Crown Sst Modules; Sst-Mx Crossover; Sst-Sx Crossover; Figure 5.1 Sst-Mx Crossover Block Diagram - Crown Contractor Series Reference Manual

However, in both non-switching and conventional
switching designs, phase differences occur within the
power supply due to the inductance of the transformer.
This phase difference prevents much of the available
power from the AC mains from making its way to the
load.
PFC, however, compensates for phase differences in
the power supply, allowing more true power to be trans-
ferred to the amplifier. The result is more power with less
waste than any other conventional switching or non-
switching design.
As an added benefit, PFC also allows the amp to be
connected to any common AC line voltage, without con-
verting the power supply. This means that the CH4 and
CL4 are ready for any common line voltage.

5.3 Crown SST Modules

Crown optional SST (System Solution Topologies) mod-
ules were specially designed to improve the fidelity and
versatility of your audio system. They feature a variety
of professional signal routing and filtering capabilities,
with active crossovers that allow the audio signal to be
split and sent to auxiliary amplifiers. Your choice of SST
modules can be easily added to the amplifier by any
authorized Crown Service Center.
For information on wiring and configuration of amplifi-
ers equipped with an optional Crown SST crossover
module, please refer to the applicable SST Crossover
Reference Manual.
Refer to the following descriptions for an overview of
available Crown SST crossover modules.

5.3.1 SST-MX Crossover

The SST-MX crossover module features 24-dB/octave
Linkwitz-Riley tuned filters and stereo sub-bass outputs
for biamp operation of subs. See Figure 5.1 for SST-MX
block diagram.
Features of the SST-MX crossover include:
• Stereo biamp.
• 100-Hz fixed crossover
• 24-dB/octave Linkwitz-Riley tuned filters.
• Neutrik ® Combo ¼-inch (6.35-mm) and XLR in-
put jacks.
• Barrier block balanced outputs.
• Optional high-pass filter bypass on amplified
outputs adapts system for full-range use.
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Contractor Series Power Amplifiers

Figure 5.1 SST-MX Crossover Block Diagram

5.3.2 SST-SX Crossover

The SST-SX crossover module features 24-dB/octave
Linkwitz-Riley tuned filters and mono-summed sub-
bass outputs for biamp operation of subs. See Figure
5.2 for SST-SX block diagram.
Features of the SST-SX crossover include:
• Mono-summed sub-bass output.
• 24-dB/octave Linkwitz-Riley tuned filters.
• Crossover switchable between 80 and 120 Hz.
• Neutrik ® Combo (6.35-mm and XLR) input jacks.
• Male 3-pin XLR outputs
• Optional high-pass filter bypass on amplified
output adapts system for full-range use.
Reference Manual