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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. 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.
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
= R (in k ) for .047mf cap
f o
7234
= R (in k ) for .022mf cap
f o
XC
ARD
High-Pass
LP
HP
XC
ARD
Crossover Card
High Pass
FULL
Low Pass
Full Range
Low-Pass
Full Range
HP
LP
The actual formula is: R =
Where: R =
f o = desired crossover frequency
c = capacitor in farads
ex: .047 x 10 -6 for .047mf cap
– 14 –
FULL
1
2 f o c
a
O
p
d
e
v
r
a
a
n
t
c
i
e
o
d
n
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