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TD-001624-01-A
Mounting the SC-2150
CAUTIONN!
All QSC cinema loudspeakers must be installed by trained personnel familiar with mounting large, heavy
loudspeakers in a safe and secure manner.
The SC-2150 is not designed for safe suspension. No part of the LF cabinet or Mid-Hi component should be used to support
the weight of the system.
Mounting Platforms
The maximum room length for the SC-2150 is 55 ft (17 m). Use in larger rooms may result in driver failures. For best performance,
Bi-Amp mode should be used whenever possible and especially for rooms at the upper end of the size range.
1. Prepare three platforms, left, center, and right, sturdy enough to safely support the SC-2150, and with the capability of vertical
adjustments.
2. Place the loudspeakers platforms and adjust the height so that the Mid-Hi system is at approximately 5/8 of the screen height.
3. Position the SC-2150 so that the front of the loudspeaker is about 6” (15 cm) from the perforated cinema screen.
Aiming
Once the Left, Center and Right SC-2150’s are in place, the Mid-Hi system should
be aimed for best coverage of the audience. Aiming can involve moving the horns
horizontally (panning) and vertically (tilting). The patented QSC Cine-Sight simplifies
aiming of the horns. The correct adjustment varies with the room size, shape and
seating slope. A point in the center of the room and about 2/3 of the way back from
the screen is usually a good starting place to aim the loudspeakers. You should check
front and rear rows for adequate high frequency coverage after the initial adjustment
and re-adjust the horns as needed to achieve the most uniform coverage.
Center Channel
The center channel is typically in the middle of the audience, so panning of the Mid-Hi
system is not usually required.
1. Make sure the Mid-Hi system is pointing straight ahead
2. Confirm that the three Mid-Hi mounting bolts are securely tightened.
3. Remove the two tilt adjustment screws (one on each side of the bracket)
4. Look through the rear horn bracket aiming hole to line up the system with the
desired aiming point in the room.
NOTEE:
If the screen has not been installed, this is very easy. Once the screen has been installed, dim the lights in the room
and place a flashlight at the aim point and you can see the light through the perforations of the screen.
5. Re-install the two tilt adjustment screws in the correct hole when the desired tilt adjustment has been obtained.
Left and Right Channels
Aiming of the Left and Right channels is similar to the Center, but it is often necessary to pan (toe in) the horns toward the middle of the
room.
1. Loosen the three mounting screws to allow the Mid-Hi system to rotate and tilt.
2. Aim the system with the Cine-Sight.
TIPE:
If extreme panning is required, “toe in” the LF enclosures a few degrees so the horn is not panned to extreme angles
of adjustment.
3. Tighten the three mounting screws and re-install the two tilt adjustment screws in the correct adjustment hole.
4. When all adjustments are complete make sure all screws and connections are securely tightened and the Mode switch is in the
correct position.
— Figure 6 —
Cine-Sight
Tilt Adjustment
