7.If you are cutting into a plaster ceiling, use masking tape to outline your penciled circle and use a razor to score the plaster down to the lath beneath. Then use a chisel to remove all of the plaster within the taped outline. To actually cut the lath, consider the following two professional methods:
•Use a saber saw with a metal cutting blade for the quickest cut. However, saw- ing lath with a saber saw can easily vibrate plaster off the ceiling in a completely distant location, thereby creating more patchwork.
•If you have the patience, use a pair of tin snips to slowly nip away at the lath instead. There is little risk with this method – it is just more time consuming.
FINISHING THE INSTALLATION
INSTALLING THE SPEAKERS
1.If possible, lay a batten of insulation into each ceiling cavity. Remember to use equal amounts of insulation for each speaker.
2.At each speaker, separate the speaker wire so that at least 2 inches of each conduc- tor are free. Strip away 1/4 inch of insulation from each speaker wire and insert the appropriate wire into each
NOTE: OBSERVE CORRECT POLARITY: POSITIVE (+) GOES INTO THE RED TERMINAL AND NEGATIVE
3.Locate the four clamps or mounting dogs which will hold each speaker in place, along with their
NOTE: THE TIGHTENING SCREWS WILL BE EASIER TO TURN IF YOU “PRIME” THEM FIRST.
IMPORTANT: DO NOT OVER TIGHTEN THESE SCREWS! OVER TIGHTENING THE CLAMPS MAY MAKE THE GRILLE DIFFICULT TO INSTALL.
Figure 17. Tightening the clamps or mounting dogs.
4.Perform step 2 at the amplifier end. Make sure each speaker is connected correctly according to polarity and channel use.
5.Turn on the surround receiver and calibrate all speakers in the surround system ac- cording to the receiver manufacturer’s instructions.
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