Phoenix Gold Speaker hoenix Gold Innovative Home ATC Dual Mono DM In Ceiling Speaker System User Manual

INNOVATIVE HOME  
ATC8DM  
8” 2-Way In-Ceiling Speakers  
Congratulations on your purchase of the Phoenix Gold  
Innovative Home ATC Dual Mono (DM) In-Ceiling  
Speaker System. This product is designed to reproduce  
the audio portion of your home entertainment environ-  
ment with accuracy and detail that will satisfy the most  
discriminating listener.  
Please read this Installation Manual to ensure the  
proper installation and performance of your ATC  
Series speakers.  
Preparing for your Installation  
Gather the necessary tools for your installation.  
Placement  
You will need the following tools:  
1) A Keyhole or Drywall Saw  
2) A Phillips Screwdriver  
3) Masking Tape  
4) A Pencil  
5) A Tape Measure  
Plan your speaker placement carefully. Make certain  
that electrical, plumbing and any other services will not  
interfere within the ceiling where you plan to install your  
speakers. The ATC-DM speaker can be mounted in  
walls, but are typically used in ceilings. The speaker  
should be located so that it provides even coverage  
at your listening position.  
6) A Stud Finder (recommended)  
7) Your ATC-DM speaker  
ATC-DM Summed Mono Speaker Operation  
New Construction  
The ATC-DM speaker is designed for use in areas where  
even distribution of sound is desired but stereo imaging  
is not practical because of space limitations, such as a  
bathroom or long hallway.  
If you are installing your speakers in new construction  
before the finished walls go up, Phoenix Gold Innovative  
Home offers New Construction Brackets, which provide  
a stable frame that can be fastened to the wall studs or  
ceiling joists on 16” or 24” centers. This allows the  
sheet rock or other surface covering to be installed  
and provides a template to cut the opening for the  
ATC-DM speaker.  
With a dual voice coil woofer and dual tweeters, the  
ATC-DM speaker can sum stereo amplifier channels  
into a mono audio signal. Two pairs of input terminals  
allow connection of both channels from a stereo amplifier  
to a single ATC-DM speaker. Set the switch on the back  
of the ATC-DM speaker to 16for summed mono  
operation.  
Existing Construction  
In most modern buildings ceiling joists are positioned  
on 16” centers, providing a space between the joists of  
approximately 14 3/8”. The specifications chart shows  
the appropriate cut out sizes (p. 4). Additionally, you  
should allow an extra 3/4” in all directions behind the  
ceiling surface to allow room for the screw clamps that  
mount the speaker to the ceiling to swing into position.  
Caution! Amplifier damage will occur if the ATC-DM is  
set to 8with two amplifier channels connected!  
ATC-DM Conventional Speaker Operation  
An ATC-DM speaker can be used to reproduce a single  
channel of audio by making connection to either set of  
input terminals and setting the switch on the back of the  
speaker to 8. In this configuration, both woofer voice  
coils and both tweeters are driven in parallel by the  
connected amplifier channel.  
Use a stud finder to locate the joists behind the ceiling  
surface. Also, you should now check for obstructions  
like cross bracing in front of and behind the desired  
speaker location.  
 
Next make sure that the clamps are positioned inside the  
frame of the speaker.  
Removing the ATC Series Speaker  
Should it ever become necessary to remove the ATC  
Series speaker from the ceiling, simply remove the  
grill and turn the four mounting screws counter-  
clockwise until you feel the clamps lock out of position  
in their resting flange. The speaker should easily come  
out of the wall for service or replacement.  
Correct  
Grill Removal (if installed)  
Locate a small hook tool (available at most auto parts  
stores or home improvement shops, resembling a  
dentist’s pick- a bent paper clip or stiff wire will work  
as well), hook the metal mesh of the grill near a  
corner or edge and gently pull it towards you. Only  
lift the grill 1/4" (6mm) at this location. Move the tool  
1-2" (25-50mm) and repeat until the grill can be  
removed without damaging it (Figure 5).  
Incorrect  
With the grill removed, place the speaker in the ceiling  
opening. Make sure that the speaker wire is not hanging  
against the speaker where it can vibrate and rattle as the  
speaker reproduces your audio program.  
Next, one at a time, turn each of the four screws that  
operate the clamps counter clockwise a few turns until  
you feel the clamp is loose from its resting position. Now  
turn the screw clockwise until you feel the clamp contact  
the ceiling surface.  
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Figure 5  
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4
Recommended Speaker Wire Gauges  
The resistance of the speaker wire in your installation  
can cause your speakers to perform at less than their  
optimum quality level. Excess resistance caused by  
using an undersized speaker wire can result in loss of  
detail and definition in the bass region of your audio  
program, as well as loss of dynamic range. Over  
extremely long wire runs you may even experience a  
loss of high frequency content in the audio signal.  
Tighten all four of the mounting screws in the same  
manner until the speaker is properly aligned and held  
tight to the ceiling surface. Caution: Do not over tighten!  
Painting the Speaker  
A paint shield is included in each ATC-DM speaker  
package. Place the paint shield inside the frame to  
protect the speaker. You can now safely paint the  
speaker frame to match your wall surface if you desire.  
To prevent sonic degradation in your ATC Series  
speaker installation, total speaker wire resistance  
should be kept below 0.5 ohms. The following table  
lists recommended speaker wire gauge versus wire  
run length.  
When painting the grill caution should be taken to  
ensure that paint does not clog or congest the  
perforated openings in the grill. This would prevent  
proper operation of the grill by restricting the airflow  
from the individual drivers in the speaker.  
50’ or less - 16 Gauge 2-Cond. CL3 Rated  
50’ - 150’ - 12 Gauge 2-Cond. CL3 Rated  
150’ - 200’ - 10 Gauge 2-Cond. CL3 Rated  
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ATC8DM  
Specifications  
Dual Voice Coil Woofer  
Tweeters  
Frequency Response  
Impedance  
8” Mica Filled Poly Cone with Butyl Rubber Surround  
Dual 19mm ferrofluid Cooled  
38Hz to 22kHz  
16 ohms (mono application) / 8 ohms (stereo application)  
90dB, 2.83v @ 1m  
Sensitivity  
Power Capacity  
Outer Dimension  
Cut Out Dimension  
Mounting depth  
New Construction Bracket  
10 to 175 Watts  
10.75” (273mm) diameter  
9.5” (241mm) diameter  
3.63” (92mm)  
Order Part Number: NCBC8  
Two Year Limited Warranty  
Phoenix Gold Innovative Home, a division of Peak Audio Group, warrants this product against defects in materials and  
workmanship for a limited period of time. For a period of two (2) years from date of original purchase, we  
will repair or replace the product, at our option, without charge for parts. Customer must pay for all labor  
charges associated with the removal and re-installation of speakers for the limited period and all parts and  
labor charges after the limited warranty period expires. The limited warranty period for factory refurbished  
products expires after ninety (90) days from date of original purchase. This limited warranty applies only to  
purchases from authorized Phoenix Gold Innovative Home Retailers or Distributors. This limited warranty is  
extended only to the original purchaser and is valid only to consumers in the United States.  
Consumers are required to provide a copy of the original sales invoice from an authorized Phoenix Gold  
Innovative Home Retailer or Distributor when making a claim against this limited warranty. This limited  
warranty only covers failures due to defects in materials or workmanship that occur during normal use. It  
does not cover failures resulting from accident, fire, flood, misuse, abuse, neglect, mishandling,  
misapplication, alteration, faulty installation, modification, service by anyone other than Phoenix Gold  
Innovative Home, or damage that is attributable to Acts of God. It does not cover costs of transportation to  
Phoenix Gold Innovative Home or damage in transit. The customer should return their defective product,  
freight prepaid and insured, to Phoenix Gold Innovative Home only after receiving a Return Authorization.  
Repair or replacement under the terms of this warranty does not extend the term of this warranty. Should a  
product prove to be defective in workmanship or material, the consumer's sole remedies will be repair or  
replacement as provided under the terms of this warranty. If the defective product is discontinued Phoenix  
Gold Innovative Home may replace the product with an equivalent or superior product at its option. Any cost  
of re-installation or repair of wall or ceiling surface is the sole responsibility of the customer and that cost  
shall not be the responsibility of Phoenix Gold Innovative Home. Under no circumstances shall Phoenix  
Gold Innovative Home be liable for loss or damage, direct, consequential or incidental, arising out of the  
use of or inability to use the product. There are no express warranties other than described above.  
INNOVATIVE HOME  
13970 SW 72nd Avenue Portland, Oregon 97223  
503.914.4688 Fax: 503.746.5224 Support: 877.715.5439  
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