Customer has added a 4 story building to existing 3 story bld....

I assume these buildings are attached to each other?

Would it be ok to pick up the audio in the old building,at the old amp, run it to the new 50 w amp, which would feed only the new ceiling speakers. I may need to add another amp on another floor if they add more speakers...

Unless there is some compelling reason to use multiple amplifiers such as zone paging, that would be one hell of a Rube Goldberg setup. How many speakers and what kind are we talking about here? I certainly hope that this is a 70.7 volt system and dispite what others may say I never recommend supplying the input of an amplifier with the speaker output of another. It's really not good practice.

From what you are saying all you should have to do is replace the existing amp with one of suitable power to supply all speakers as well as those anticipated in the future. Power is cheap.

-Hal

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