Page 2
Introduction
Thank you for choosing the PA 12-45 12-Channel Distributed Audio Amplifier.
The PA 12-45 combines 12 exceptionally sounding audio channels, tremedous input flexibility, user-
selectable AC supply voltage, and a trigger input and output - all in one convenient package.
Design features like our proven discrete class A/B technology, Sherbourn’s intelligent protection
system, and true commercial grade construction quality and reliability make the PA 12-45 the right
choice for your distributed audio needs.
Thank You!
The Sherbourn Team
About This Manual
This manual will provide you with all the information you need to install and configure the PA 12-
45 to achieve its optimum potential. This manual also includes a brief summary of the features
offered by the PA 12-45, a short description of how the controls work, and how to perform common
operations.
You may wish to record serial numbers or other purchase information on the Notes page at the back
of this manual.
The PA 12-45
The PA 12-45 provides 12 independent channels of audiophile quality, class A/B power
amplification-nominally arranged into six stereo zones. Each channel can receive signal either from
one of two input busses or from its own independent input, and each has its own independent, rear-
panel, volume control. Each channel pair can optionally be bridged into a single higher-powered
channel.
Each of the two stereo input busses can be configured to feed as many zones as required, and
can also feed a matching stereo set of output pass-through connectors. The PA 12-45 offers both
a power trigger input and a trigger output, and can also be triggered on by the presence of audio
signal at its inputs. Speaker connections are via full-sized five way binding posts. Power can be
either 115 VAC or 230 VAC, and is via a convenient removable IEC power cord.