Kramer Electronics SPK-C411(PAIR) - Manual (Page 9)

SPK-C411 / SPK-C412 - Your Closed-back Ceiling Speakers 5
5
Each Closed-back Ceiling speaker is supported by a C-ring and two tile rails. The tile
rails prevent the speakers from falling if the tile itself comes out or falls apart, as
their ends catch onto the T-grid. When mounting onto the ceiling tiles, use both
supports. When mounting onto a sheetrock ceiling, the C-ring alone is used to
reinforce the ceiling material.
Be sure that the tiles can support the speaker. Smaller sized tiles or
fiberglass-type tiles cannot support the weight of the speakers.
When this is the case, the speakers will need additional support.
Figure 3 shows a schematic diagram of the Closed-back Ceiling speaker:
Figure 3: Closed-back Ceiling Speaker Schematic Diagram
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