OSD Audio PA90, Owner'S Manual, Page: 5 / 6

OUTPUT
The OSD PA90 output module, including ( ),
24V DC back up power supply, 8 ohm output, 70V output and
100V output, is using the screw terminal connectors.
If you will use 8 ohm output, connect the speaker’s positive
terminal to the amplifier’s “8 Ω” terminal and connect the
speaker’s negative terminal to the amplifier’s “COM” terminal.
If you will use 70V output, connect the speaker’s positive
terminal to the amplifier’s “70V ” terminal and connect the
speaker’s negative terminal to the amplifier’s “COM” terminal.
If you will use 100V output, connect the speaker’s positive
terminal to the amplifier’s “100V ” terminal and connect the
speaker’s negative terminal to the amplifier’s “COM” terminal.
The PPT connectors allow you to connect the OSD PA90 to
external devices to activate the “Push To Talk” function. When
this function is switched on, all inputs will be mute and you can
use MIC 1 to make broadcasting or announcement.
The 24V DC connectors allow you to connect external back up
power supply to OSD PA90. It helps you th use OSD PA90 in
applications that must continue to operate in case of a power
failure or in mobile applications where 115V or 230V AC power
is not available.
PTT Push To Talk
PA90 Power Amplifier Specifications
Power Bandwidth: 55Hz - 15kHZ
60W into 8 ohm output mode with less than 1% THD+N
60W into 70V output mode with less than 1% THD+N
60W into 100V output mode with less than 1% THD+N
Frequency Response: 55Hz to 15kHz, (+0dB, -3.0dB)
AC Mains Fuse: T2A/250V
Note: This amplifier will supply 60W to the output.
Please verify that your speakers are capable of
handling such power to avoid possible damage!
NOTE: This amplifier is capable of use with standard US
voltage (115V) as well as European voltage (230V). The
amplifier will be preset for the voltage of the country it is
sold in. Use with other voltages requires some changes
to be made to the amplifier. Should you wish to use the
amplifier in a country other than the one for which it was
purchased,
please contact OSD AUDIO at (562) 697-
2600.
Limited Warranty
OSD AUDIO: warrants its amplifier products against defects in
materials and workmanship for a limited period of time. For a
period of two years from date of original purchase, we will
repair or replace the product, at our option, without charge for
parts and labor.
This limited warranty applies only to purchases from
authorized OSD AUDIO retailers. This limited warranty is
extended only to the original purchaser and is valid only to
customers in USA.
Customers are required to provide a copy of the original sales
invoice from an authorized OSD AUDIO dealer when making a
claim against this limited warranty. This limited warranty only
covers failures due to defects in materials or workmanship that
occur during normal use. It does not cover failures resulting
f r o m a c c i d e n t , m i s u s e , a b u s e , n e g l e c t , m i s h a n d l i n g ,
misapplication, alteration, faulty installation, modification,
service by anyone other than OSD AUDIO or damage that is
attributable to acts of god. It does not cover costs or
transportation to OSD AUDIO or damage in transit. The
customer should return their defective product, freight prepaid
and insured, to OSD AUDIO, only after receiving a Returned
Merchandise Authorization (RMA) number.
This warranty will become void if the serial number
identification has been wholly or partially removed, altered or
erased. Repair of replacement under the terms of this warranty
does not extend the terms of this warranty. Should a product
prove to be defective in workmanship or material, the
customer’s sole remedies will be repair or replacement as
provided under the terms of this warranty. Under no
circumstances shall OSD AUDIO be liable for loss or damage,
direct, consequential or incidental, arising out of the use of or
inability to use the product.
8
Ω
70
V
100
V COM
24
V DC PTT
Signal to Noise ratio:
Mic: better than 55 dB
Line: better than 60 dB
AUX: better than 70 dB
TEL: better than 70 dB
Input Sensitivity:
Mic: -50 dB
Line: -20 dB
AUX: -12 dB
TEL: -10 dB
Tone Adjustment:
Bass: ±10 dB
Treble: ±10 dB
Dimensions: 19.0"w x 13.3"d x 3.6"h, “2U Rack Space Style”
Power Supply: Switchable AC 115V/230V, DC 24V
DC Mains Fuse: T8A/250V