tastemakah Posted April 3, 2017 Share Posted April 3, 2017 I've owned Cornwalls, Fortes and just purchased a vintage pair of La Scalas. I hooked them up and marveled at the articulation and detail, but there was really noticable, grating levels distortion and harshness - even at low volume levels. Very strange because these 1996 La Scalas are actually newer than my Corns or Fortes. They look to be in good shape, and power is not a problem - i'm driving them with an Eico HF-81. Not sure if there is a bad driver somewhere or the xovers need to be rebuilt. Any suggestions as to what the culprit might be? Any ideas on how I could diagnose? Thanks! Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted April 3, 2017 Share Posted April 3, 2017 Seems to me that you may have tweeter issues, but with limited info, just a somewhat educated guess..... Quote Link to comment Share on other sites More sharing options...
Quiet_Hollow Posted April 3, 2017 Share Posted April 3, 2017 Start with the mechanical fixes (tune-up) first: 1. https://community.klipsch.com/index.php?/topic/143229-my-newold-pair-of-la-scala/&do=findComment&comment=1634397 then 2. https://community.klipsch.com/index.php?/topic/143229-my-newold-pair-of-la-scala/&do=findComment&comment=1634400 which dovetails into my write-up here: 3. https://community.klipsch.com/index.php?/topic/130970-is-it-the-al-3-or-the-squakers/& (suggest reading all my posts and watching the videos near the end) Quote Link to comment Share on other sites More sharing options...
JohnA Posted April 6, 2017 Share Posted April 6, 2017 On 4/2/2017 at 11:28 PM, tastemakah said: I've owned Cornwalls, Fortes and just purchased a vintage pair of La Scalas. I hooked them up and marveled at the articulation and detail, but there was really noticable, grating levels distortion and harshness - even at low volume levels. Very strange because these 1996 La Scalas are actually newer than my Corns or Fortes. They look to be in good shape, and power is not a problem - i'm driving them with an Eico HF-81. Not sure if there is a bad driver somewhere or the xovers need to be rebuilt. Any suggestions as to what the culprit might be? Any ideas on how I could diagnose? Thanks! First you have to help us by identifying which driver causes the distortion. A good first step would be to loosen and tighten all of the crossover connections and give the squawkers a gentle tightening. Quote Link to comment Share on other sites More sharing options...
racebum Posted April 8, 2017 Share Posted April 8, 2017 test amplifier on other speakers, if good take current speakers apart. check all connections. if good inspect crossovers, any bulging caps? 1996 is 21 years ago so electrolytics should be replaced. madisound, meniscus or parts express all can help you out with those. madisound has been selling brand new less than a year old bennics lately which would be my vote. if you have another woofer like a little 4 inch full range you can hook it to the squaker and tweeter outputs to see if it creates the same distorted sound. if it doesn't your problem is in the drivers, if it does your problem is in the wiring / crossover. an hour of testing could solve all your problems here Quote Link to comment Share on other sites More sharing options...
russ69 Posted April 8, 2017 Share Posted April 8, 2017 Check the drivers first but maybe a bad tube in the Eico? Quote Link to comment Share on other sites More sharing options...
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