3
If you wish to use an unbalanced microphone, ensure the microphone is fitted with a standard 1/4” Mono Jack Plug, when this is inserted into the microphone input
socket, the input will automatically become unbalanced.
Phantom Power
A new feature has been added to the PA5000 series amplifiers. This feature will enable phantom powering of Electret Condenser Microphones. The phantom power
can be turned on or off by moving the shorting pliug on the link pins adjacent to each input.
The phantom powering is set to ‘OFF’ by default and can be enabled by following the instructions below:-
1
Remove the power lead from the wall socket.
2
Remove the top cover
3
Locate the link pins for each input socket (these are located behind each microphone input socket and are three vertical pins, two of which are shorted together
using a black coloured shorting plug).
4
Each set of link pins will have one pin marked with the letter ‘C’ (on the PCB), shorting this pin to the centre pin will enable the phantom power. To disconnect
the phantom power, move the shorting plug so that the centre and unmarked pins are shorted, or alternatively the shorting plug can be removed and kept in a
safe place for future use.
Booster Out Connections
For simple connections to a booster two RCA Phono sockets are fitted, these are shorted together internally and provide a fixed
output (output is independent of the master gain and tone controls, but dependant on the Mic/Aux level controls).
Pin:
Signal
Sleeve:
Screen
Where a variable output (output is dependent on all controls) or the extended features offered on the DIN Socket are required
proceed as follows:
Pin Number
Function
1
Variable Output
2
Signal and chassis ground
3
Open Collector, going to ground when a priority signal is present
4
Fixed Output
5
24Vdc output, used to phantom power other equipment, e.g. relays, microphones etc. Max current 0.5A total (not per socket).
SLEEVE
PIN
180° DIN SOCKET
Connecting a 5000 Series mixer amplifier
to a 5000 Series booster
These amplifiers can be connected using Phono to Phono leads from the mixer
amplifier booster out to the booster in socket on the booster amplifier, further
booster’s can be connected by connecting from the booster out of the first booster
amplifier to the booster in of the second. Up to three boosters can be connected in
this way.
If the two zone feature is required, the 5 pin DIN socket must be used. First decide if
you require fixed or variable output, from this pin wire to pin 1 of the DIN plug to the
booster, wire Pin 2 to Pin 2 (using the screen) and wire Pin 3 to Pin 3. This
completes the connection from the mixer/amplifier to the first booster. To wire from
one booster to another, wire Pin 1 to Pin 1, Pin 2 to Pin 2 and Pin 3 to Pin 3. This
lead should then be connected from the out socket of the first booster to the in
socket of the second. Up to three boosters can be connected in this way.
Loudspeaker Connection
Note: Use only 100V Line Loudspeakers
Two loudspeaker outputs are provided. The output marked ‘Speech/Music’ gives an
output at all times, reproducing any signal input into the amplifier. The output
marked ‘Speech Only’ will only reproduce a signal during a priority condition,
therefore an output from this connection will be present when Mic 1 or Mic 2 is in a
priority condition, this means that only the ‘Ding Dong’ chime and the signal from
one of these microphone inputs will be presented to this output.
Battery Connections
All of the 5000 series amplifiers can be operated from a 24Vdc power source. When connecting batteries please ensure correct polarity.
MUSIC/SPEECH
COM 100V COM 100V
SPEECH ONLY
Problem
Cause
Solution
The amplifier has distorted output
The 100V line cable has been
Move the 100V line cable
and runs very hot
run too close to a microphone cable
causing a high frequency oscillation
(inaudible) which is overdriving
the amplfier
The loudspeakers emit a humming
The screen of the microphone is
Check the screen connections
noise that increases when the
disconnected or the microphone
and/or move the microphone
microphone level control is increased
cable has been run too close to
cable
mains, data or telephone cables
A howling noise is heard when the
A loudspeaker is too close to the
Disconnect/move the the loudspeaker
microphone level is increased
microphone
or move the microphone
Amplifier runs OK but gets
Poor ventilation
Make sure that the ventilation
very hot
slots are free of obstruction and
there is free circulation of air
around the equipment
Output is very high and distorted when the
The microphone input is overloaded
Try using the Aux input
microphone level control is moved slightly
COMMON PROBLEMS
Summary of Contents for PA5060E
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