IP Reset
Ready
Sys
te
m
Ready
Not
O
utput Line
Po
E
Ac
tivit
y
RXD
TXD
GND
5-70
VAC
Ethe
rnet
PoE+ 802.3a
t
I/O
WP
A
-50x
I/O
Mute Sense Input
Public Address
Ch.A+ Spk Out
Ch.A- Spk Out
Ch.B+ Spk Out
Ch.B- Spk Out
RS232
A
ssembled in USA
Rev 7/3/19
M
odel MS
-300
Public Address distribution line 25/70/100V
To/From other rooms
25/70/100V Transformer
8 Ohm side
70.7 Volt side
Paging speaker
Page Overirde terminals
on amplifier
Standard
2-conductor
speaker
wire
Connect Page Override
terminals to 25/70/100V
side of the transformer
(typically attached to speaker)
Polarity does not matter
Public Address Mute Sense to Paging Speaker Connections
When using 4 speakers, wire ceiling speakers
parallel in the ceiling—bringing one speaker wire
per pair to the MS-500 amplifier channel.
2
www.AudioEnhancement.com • 800.383.9362
Speaker end
Amplifier end
Speaker wire with tinned leads can be used on
the spring loaded terminals on the speaker.
You must cut off the tinned portion of the ends
inserted into the green terminal blocks on the
amplifier so that bare copper is being captured
by the screw compression terminals.
