I
NSTALLATION
Because of the number and type of vacuum tubes used, the PV11
dissipates a significant amount of heat (approximately 35 watts). It is
essential, therefore, that proper attention be paid to ventilation. The unit
should be mounted horizontally on a flat hard surface so that the
ventilation holes in the bottom are unobstructed. At least three inches of
clearance should be provided above the unit and the cabinet or shelf
should be open at the back. Vertical installation is not recommended.
To minimize hum pickup, keep the unit well away from the power
amplifier, and route power cords away from input cables.
The PV11 requires an ac power line providing between 108 and 125
volts at 50 to 60 Hz. Alternatively, the PV11 can be reconnected inter-
nally for operation on 220 volt power lines. Consult your dealer for
details about the conversion.
CONNECTION
Aux/ph: On a PV11L, this is an additional line-level input, and is
identical to the other inputs. On a PV11 with phono stage, this input
provides the amplification and equalization required by moving magnet
and high output moving coil cartridges. The phono input impedance is
the industry standard 47,000 ohms shunted by approximately 100 pico-
farads capacitance. This is well suited to nearly all moving magnet and
many high-output moving coil cartridges. If necessary, the input imped-
ance can be lowered by soldering a resistor across (from center pin to
ground) the input jack. To achieve a desired input resistance of RD, use
the following formula to compute the required additional resistance RA:
RA = 47000*RD/(47000-RD)
Some moving magnet cartridges require higher capacitance for opti-
mum performance. Increasing the input capacitance may be achieved
by soldering a suitable value capacitor across the phono input jack. Use
polystyrene capacitors for this purpose.
Tuner, cd, tape 1, tape 2: These are high level inputs and are electri-
cally equivalent. They present a 50k ohm load to the source. The
PV11 and PV11L Owner’s Manual 4
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