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B. In the second case, the tone-arm
is mounted on a separate base
with respect to the platter, and is
therefore isolated from it
completely; however, the TWO
shieldings of the signal cables
coming from the cartridge are
connected together and in turn
they are connected to the metal
part of the tone-arm.
C. In the third case the tone-arm is
mounted apart (as in B). However, the
shielding wires from the cartridge are
floating and are not connected
together, or to the metal parts of the
tone-arm.
For the three cases mentioned above
(A, B and C) we suggest that you set
up your according to the three
descriptions below (A1, B1 and C1).
A1.
Single-block turntable
If hum still exists, then verify that the
two main power cords (of the PL-P and
the turntable) are connected to the
mains supply, as close as possible to
each other as suggested above in the
connection explanation. Floating the
earth lead from the turntable may also
be tried, as long as the earth
connection “X” above is correctly
installed.
B1. The
tone-arm is mounted separately
from the turntable, but the two
shieldings are connected together.
In this case be sure that only ONE of
the two jumpers is installed. If you
install both jumpers, you will
immediately have hum again which will
be louder or quieter depending on the
distance left between the two cables
linking the tone-arm with the PL-P.
This is explained by the fact that doing
this will form a loop which will pickup
magnetic flux from adjacent
equipment.
M
Ph N E
Turntable
Phase / Neutral / Earth
Tone-arm
NO
J
U
M
P
E
R
S
PL-P
Turntable
X
PL-P
x
NO
J
U
M
P
E
R
Tone-arm
J
U
M
PER
IN
S
T
A
L
L
E
D
INS
T
A
L
L
E
D
M
Ph N E
Turntable
Phase / Neutral / Earth
Tone-arm
