That's exactly what I needed, Hal. Thank you very much.

So, to clarify, the zone controller allows up to eight separate zones, correct? (This is what the customer has requested).

Industry-standard speakers with line transformers can be used, correct?

With the D20 Amplicenter, we are limited to 20 watts per zone, which makes sense, but is there an 'all-call' feature where all zones are connected at once?

I'm assuming that we need to allow for about one watt per speaker unless they are tapped down to 1/4 or 1/2 watts, correct?

This manual clarifies that regular existing 24 gauge telephone and riser cables can be used. I'm not a fan of doing this with a 70 volt system, but it appears to be OK, correct? (Note: This is how the existing wiring has been done).

Lastly, do you have the documentation for the zone controller, if such exists? I'm specifically interested in the codes that are dialed to use the system once it has been accessed.

Ed Vaughn, MBSWWYPBX