Tunedguy57 Posted April 4, 2019 Report Share Posted April 4, 2019 I got my first A25's in 1975. They came with standard SEAS alnico woofers and H87 . One year later unfortunately swap them for A25XL. No bad but not that better than previous A25. Middle range less natural, even if more power handling. Soon I sold them and got AR6. Many years later, during 1985 I bought again a pair of A25, in excellent shape. Surprisingly I found inside a ceramic magnet woofer. That one mounted in XL model. Very nice compound! The speakers were much more powerful with a little bit more sensitivity in woofer range. After having renewed the capacitor with a polyester 5uF, I have been using them for years. Recently I was intrigued in some slight mods. So for whom having in their A25 ceramic+alnico mix, I give my tips to make, IHMO, A25 better. First: Place a 6uF capacitor instead standard value 5uF. Second: put a 0.39uF capacitor across the 2.2 ohm resistor series connected with tweeter. The first mod gives a much more smooth mid range. The second one lifts a little ( actually a very little bit) the emission of high frequencies above 12khz. Comparing these modded 25's with other speakers of my collection ( AR3a, KLH six, AR6 and many other) they sound really great, even if not better than AR3a, obviously. If you have a A25 with ceramic woofer, try and listen! Regards Tunedguy57 Quote Link to comment Share on other sites More sharing options...
Giorgio AR Posted April 6, 2019 Report Share Posted April 6, 2019 Hi Tunedguy57, It's a job you did very well !! I don't have Dynaco's speakers, but I listened to them, I think your crossover modification greatly improves the sound quality of A25 Dynaco ceramic woofer. Giorgio. Quote Link to comment Share on other sites More sharing options...
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