Bandpassing the Midrange

The Fanatic Component Systems are optimized for full range music reproduc- tion. In cases where a subwoofer is used, the midrange can be bandpassed 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.: 500μF) to properly bandpass the midrange

4.Place the capacitor in series with the “+” terminal of the speaker

I

N S T A L L A T I O N

-

+

-

+

-

+

 

INPUT

MIDRANGE

TWEETER

 

+

0dB

 

 

C1

 

 

 

 

Ð3dB Subwoofer

 

 

 

 

Midrange

Tweeter

 

Ð

 

 

 

80Hz 6dB/octave HP

Frequency

Speaker

Hertz

(4 ohms)

 

 

 

 

 

 

C1

 

 

 

80Hz

500μF

100Hz

400μF

130Hz

300μF

200Hz

200μF

260Hz

150μF

400Hz

100μF

– 9

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Rockford Fosgate FNX-1406F, FNX-1405, FNX-1404 manual Bandpassing the Midrange