Introduction

Description

The ProMatrix products are designed for sound reinforcement/distribution in
multi-room applications. The PM-3180 consists of three independent ampli-
fiers, rated at 20, 60 and 100 watts. The PM-3000 is a three channel pre-
amplifier unit designed to offer the flexibility for applications with power
requirements that exceed the limits of the PM-3180. Both units have a pro-
grammable interface that lets you selectively assign priority levels to inputs
and custom configure features. As inputs become active or inactive they
are automatically switched onto or off of the channel.
Four Aux inputs and two Mic inputs lets you connect to a wide variety of
program sources. One of the Mic inputs can be set to accept input from a
telephone paging interface. The PM-3180 has outputs for 4- and 8-ohm
loads as well as 25V and 70V distributed systems, and includes provisions
to connect external signal processing equipment. The PM-3000 provides
both balanced and unbalanced line level output for each channel.
Here is an application example for a typical restaurant/bar establish-
ment using the PM-3180 amplifier: The 20-watt amp channel plays to the
entrance area/waiting room, the 60-watt amp channel to the dining area,
and the 100-watt amp channel to the bar/lounge. The area served by each
amp channel hears program material according to the priority level for the
inputs assigned to the amp channel. This example is illustrated below:
Amplifier Channel Amp 1 (100W) Amp 2 (60W) Amp 3 (20W)
Area Served Lounge Dining Area Waiting Room
PM-3180 Audio
Input Source Assigned Input Priorities
Aux A Juke Box 3 — —
Aux B CD Player 4 2 3
Aux C Radio 5 3 4
Aux D TV Feed 6 —
—
Mic A Emerg. Mic 1 1 1
Mic B Page Mic 2 — 2
1 = Highest Priority, 6 = Lowest Priority, — = Input not assigned to amp.
The lounge audio sources and microphones are prioritized as shown, with
the Mics having the highest priorities and the music source with descending
priorities. The dining area has completely different audio needs where cer-
tain audio sources (like the paging mic and juke box) are inhibited from use
in that area while the CD and radio are permitted to play. Likewise for the
waiting area where the inputs are assigned and prioritized for that area.
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