Left Channel Blues


After three and a half years of listening to my MA252 through SF Olympia IIIs with virtually no problems and much enjoyment, at least 4 times in the last 2 weeks, the left speaker goes very quiet and really crackly or fuzzy. 

So, unplug receiver, unplug speaker cables from receiver, then unplug cables from the speakers . . . wait 5 to ten minutes, reverse the steps above . . . AND it’s like it never happened. 

Today, I listened to cds for 3+ hours, all good, then, power up at midnight . . . Poof . . left channel gone again.

Speaker cables are Maze Audio (rip David) Eden series 12 gauge copper twisted pair configuration with 14k banana plugs on both ends.

What gives ?  Thoughts and recommendations will be appreciated !

This time after unplugging all cables, I will switch left for right speaker cables to see if right channel goes out . . . which hopefully will identify if problem is speaker cable or the amplifier.  Thanks all. 

 

 

 

 

128x128teboerio

I had a similar problem not long ago. No matter what I switched around the left channel was weak. I thought something in the crossover had gone south. I eventually used my phone to measure the speaker outputs, and BAM, they were exactly the same! Turned out my left hearing aid was malfunctioning.

Sounds like you have a broken connection in your Mac.  When it gets warm a connection expands and separates.

Call Mac.

Gotta be the amp.  Vanishingly unlikely you have an intermittent cable connection.

As an retired electronics repair tech, iso the problem one step at a time. Starting at the far end of the chain and working backwards. Speaker, speaker connection, speaker wire, termination at the amp and so on. Always keep in mind that just the act of handling these links in the chain can cause the problem to disappear, therefore the isolation must be verified at least twice. Guessing or assuming is not allowed. Any link in the chain can go belly-up at any time. This is one of the more perplexing and time consuming troubles to pinpoint. Guessing and checking one thing here then one thing there is a time waster. Regards    AB