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Amplifier/Subwoofer
HPS500
Amplifier Removal
1.
Lay the subwoofer on its side on a padded surface,
amplifier facing upwards.
2.
Locate and remove the (2) Allen head screws (#2) at
the bottom of the plastic cover with a 3/32” wrench.
3.
Slide the amplifier straight down until it clears the
slotted brackets (#4) & (#5); pull away from the
cabinet and expose for servicing without further
disconnection.
4.
To remove individual boards if desired, remove Philips
screws and all relevant molex or other connectors.
5.
Wires threading through the cabinet, glued in place,
should be left intact under all circumstances.
Woofer Removal
1.
DO NOT ATTEMPT TO PRY THE GRILLE (#10) OUT
OF ITS RECESS.
2.
Lay the subwoofer on its side on a padded surface.
3.
Remove the (4) rubber foot plugs (#15).
4.
Remove the (4) 1” foot screws (#16), remove all four
feet.
5.
Remove all (12) 2” exposed bottom panel screws
(#13).
6.
Pull the bottom panel (#12) out of the cabinet - one
way to accomplish this is to partially screw one of
the 2” screws back into a threaded “foot” hole and pull
on the screw. Lift the bottom panel & woofer (#9) out
of the cabinet.
DISASSEMBLY PROCEDURES
WHEN SERVICING THIS AMPLIFIER:
1.
Do not touch the metal frame of the woofer (if removed from the cabinet) when driving the amplifier at high power
levels. In the unlikely event that the output devices in the amplifier fail and present an open circuit during their operation,
AND the driver voice coil was to come in contact with the motor assembly, hazardous voltage could be present at the
woofer frame.
2. When 120/230v-based test equipment is connected to the amplifier in any way, use of a 1000W isolation transformer
(Stancor model GIS-1000 or similar) on the subwoofer is necessary for safety; in addition, an isolator plug, (a
three-to-one pin adapter sometimes called a “cheater plug”) should be used on the power cord plug of the test equipment
being used.