Mains Connection
The supply transformer has been designed for use on either 115Vac or 230 Vac, selected by slide
switch on rear panel. The amplifier is factory set at 230 Vac mains voltage.
Battery Connection (24Vdc)
When using external batteries, earth the amplifier via the screw terminal because of the high
voltages present. Electrical stability of the system is increased by earthing the case.
NOTE:
The connection cable must be fitted with an in-line fuse. quick blow type (30W : 5A, 60W :
8A, 120W : 15A, 240W : 20A, 480W : 40A). When Connecting batteries please ensure correct
polarit y
.
Microphone Connection
Mic1~4 inputs are balanced standard 1/4” stereo jack, DIN and XLR Socket on the rear panel
(With selectable phantom power). Wiring is as follows:
XLR (Balanced Operation)
Pin1 : Screen
Pin2 : Signal (live)
Pin3 : Signal (return)
DIN (Balanced operation)
Pin1 : Signal (live)
Pin2 : GND
Pin3 : Signal (Return)
Pin4 : Priority Control
Pin5 :
GND
1/4” Stereo Jack Plug (Balanced operation)
Tip : Signal (live)
Ring : Signal (Return)
Sleeve : Screen
Priority Microphone
Mic1
input has VOX priority which will override Mic2~4 and Line input signals but NOT the
TEL / EMER input.
Mic2
input which will override Mic3~4 and Line input signals but NOT the TEL/EMER and Mic1
Inputs.
Mic3
input which will override Mic4 and Line input Signals but NOT the TEL/EMER Mic1 and
Mic2 Inputs.
Mic4
input which will override Line input Signals only but NOT the TEL/EMER Mic1, Mic2, and
Mic3 Inputs.
Mic3~4
input are (DIN, phone / XLR) with Selectable phantom power located on the rear panel
and wire as above. Mic1~2 input are with Selectable phantom power located on the PCB
(sw401, sw402)
1
4
2
5
3
2
1
3
COM 8 100V COM 100V
DC 24V
PRE OUT
MIC 2
MIC 1
SENS VR
MONITOR OUTPUT
TEL/EMER
SENS VR
MIC 4
MIC 3
MUSIC/SPEECH
LINE FUSE
Connected for 230v~
Apparatus delivered
115V~
230V~
600 1V
8 1W
~ 0 ~
+ P
MIC
MIC
LINE
LINE
PHANTOM
PHANTOM
+
GND
GND
PA 120/2 PRO: MAX 6W X 20
5 12
