asterisk users - Sep 2005 - Overhead Paging Systems...[More Info]

Thanks to all that have replied thus-far.

I have talked to Viking and they recommended the PA-2A paging amp.
(http://www.vikingelectronics.com/products/view_product.php?pid=317).  It
requires a 600ohm input.  Before I go beating my head against the wall
with this, has anyone else installed something similar?  Can you tell me
what hardware you used?  Any help would be better then none.

Thank You!
~kurth