Border Patrol Power Supply Installation
Model: Art Audio Quintet and Concerto.
ELECTRICAL KNOWLEDGE IS
REQUIRED IN ORDER TO PERFORM THIS CONVERSION SAFELY. POTENTIALLY
LETHAL VOLTAGES ARE PRESENT. WE CANNOT BE HELD RESPONSIBLE FOR
ANY ERRORS OR ACCIDENTS THAT MIGHT ARISE WHEN PERFORMING THIS
CONVERSION. IF YOU HAVE ANY DOUBT ABOUT YOUR ABILITY TO PERFORM
THIS CONVERSION SAFELY PLEASE CONTACT US FIRST.
READ THE INSTRUCTIONS FULLY BEFORE COMMENCING
KIT CONTENTS. POWER SUPPLY, 4 WAY TERMINATED CABLE,
RUBBER GROMMET, HEAT SHRINK, IEC MAINS LEAD.
TOOLS REQUIRED. SOLDERING IRON, PLIERS, M4 ALLEN KEY,
SCREW DRIVER, SOLDER, ELECTRIC DRILL, 10mm BIT.
DISCONNECT THE ART AUDIO AMPLIFIER FROM THE MAINS
BEFORE BEGINNING. If the unit has been used
recently, allow sufficient time for the power supply
capacitors to discharge before beginning (5 mins is
VALVES NOTING THEIR POSITION.
This is a two stage conversion. The Stage 1 disables the
on-board high voltage supply and connects the new
off-board supply. Stage 2 enables the relay to switch the
new supply on and off from the existing on-off switch.
Remove the base plate from the amplifier.
Locate the bank of four electrolytic capacitors in the
front-centre of the chassis. De-solder and remove the
high wattage resistor that connects the positive (+)
terminals of the two outside capacitors. Do not de-solder or disturb any other connections to these capacitors.
The two printed circuit boards have two pairs of metal
pin terminals located at one of the back corners of the
board. Only one of the boards has wires connected to
these pins. De-solder the wires that are connected to
these terminals and insulate them with the heat shrink provided.
DANGER: The wires that come from the mains
transformer carry High Voltage AC:- Make sure the
insulation is complete.
a 10mm hole in the underside or back of the unit and fit
the rubber grommet supplied.
not to damage any internal components whilst drilling.
Feed the supplied 4-way cable through the hole.
Solder the RED wire to the Positive (+)
terminal of the electrolytic capacitor that has the
cluster of wires already attached to it.
Solder the GREEN wire to the six way
star ground terminal located to the side of the mains
You have completed the
attachment of the High Voltage supply
Solder the BLUE wire to Pin 2
of one of the Octal valve bases that carry the output
valves. Solder the YELLOW wire to Pin
7 of the same base.
This completes the connection to the relay inside the
Dress the new cables tidily and replace the base. Replace
the valves and connect the newly installed umbilical lead
to the off-board supply. Replace the mains leads to both
units. Switch on the Art Audio amplifier as usual. Your
amplifier should now be ready to play. The valve supply
will take longer to come up to operating voltage than the
old supply but this will have the advantage of
lengthening the life of the valves.
c/o Kaja Music Systems
Waldorf Maryland USA
Phone/Fax +1 301 705 7460