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QUAD 989 problem.

One of my QUAD 989 ESLs has developed a problem. With no signal input, there is a squeeling, sputtering sound which meanders quickly all over the panel. I don't see any signs of sparking, so I'm assuming that this is a power supply, rather than a panel, issue. Does anyone know a source for 989 schematics or other service info? Any help or leads will be greatly appreciated.
dschoener
rrog
1,958 posts
 
Dschoener, I'm curious. How do the ESL-63s compare to the later model 989s?
dschoener OP
2 posts
 
Hi Rrog,

Bass extension is the only significant difference I notice. I was using subs with the 63s. I don't feel the need to use the subs with the 989s. But then I don't listen to much organ music.
uneasyrider
3 posts
 
Dischoener,

My Quad 989 is emulating yours. There's popping and beats from one speaker. Can you please tell me what you had to do to repair yours?
Thank you.
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