QSC DCA Series - Factory-Switch Settings; Recommended Amplifier Settings

7
Use these tables to determine the
correct resistor values for the crossover
frequencies and delays you need. The
shaded values are for the high-pass
frequency (f
HP
) of the XC-3.
XC-3 Setting up the XC-3
Effects of high frequency boost on
frequency response (crossover
frequency = 500 Hz). A boost of +10 dB
is most common for compensating for
screen loss (attenuation of high
frequencies as sound passes through
screen perforations).
XC-3 Factory Switch Settings
XC-3 Recommended Amplifier Settings
Switches 7 & 8 ON: sets XC-3 to Biamp mode
Switch 1 ON: activates LF delay
Switches 3 through 6 OFF: HF boost disabled
Switches 2, 9, and 10 ON: Factory default settings for proper operation.
Clip limiters: ON (both channels)
Low frequency filters: ON (both channels), select either 30
or 50 Hz roll-off, depending on speaker specifications
(both channels)
Operating mode: stereo
Identifying SIP resistor networks
When shipped from the factory, the DIP switch settings should be set as follows:
)sm(yaleD eulavrotsiserPIS
8.1K72
4.1K22
3.1K02
2.1K81
1K51
8.0K21
7.0K01
6.0K2.8
5.0K8.6
4.0K6.5
3.0K7.4
f(.qerfrevossorC
OX
) eulavrotsiserPIS
zH08 K86
zH051 K93
zH002 K72
zH052 K22
zH003 K02
zH053 K81
zH004 K51
zH005 K21
zH006K01
zH056K2.8
zH008K8.6
zHk1K6.5
zHk2.1K7.4
zHk5.1K9.3