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4.
SAT 12 Feature
Overview
1.
Multi-Aperture Acoustic Diffraction Absorber - To reduce
destructive cabinet diffraction reflections, Blue Sky has developed
and incorporated into the baffle, the proprietary "Multi-Aperture
Acoustic Diffraction Absorber", which helps to maintain smooth on
and off axis frequency response throughout the critical MF and HF
frequency range, without the need for a large wave guide or horn.
2.
Rotatable MF/HF plate - The mid frequency and high frequency
mounting plate can be rotated, so that the SAT 12 can operate
in both vertical and horizontal modes. To rotate the plate, the
twelve 4 mm hex head mounting screws around the plate need to
be removed. Please support the plate with your hand while you
do this. Once the screws are removed, the plate can easily be
removed by tilting the cabinet forward. After this has been done,
you can rotate the plate into the vertical or horizontal position.
Please ensure that the wires leading to the LED plate, MF and HF
drivers are not being pinched, or interfered with in anyway, then
re-instal the plate, making sure to properly install and tighten all
of the screws. Below are three illustrations showing vertical, left
horizontal and right horizontal configurations.
Left Horizontal
3.
Power and Protect (internal limiters) LED Indicator Panel - The
front LED panel features two indicator LEDs. The top BLUE "POWER"
LED will be lit when the unit is powered ON. This LED can be set
to only temporarily flash at power on, by setting the back panel dip
switches, marked "Front Panel LED Flash" / "ON" to the UP position.
Please see page 6 & 7 [A Tour of the SAT 12 Amplifier & Electronics]
for more information.
The RED "PROTECT" LED, when lit or flashing, indicates that one
of the three internal limiters is being activated. The limiters are
designed to stay completely out of circuit, unless certain short term
or long term levels are exceeded. Limiting should only occur under
the most extreme conditions and has been included in the SAT 12
to ensure long term, problem free operation.
4.
1/4 x 20 Mounting Inserts (located on the back and bottom
of the SAT 12) - Inserts / hole patterns, compatible with
OmniMount® Type 120 brackets are located on the back and on
the bottom of the SAT 12. These brackets are designed to support
up to 120 pounds of weight when properly installed. Please visit
www.omnimount.com for more information, including detailed
mounting instructions. Please see page 18 [Cabinet Dimension]
for more information on insert locations. Also see page 3 [Safety
Instructions] item 17 "MOUNTING".
5.
Dual independent input stages, via XLR connectors - The
rear panel of Big Blue incorporates two completely independent
balanced input stages with XLR connectors. The main input is for
Right Horizontal
6.
7.
8.
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POWER
PROTECT
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standard 80Hz bass-managed operation and the second input is
for traditional monitoring, without the use of a SUB (-3dB @ 45Hz,
with a roll off of 12 per octave). For more information please see
page 6 & 7 [A Tour of the SAT 12 Amplifier & Electronics] and page
9 [System Signal Flow & Connections].
For true full-range monitoring we strongly recommend using either
the SUB 15 or multiple SUB 12s with Big Blue. For more information
please see page 4 [Important notes about the SAT 12 and this
owners manual].
Baffle Compensation - The SAT 12 includes four primary baffle
compensation settings, each of which reduces the MF to LF
"bump" that typically results from mounting a speaker in a baffle
wall. The amount of compensation needed is dependent on room
acoustics, along with the size and type of baffle wall. The only way
to accurately determine the amount of compensation needed is
to use a high resolution acoustic analyzer, such as MLSSA, TEF, etc.
For more information please see page 6 & 7 [A Tour of the SAT 12
Amplifier & Electronics] and page 15 [Measurement Data].
Individual Driver Level Controls - The SAT 12 includes +/- 3dB
of individual driver level adjustments, in 1dB increments. The
switches are additive, so in order to increase the level of a driver
by 3dB set both the 2 and 1dB switches to the UP position. We
highly recommend that you only change these settings, from the
"flat" position, as a last resort and only after doing proper acoustics
treatment of the room and ensuring proper placement of the SAT
12. For more information please see page 6 & 7 [A Tour of the SAT
12 Amplifier & Electronics] and page 15 & 16 [Measurement Data].
Input gain and level controls - The SAT 12 includes both a
continuously variable input gain control and individual 10dB input
pads. This allows the user to adjust the gain from REF (200mv of
500 to 2kHz pink noise = 90dB SPL @ 1M) to -22dB. For more
information please see page 6 & 7 [A Tour of the SAT 12 Amplifier
& Electronics].
Page 5
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