Pa90, Pa amplifier – OSD Audio PA-90 User Manual
Page 4
PA90
PA Amplifier
The POWER push button will manually switch the PA90
Commercial amplifier on or off.
Control Knobs
Output Adjustment
The OSD PA90 Commercial Amplifier allows you to adjust the
output volume, Treble and Bass by the corresponding control
knob on the front panel. There is a LED Meter to indicate the
output level located above the POWER pushbutton.
The OSD PA90 also has protect function. When it is short
circuit, or over-heating, or overload, this function will be
automatically switched on, then the product will mute and the
RED PROTECT LED indicator will illuminate.
Congratulations on your purchasing of OSD PA90 Commercial
Amplifier.
Please take a few moments to read the entire manual, and be
sure to retain this document for future reference. Please read
and observe all safety instructions detailed on each page.
Note: If any part of this product is damaged or missing,
please call OSD AUDIO Return Department at (562)
697-2600
Input Adjustment
The OSD PA90 also has CHIME and ALARM functions. The
ALARM has the top priority and CHIME is second over all the
inputs. When pressing CHIME button, all inputs will be
temporarily mute and the chime sound will come out. When
pressing ALE button, you will start the alarm function, the
alarm will keep on ringing and will not automatically stop until
you press the ALE button again. All inputs will be mute
including the CHIME tone when alarm function is on.
INPUTS
DIP switch is switched down, it means the corresponding MIC
input will provide a 24V phantom power to the microphone, if
the Phantom Power Supply DIP Switch is switched up, the
corresponding MIC input will not provide phantom power to
microphone.
The AUX inputs are using RCA connectors. Each group of AUX
input has “L” and “R” as left channel and right channel inputs
respectively.
The TEL input is using 3 pin terminal block. It allows you to
connect telephone signal as an input of PA 90. The TEL input
gain can be adjusted by the screwdriver adjustment knob
labeled as “Gain” beside the terminal block.
The PA90 commercial amplifier also has 1 pair of RCA
connectors used as “INSERT” in and out. The INSERT IN
connector allows to connect an external audio source to the
unit. The INSERT OUT connector allows to loop the input
sources of PA90 out to other devices.
NOTE: The MIC 1 Input has priority over the other inputs.
When the MIC 1 Input signal is present, the PA90 will
automatically mute other inputs and only MIC 1 Input is
available to output.
There is a total of 7 inputs on the rear panel of the PA90
Commercial Amplifier including 3 MIC inputs, 3 AUX inputs,
and 1 TEL input with input gain adjustment.
The MIC inputs are using balanced XLR connectors. Each MIC
input have a Line/Mic level DIP switch (Switch 1) and a 24V
Phantom Power Supply On/Off DIP switch (Switch 2). If the
Line/Mic DIP switch is switched down, the corresponding MIC
input is set to accept Mic level signal input, if the Line/Mic DIP
switch is switched up, the corresponding MIC input is set to
accept Line level signal input. If the Phantom Power Supply
230V
115V
2
3
0
Rated input power:130VA
FUSE: T1.5A/250V
CAUTION
AVIS
RISK OF ELECTRIC SHOCK
DO NOT OPEN.
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR CE CARTER,
RESERVE AU PERSONNEL
AUTORISE
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
CAUTION:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
8Ω 70V 100V
COM
24V
DC
PTT
MIC2
1 2
ON
INSERT
Out
In
AUX1
AUX2
AUX3
R
L
TEL
Gain
+ Gnd -
MIC3
MIC1
1 2
ON
Ph
an
to
m
(2
4V
)
M
ic
L
in
e
O
ff
Ph
an
to
m
(2
4V
)
M
ic
L
in
e
O
ff
Ph
an
to
m
(2
4V
)
M
ic
L
in
e
O
ff
1 2
ON
MIC2
1 2
ON
INSERT
Out
In
AUX1
AUX2
AUX3
R
L
TEL
Gain
+ Gnd -
MIC3
MIC1
1 2
ON
Ph
an
to
m
(2
4V
)
M
ic
L
in
e
O
ff
Ph
an
to
m
(2
4V
)
M
ic
L
in
e
O
ff
Ph
an
to
m
(2
4V
)
M
ic
L
in
e
O
ff
1 2
ON
The OSD PA90 70V/100V Commercial Amplifier has 7 inputs:
MIC 1, MIC 2, MIC 3, AUX 1, AUX 2, AUX 3, and TEL input.
Each of the MIC inputs and AUX inputs can be adjusted the
input gain using the corresponding control knob on the front
panel.