David Rapalyea Posted January 21, 2020 Share Posted January 21, 2020 I took delivery of some old Heresy H700s last week and the treble had a noticeable buzz to it. I figured maybe a bad tweeter horn so I cranked my SET amp up to perhaps nine ear spliting watts to force the issue. Instead of smoke and screeching mayhem I found the speakers seemed to have cleared up little by little. I speculate they have seldom been pushed beyond modest volume and maybe I "blew out" the carbon! So to speak. I had a car like that once. The speakers sound pretty clean to me now. I also ordered a low power sub-woofer and a Schiit four band tone control. Mostly I stream Tidal hires through bluetooth 5.0. Does anyone have thoughts on "exercising" such old equipment? I hear a big difference in my speakers. Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted January 21, 2020 Share Posted January 21, 2020 One thing I always do when I buy old speakers is open them up and disconnect and reconnect each driver wire several times at the driver and at the crossover network. This will give a good connection and will help remove oxidation. 1 1 Quote Link to comment Share on other sites More sharing options...
JohnA Posted January 21, 2020 Share Posted January 21, 2020 I think that's called an Italian Tune-up. 1 Quote Link to comment Share on other sites More sharing options...
glens Posted January 21, 2020 Share Posted January 21, 2020 That's what we called it in southern Wisconsin. Quote Link to comment Share on other sites More sharing options...
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