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A PPENDIX A
BUILDING A CUSTOM PROCARD
– 18 –
The 3X and 5X both ship with blank cards which can be assembled
to select any frequency you need for your system's design. Each card
is built using 4 capacitors and 4 resistors, the value of the resistors
determines the operating frequency. The custom cards are also
available as model number XM00 from your Authorized Rockford
Fosgate Dealer. The following section has instructions on assembling
the card. The PC Board is fragile and extra care should be taken to
avoid damage.
Items Needed:
1. Soldering Pencil
40 to 60 Watt electronic soldering iron
2. 60/40 resin core solder
3. Solder Braid - to keep surface free of excess solder
4. Capacitors - Each card uses four .022µF capacitors. These should
be metal film capacitors with a minimum rating of 16 volts.
5. Resistors - Each card uses four resistors. The resistance is deter-
mined by the operating frequency (refer to the following chart).
These can be either 1/8 or 1/4 Watt, 1% or 5% tolerance.
6. Wire Cutters
Refer to the following illustration for component placement. Install
the resistors, from the full range face, and fold the leads slightly toward
the inside of the board to hold them in position. Solder the resistors
in place and use the solder braid to remove any excess solder. Install
the capacitors in the same manner. Trim the component leads.
Examine the board carefully to ensure there is no solder splashed,
paying particular attention to the contacts on each edge. Make sure
that the leads do not interfere when plugging the card into the socket.
Crossover Card
High Pass
Low Pass
Full Range
FULL
R2
R1
R2
R1