Rockford Fosgate Fanatic P FNP1414 Operating & Installation Manual page 11

Crossover Connections
Negative (Black Wire)
–
+
Positive (Black/White Stripe Wire)
(One channel of amplifier)
• Be Sure to Maintain Speaker Polarity
High-passing the Midrange
• The Fanatic Component Systems are optimized for full range music
reproduction. In cases where a subwoofer is used, the midrange can be
high-passed in order to prevent overlapping frequencies from the
midrange into the subwoofer.
1.Determine the frequency range that the subwoofer will play (i.e.: 20Hz-
80Hz)
2.Use the low-pass crossover frequency of the subwoofer system (i.e.:
80Hz) as the high-pass crossover frequency for the midrange
3.Select the appropriate capacitor value (i.e.: 500 F) to properly high-pass
the midrange
4.Place the capacitor in series with the "+" terminal of the speaker
Frequency
Hertz
80Hz
100Hz
130Hz
200Hz
260Hz
400Hz
Speaker
(4 ohms)
C1
500 F
400 F
300 F
200 F
150 F
100 F
– 8 –
Midrange Positive
+
–
Midrange Negative
0dB
–3dB
Subwoofer
80Hz
6dB/octave High-Pass
+
Midrange Positive
Midrange Negative –
+
(Purple Dot)
Tweeter Positive
–
Tweeter Negative
C1
Midrange Tweeter
I
® ®
N
S
T
A
L
L
A
T
I
O
N