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Rear Panel
AC POWER INLET:
This is the receptacle for an IEC line cord, which provides AC power to the unit. Connect the line cord to
this connector to provide power to the unit. Damage to the equipment may result if improper line volt-
age is used. (See line voltage marking on unit).
Never break off the ground pin on any equipment. It is provided for your safety. If the outlet used
does not have a ground pin, a suitable grounding adapter should be used and the third wire should be
grounded properly. To prevent the risk of shock or re hazard, always make sure that the amplier and
all associated equipment is properly grounded.
NOTE: FOR U.K. ONLY
As the colors of the wires in the mains lead of this apparatus may not correspond with the colored mark-
ings identifying the terminals in your plug, proceed as follows: (1) The wire which is colored green and
yellow must be connected to the terminal which is marked by the letter E, or by the Earth symbol, or
colored green or green and yellow. (2) The wire which is colored blue must be connected to the terminal
which is marked with the letter N, or the color black. (3) The wire which is colored brown must be con-
nected to the terminal which is marked with the letter L, or the color red.
To avoid the risk of electrical shock, do not place ngers or any other objects into empty tube sockets
while power is being supplied to unit.
LOW CUT SWITCH
This switch is used to activate the LOW CUT filter for the corresponding channel. It is a push-type switch,
that requires a small tool to activate. The IN position routes the input signals through the 40 Hz LOW CUT
filter, while the OUT position bypasses the filter. This filter will cut extremely low frequencies, protecting
speakers from the possibility of over-excursion. The filter low-frequency rolloff is 12 dB per octave. The
LOW CUT filter for each channel will function independently of the crossover function.
CROSSOVER SWITCH (100 Hz crossover)
This switch is used to activate the 100 Hz crossover for the corresponding channel. It is also a
push-type switch and requires a small tool to activate. The PV 3800 offers two 100 Hz crossovers.
These are specially designed features that enhance the response of most loudspeakers in a typical
bi-amped application. Rather than having a flat output curve, these crossovers use special filters
to tailor the response and provide a flat acoustical output. This type of crossover sounds more
natural than conventional state-variable crossovers. With the switch IN, the input signals are routed
through the crossover and the low frequencies are automatically sent to the corresponding chan-
nel. At the same time, the high frequencies are sent to the HIGH OUT (9) jack and must then be
patched to the INPUT of the other channel of this amplifier or to another amplifier input to com-
plete the bi-amped system. With the switch OUT, the crossover is defeated and the input signal is
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