PAM-60/PAM-120 Public Address Amplifier
4. Phantom Power Switch
This switch switches the phantom power supply on or off for all channels. When
the switch is switched on, +24V DC power is supplied to pins 2 and 3 of each
channel’s input connector.
Use phantom power when connecting condenser microphones, which require an
external power supply.
NOTE: It is safe to connect most modern dynamic microphones or line level
devices to the channel inputs when phantom power is activated. However, some
older ribbon microphones may be damaged by phantom power, and certain
unbalanced line level devices may malfunction or produce an audible hum
when phantom power is active.
5. Priority Switch
When selected, these switches will give priority to Channels 1 and/or 2 over all
other channels and audio inputs.
6. Amp In
This input connects an external mixer or preamp with the unit’s power amp.
Inserting a plug into the Amp In jack will disconnect all input signal from the unit’s
internal mixer. Only signal from the external source will be heard.
7. Preamp Output
This output connects the unit with an external power amplifier. Inserting a plug
into the Preamp Out jack will disconnect signal to the unit’s power amp, sending
the output of the internal mixer to the external amplifier.
8. Link Out
This line-level output connects the unit with an external mixdown deck or other
recording source.
9. Link In
This line-level input connects the unit with an external mixer for expanded input
channels.
10. DC Input Terminals
These terminals are provided for the connection of backup battery. Connect a
24VDC battery source to these terminals. Make certain the red terminal is
connected to the battery’s positive (+) side, and the black terminal to the
battery’s negative (-) side.
11. AC and DC Fuse Holders
These holders contain the AC and DC overload protection fuses. If the fuse has
blown out, replace it with a fuse of the same type and rating, as shown below.
If the fuse continues to blow, refer servicing to a qualified service technician.
AC Fuse Ratings
Model 100VAC – 120 VAC 230VAC-240VAC 24VDC
PAM-60 3A / 250V 1.5A / 250V 5A/250V
PAM-120 5A / 250V 2.5A / 250V 10A/250V
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