SDA 2A Distortion Right Speak Only

aaapel
aaapel Posts: 1
in Troubleshooting
My father passed down a pair of SDA 2A speakers to me many years ago and they have been absolutely fantastic until a couple months ago.

I am now experiencing major distortion and breakup in the right speaker after about 25 minutes of use. The left will continue to work fine but the right speaker is nothing but static and popping. Even when I stop the turntable that distortion continues until I turn off the amplifier.

I have tried swapping the speaker wires at the amplifier to insure that it is not an issue with the Marantz 2230 and I get the same result, only the right speaker is acting up.

Any thoughts? Or other things to troubleshoot?
· Share on FacebookShare on Twitter

Comments

  • Gardenstater
    Gardenstater Posts: 4,502
    edited April 2021
    That's a weird one......like........how does the speaker emit sound/noise when no signal input should be entering it? Anyway, putting that aside, I'd definitely do the resistance checks in the SDA Handbook as a starting point. If in doubt, just check everything that can be checked. Try swapping the cables at the speaker ends too, to rule out a cable problem.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
    · Share on FacebookShare on Twitter
  • pitdogg2
    pitdogg2 Posts: 25,553
    Try swapping the cables at the speaker ends too, to rule out a cable problem.
    Definitely try this first. Could be up the chain if it moves to the other side.
    · Share on FacebookShare on Twitter
  • invalid
    invalid Posts: 1,372
    Bad capacitor in the crossover can cause noise.
    · Share on FacebookShare on Twitter
  • audioluvr
    audioluvr Posts: 5,601
    invalid wrote: »
    Bad capacitor in the crossover can cause noise.

    Or a cold solder joint.
    Gustard X26 Pro DAC
    Belles 21A Pre modded with Mundorf Supreme caps
    B&K M200 Sonata monoblocks refreshed and upgraded
    Polk SDA 1C's modded / 1000Va Dreadnaught
    Wireworld Silver Eclipse IC's and speaker cables
    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)

    There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus
    · Share on FacebookShare on Twitter