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U
S I N G T H E
The crossover functions are controlled through the use of an XCard
and can be set for high-pass, low-pass or full range operation. 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 ampli-
fier. Firmly, but carefully, plug the card into the socket.
C
USTOMIZING THE
The crossover point can be altered by changing the 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 .047mf cap
Low-Pass
HP
LP
XC
ARD
– 13 –
Full Range
FULL
Crossover Card
High Pass
FULL
Low Pass
Full Range
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