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U
SING THE
The crossover functions are controlled through the use of an XCard and can
be set for high-pass, low-pass or full range operation. The XCard shipped with
your amplifier is set for Full Range. Each crossover card has two faces: one
face operates Full Range, the other has arrows to indicate the edge for
selecting HP (high-pass) or LP (low-pass) operation. Orient the card with the
desired operating edge, indicated by the arrow, toward the socket terminals
inside the amplifier. Firmly, but carefully, plug the card into the socket.
The crossover point can be altered by changing all 4 resistor values. Use the following
formula to select the appropriate resistor value to be placed on the XCard.
3386
f o
7234
f o
The actual formula is:
R =
2 f o c
Where: R =
XC
ARD
High-Pass
LP
HP
= R (in k ) for .047 f cap
= R (in k ) for .022 f cap
1
f o = desired crossover frequency
c = capacitor in farads
ex: .047 x 10 -6 for .047 f cap
Low-Pass
HP
LP
– 14 –
Full Range
FULL
Crossover Card
High Pass
FULL
Low Pass
Full Range
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