Setup flowchart for the XC-3
Setting up the XC-3 requires setting the DIP switches and selecting/inserting SIP resistors into the appropriate sockets. DIP switches #2, #9, and #10 must be set to the ON position (default settings for the XC-3). The flowchart below takes you through all the steps necessary before mounting the accessory to the amp.
The illustration below shows the locations of the sockets for the SIP resistor networks. The SIP resistor networks can be inserted either way, as long as each network pin goes into its own hole in the socket. Straighten the pins, if needed, before inserting the SIP into its receptacle.
Use the tables on the following page to select the correct resistor networks for the settings you need. The SIPs supplied with the XC-3 provide a selectable frequency range for f XO of 80 Hz to 1.5 kHz, and delay settings from 0.3 to 1.8 milliseconds; contact QSC’s Technical Services Group if your application requires different settings.
When using the XC-3 in a three-way system in conjunction with the LF-3, the lower frequency (fHP) should match the crossover frequency of the LF-3 (fXO). The SIPs supplied with the XC-3 allow a selectable frequency range for fHP of 80 to 500 Hz.
XC-3 Factory-installed SIPs
fXO | 500 Hz (12 kΩ SIP resistor in J1) |
LF delay | 1.8 milliseconds (27 kΩ SIP resistor in J2) |
fHP | 80 Hz (68 kΩ SIP resistor in J7) |
XC-3 controls, switches, and SIP socket locations
