rickrob2 Posted June 17, 2005 Report Share Posted June 17, 2005 Anyone have a DQ-20 Crossover schematic? Link to comment Share on other sites More sharing options...
Guest nathanso Posted February 9, 2006 Report Share Posted February 9, 2006 I'm considering a re-cap of my DQ-20s. Five of the six caps are clearly marked; the yellow one is not. It's marked 14J200V which I'm assuming means 14uF. Any ideas on that?DQ-20 crossover shopping list (for a pair of speakers):Qty--Value2--3uF4--5uF2--14uF*2--20uF2-68uF (on bottom board)All are 150V except the 68uF which is 35V. *Subject to confirmation.Also, does anyone know why there's a cut off green wire on the center-bottom terminal? It looks as if this wire may have been relocated to the right-bottom terminal at some point.The task doesn't seem too hard.. probably can do with both boards in place. The 68uF may be accessible via the binding post/fuse cover but there's a too-short blue wire that's preventing easy inspection of that right now. http://www.n8software.com/dq/IMG_6269.JPGhttp://www.n8software.com/dq/IMG_6267.JPG Link to comment Share on other sites More sharing options...
dynaco_dan Posted February 9, 2006 Report Share Posted February 9, 2006 Hi there;Excellent photos. Link to comment Share on other sites More sharing options...
Guest nathanso Posted February 15, 2006 Report Share Posted February 15, 2006 I've heard via email from a former Dahlquist employee that the yellow capacitor is a '14 uf 200 volt tecate mylar cap'. Link to comment Share on other sites More sharing options...
Guest nathanso Posted February 25, 2006 Report Share Posted February 25, 2006 No schematic here, but as this thread seems to be this site's only Dahlquist resource thus far I'm posting a URL to the original Dahlquist DQ-20 Owner's Manual for anyone who needs it:http://www.n8software.com/Dahlquist_DQ-20/ Link to comment Share on other sites More sharing options...
dynaco_dan Posted February 25, 2006 Report Share Posted February 25, 2006 Hi there;No schemetic found, but the manual from that site reads, that they used a 3 amp fast blow fuse for the 10" woofer and a 0.8 amp fast blow fuse for the 3/4" tweeter.I saw one chassis mount fuseholder in a photo.The speakers are rated 4 ohms.Perhaps this is useful for AR and Advent speakers as well. Link to comment Share on other sites More sharing options...
Guest mingles Posted April 25, 2007 Report Share Posted April 25, 2007 You'll find DQ-20 and DQ-20i schematics here: http://tech.groups.yahoo.com/group/Dahlquist/files/ Link to comment Share on other sites More sharing options...
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