System Signal Flow & Connections - BLUE SKY SAT 12 Owner's Manual

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7.
System Signal Flow & Connections
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2.1 & 2.0 SYSTEM SIGNAL FLOW & CONNECTIONS
Above is a simple diagram showing how a Big Blue system may be wired
for a stereo applications. The system show a full-range source (the console),
which has two monitoring outputs (A & B). Monitoring output A, is the main
bass-managed output and goes from the console, to the subwoofer and from
there to the 80Hz bass-managed input on the SAT 12. The system also shows
monitoring output B from the console being used as a full-range source for the
direct / "full-range" input on the SAT 12 (-3dB at 45Hz).
When a Big Blue system is configured as above, with two switchable
monitoring sources, the user can easily A/B between both a true full-range
system (20Hz LF response or better), using bass-managed and a subwoofer(s),
or the direct / full-range input (45Hz).
Multiple Subs:
The diagram above also shows the optional use of multiple subwoofers.
Multiple subwoofers can be used to increase SPL and improve the LF response
of the system, by placing the subwoofers, so as to smooth out the LF response
at the mix / monitoring position. Please note that we recommend that you
run the subs in MONO, by using the subwoofer out on the main sub and then
feeding the next sub in the chain.
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We do not recommend running stereo subwoofers, because the LF response
in the room will not be as consistent using this method. This is because
electrical summation of the LF signals (as is done with bass-management using
a mono subwoofer / LF signal), is a very predictable and repeatable way to get
consistent LF response. LF phase issues between channels are resolved in the
most absolute and accurate way - electrically.
Cable and connector wiring
Use high-quality, shielded cables to connect your console, workstation or
other sources to your Big Blue system. Foil-shielded cables, such as Belden
8451, 8761, or 9501 should do quite well. Other high quality cables are
available and those that incorporate better shielding will yield an overall higher
noise rejection, lowering your systems susceptibility to external interference.
Another important tip to keep in mind when wiring your system is to route all
line level cables away from the AC and other power sources, this will reduce
the probability of having AC hum emanating from your monitoring system.
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