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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
teboerio's avatar
teboerio OP
30 posts
 

Mea culpa . . rip, Kent Maze.  He always took the time to speak with me on any question regarding his products.  A very nice man. 

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2psyop's avatar
Ag insider logo xs@2x
2psyop
1,558 posts
 

If you have another set of speakers (alternate pair), hook up

those speakers and if you hear the sound you can eliminate a speaker (main pair) problem.

carlsbad2's avatar
carlsbad2
1,602 posts
 

This is a tube amp.  You should always suspect a bad tube first when the gremlins visit.  Lots of options for swapping components.

I'd probably just swap left and right channel tubes.

If the problem moves, then it is a tube.  I'd then swap tubes back one tube at a time...until I identified the bad tube.  

Or just do some swapping out with new tubes.

Jerry

 

alan60's avatar
alan60
178 posts
 

Swap the speaker cables on back of amp, so left is now right etc. If the issue now occurs on the right channel then you know it is the amp and not the speakers, of don't forget to swap cables back. Then swap the left an right valves over on the amp etc.

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