Niles Audio CM4PR Manuale Utente

Figure 3. Securing the speaker wire with 

a wire tie.

Figure 5. Inserting the loudspeaker into 

the opening hole.

Mounting clamps 

require 1” clearance 

to the sides of the 

hole opening

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  7.    The speaker has black and red 

spring-loaded connectors attached 
to the Rear Wave Control enclosure 
(

Figure 3). Black is for the negative 

(–) wire and red for the positive (+). 
It is important to observe correct 
wiring polarity. If you have wire other 
than black and red, make sure you 
connect it the same on the amplifier 
end as the speaker end. Failure 
to do so will adversely affect the 
loudspeakers’ performance. Supports 
are provided to secure the speaker 
wire with wire ties. (not included)

  8.    A safety wire anchor is provided on 

the Rear Wave Control enclosure 
should you be required to secure the 
loudspeaker assembly to a roof beam 
or rafter (

Figure 4). 

  9.    Once the speaker wires and safety 

wire are connected, raise the 
mounting clips to a vertical position 
as shown in Figure 5 and carefully 
slide the loudspeaker with 
attached Rear Wave Control 
enclosure into the opening 
hole (

Figure 5). CM4PR 

loudspeakers feature spring 
loaded mounting clamps that 
allow the speaker to remain flush 
with the ceiling To remove a 
CM4PR from the ceiling, simply 
grasp the bezel edge and pull 
on the speaker slowly.  This will 
cause the mounting clamps 
to disengage and free the 
loudspeaker. 

Figure 4. Attaching a safety wire.

It is often easier to lay the speakers out on the fl oor and then transfer the locations 
to the ceiling with a laser plumb bob. If you are using new construction brackets, 
place string across the centers of the bracket to provide a way to align the bracket 
to the laser. Remember, you will need 1” to the sides of the mounting hole for the 
mounting clamps to secure the speaker to the drywall and you will need at least 5” 
of clearance to one side within the opening for the CM4PR’s Rear Wave Enclosure.

  1.    Once you have determined a possible position for the hole cutout, drill a 

1/8” pilot hole just barely through the ceiling (1/2” to 5/8” deep in most 
homes) in the center of your proposed loudspeaker location.

 

  2.    Cut a foot-long piece of coat hanger. Bend the wire (creating a right angle) 

leaving 3-5/16” at one end (this allows for the extra width of the Rear Wave 
Enclosure). Poke the “L-shaped” wire into the pilot hole and turn it in a 
complete circle and move it into the ceiling cavity to make sure you have 
approximately 3-5/16” of depth within the ceiling. If the wire’s movement is 
obstructed by anything, fill the hole(s) with spackle and try another location 
(If there is any risk of uninsulated electrical connections within the ceiling 
area, use insulating gloves or other materials or consult with an installation 
professional before proceeding).

  3.     If the coat hanger moves freely in a complete circle and you have sufficient 

depth, tape the template to the ceiling and proceed to layout the other 
speakers. Once you are comfortable with all speaker locations, use a pencil 
to lightly outline the circular template.

  4.    Drill the starting point of your cut with a 1/4” bit.
  5.    If you are cutting drywall, use a sheetrock or keyhole saw. Cut the hole with 

the saw at a 45° angle. That way the drywall section can be replaced cleanly 
if there is an unseen obstruction behind the wall.

 

  6.    Prep the speaker wire by stripping 1/4”-1/2” from each speaker lead. Twist 

the strands or tin the leads with solder to ensure there are no stray strands 
that could short and possibly harm the amplifier.

(CoNTINued oN NeXT pAGe)

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8/17/11   10:11 PM