Rockford Fosgate AF/2HD, Installation Manual

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The selection is done simply by placing the capacitor module (C) in the socket location marked High
or Low on the PC board (See Figure 2). The empty location is where the resistor frequency module
(R) is placed. See the pictures in band and frequency section.
Note: Each channel can do both types of filters depending on where you put the capacitor
module.
LOW-PASS
LOW-PASS
HIGH-PASS
4