to comment Share on other sites More sharing options...
KlausDK Posted September 22, 2009 Report Share Posted September 22, 2009 I've got my AR9 woofers and LMRs out for refoaming. the originals finally bit the dust. While I'm at it, I'm going to replace all of the caps except in the woofer section. I noticed that in my late production versions, the capacitor directly across the UMR is 8 mfd, not 6 as is shown in the library. This will result in a HF rolloff at a lower frequency than it would with a 6 mfd cap. I'll keep the design the way it is. Anyone else find a similar difference?Take a look at the correction to the AR-9 schematic Bret posted, 8 uF seems to be the correct value:http://www.classicspeakerpages.net/IP.Boar...?showtopic=3797BRgds Klaus Link to comment Share on other sites More sharing options...
soundminded Posted September 22, 2009 Author Report Share Posted September 22, 2009 Take a look at the correction to the AR-9 schematic Bret posted, 8 uF seems to be the correct value:http://www.classicspeakerpages.net/IP.Boar...?showtopic=3797BRgds KlausThanks. Link to comment Share on other sites More sharing options...
stumpy21 Posted September 22, 2009 Report Share Posted September 22, 2009 This page from the archive section may be of interestClassic Pages - Acoustic Research Link to comment Share on other sites More sharing options...
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