Carlspeak Posted April 6, 2007 Report Share Posted April 6, 2007 Recently finished working on a pair of series A34XXXX speakers with orange tweeters and metal framed woofers and wanted to share some results readers may find of interest.Three changes were made which seemed to improve the overall performance. First, the crossover electrical components were replaced with modern, audio grade caps and resistors. The switch and iron core coil were left intact. A new 12 and 1 uF cap were wired in parallel to equal the original 13 uF electrolytic.Second, the box was stiffenedd with new braces. I felt it failed the 'knock' test miserably. Original box wasn't braced at all. Braces were added front to back and on the sides and were screwed and glued in place.Third, the five foam blocks were replaced with slightly over 2 lbs of OC fiberglass. Note that stuffing content was not optimized for absolute lowest Fc.The attached report contains photos of the crossover, braces and OC FG. Two impedance and phase plots are included to show that box Fc was measurably reduced with the FG and, equally important, both impedance and phase variation was noticeably reduced - something amps typically benefit from.It's all about the musicCarlCarl's Custom Loudspeakers Link to comment Share on other sites More sharing options...
This topic is now archived and is closed to further replies.