Zeners For Input Question

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Zener Values for Input Protection

Hi Vince: A short while ago I posted the same question. The answer I received (I think it was from Robert Pear?) was back to back 5v 500mw zener diodes. I was asking about unbalanced RCA inputs, but I can't imagine that the requirements for unbalanced input would be much different.

Anyone know otherwise?
 
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Yeah, I have a few of the manuals. What confused me was that the input for the Zen amp was 9.1v then changed to 20v for protection. The Aleph 4 is 9.1v. I guess I'll go w/ the 9.1v because I'm working on a 2 stage, like the Aleph.
I guess I'm looking for the voltage to start protecting. Like you said, the application.

Thanks Petter
 
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