![]() Replacing the ~50 year old electrolyte capacitors was a very interesting experience, the old ones were Rubycon so no explosion or swelling, but it doesn't take an expert to know that they're way off their advertisied values after such a long time.Īfter placing the new capacitors, the first 2 hours the speaker sounded just way off, way deeper than usual and as if the enclosure was left open or something. I always exchanged components for components of equal values (Basically the most expensive option from Dayton Audio, which is borderline snake oil, but not there yet) Get to the caps immediately.I have been 'renovating' a pair of Sansui SP 1700 that my grandparent gave me to me few years ago, they were made in 1973 so pretty 'antique' even in the vintage audio niche.Įverything I replaced, I did it per speaker so i can hear the difference as i progress. ![]() WOW!!!!!!!!Can you believe me if I tell you the SP-200, with the highs switched to 'Clear' on its back panel, actually sounds more airy than my trusted Celestion SL-700 on the same setup?Believe me in this. I mate them to my JBL4320 quad stacks using active cross-over at 200Hz, tri-amping to the quad JBL and the SP-200. Some internet sources say it's 100dB SPL efficient, while the original pamphlet says 95dB. ![]() Yikesssssssssssssssssss!Again long story short, I ordered some new mkp caps and voila!The cap update and de-oxit clean job made the SP-200 sound very very very crystal clear with rich mid bass arnd 200Hz, and a very lucent mids probably thanks to the two 5' squawkers serving up to 5KHz. ![]() ![]() This pair sounded awful with muddled sound like there was no mids no highs.But I opened the back baffle and found easily, one non-polar 4 ufd Rubycon axial grey cap exploded on one side, giving an open circuit to the tweeter, and all the other 3 caps were all too far off stated capacitances, like the other 4 ufd changed to 1.2ufd, an 8 ufd to 2.8, and a 24 ufd to 8 ufd. ![]()
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