Dayton Audio CS820C 产品宣传页

fit loosely and the speaker frame should cover the edges of 
the hole. Repeat these steps for the other speaker.

Don’t compromise sound quality by using thin, inexpensive 
speaker wire, we recommend using a high quality oxygen 
free copper speaker cable. For runs less than 50 feet, 
we recommend 16 gauge cable, and for longer runs we 
recommend 14 gauge or larger cable. For installations with 
in-room stereo volume controls we recommend using a four 
conductor speaker wire from receiver to volume controls. Most 
municipalities require the use of CL2 rated speaker cable for 
installation in walls and ceilings. Leave enough speaker cable so 
you can stand comfortably on the floor or ladder while connecting 
the speaker cable to the speakers.

Remove about 8" of the cable jacket to expose the inner 
conductors. Strip 1/4" of insulation from each conductor and 
connect to the speaker terminals. When connecting the wires 
to the speakers, be sure to observe proper polarity. Most CL2 
rated speaker cable will have red and black conductors so you will 
connect the red wire to the red speaker terminal and the black 
wire to the black speaker terminal.

For high impedance (70 V) applications attach the positive lead 
from the receiver to the wattage lead on 70 V transformer to be 
used (i.e. 2.5W) and the negative lead from the receiver to the 
to the common ground lead (C) on 70 V transformer. For low 
impedance (8 ohm) applications connect the positive lead from 
the receiver to the RED positive terminal on the speaker 
and the negative lead from the receiver to the BLACK 
negative terminal on the speaker. Note: To avoid damage to 
the speaker, be sure to switch off the amplifier power when 
changing the input.

To install the speakers into the ceiling, remove the grills, 
this will give you access to the mounting screws. Turn 
the mounting clamps so they are positioned as in the 
illustration, this will allow the speakers to clear the hole for 
installation. Insert the speaker into the hole, and tighten the mounting screws. As you turn 
each screw, the mounting clamps will rotate outward to engage ceiling material. 

If you choose to paint the speaker grill and/or frame we have provided a “Paint Masking Tem-
plate” to cover the woofer/tweeter assembly and help prevent possible damage. 

paint the frame and grill assembly together. The grill should always be painted separately.  
Do not apply heavy coats of paint that might block the perforations in the grill.

9. Troubleshooting
 

Should your speakers not work properly, check the following:

   

●

  Most stereo receivers have an A/B speaker selector switch. Make certain that 

this switch is in the proper position.

   

●

  Mute feature is activated.

●

  Long-throw polypropylene cone woofers with rubber surround

●

  Coaxially mounted 1" Mylar tweeter

●

  Optimized crossover 

1.  Parts Inventory
 

Your speaker kit should include the following:

  

●

  1 pair of Dayton Audio Contractor Series Ceiling Speakers with Grills

  

●

  1 speaker installation / paint masking template

  

 

The Dayton Audio speakers can be installed with the following simple tools:

  

●

 Pencil 

●

  #2 Phillips screwdriver

  

●

  Masking tape 

●

  Wire cutters & wire stripper/crimp tool

  

●

  Drill & drill bits 

●

  Stud finder**

  

●

  Utility knife or wallboard saw*

 

* Recommended for use if installing in plaster walls.

 

** Optional tools to make the installation easier.

To achieve the best performance from your Dayton Audio speakers, it is important to carefully 
select the location for installation. Your ceiling speakers should be installed 5 to 8 feet apart to 
ensure proper stereo imaging. Mount each speaker the same distance from the intersecting 
walls to maintain a uniform look. Keep the speakers at least 2 feet away from the corners of 
the room to avoid overemphasized bass reproduction.

Once you have selected the location for your speakers, you are ready to install them.

Ceiling speakers are designed to be mounted in the ceiling between the joists or trusses. 
Once you have selected the location, check to be sure you are between the joists or truss. 
One method is to tap on the ceiling, you will hear a hollow sound when between two joists or 
trusses and a sharper, more solid sound when right on top of, or close to a joist or truss.

An easier, more accurate method for finding the location of joists or trusses is to use a  
stud finder.

The Contractor Series Ceiling speakers include a two-part template. Remove the center circle 
from the template, this is a paint masking template to use if you choose to paint the speaker 
frames and grill. The outer ring is used to mark the cut-out for the speakers.

Once you have established that your chosen location is between two joists or trusses, and 
that there are no obstructions in the ceiling, tape your speaker template to the ceiling and 
lightly trace around the inside edge with a pencil and drill a 1" hole in the center of the 
template outline. Next, use a piece of stiff wire (a coat hanger works well), bend it 8" from the 
end at a 90 degree angle. Insert the bent part of the coat hanger into the 1" hole and rotate 
the wire in a complete circle to check for obstructions. If the wire hits a stud on either side, 
reposition your template to the left or right and mark the outline again. Keep the pilot hole 
within the template outline.

If the ceiling is made of drywall, simply cut the marked area with your utility knife or drywall 
saw. If the ceiling is made of plaster, you should use a saw with a higher tooth count to 
reduce the chance of breaking the plaster. Test fit the speaker in the hole, the speaker should