NX-Si8522 8˝ Dual Voice Coil
Ceiling-Mount Speaker System
OWNER’S MANUAL
Congratulations on choosing NXG
Signature Series Loudspeakers.
Like all NXG products, great care
has been taken in their design.
Their combination of advanced
engineering and state-of-the-art
materials will provide you with
years of listening pleasure, while
Black grille
adhesive
blending smoothly into your home’s
decor. Before you get started, it is a
good idea to identify all the parts
FIG. 1
Cutout
Template
and hardware (See Fig. 1).
Placing Your Ceiling Speaker
for Dual Channel Stereo Operation
Placement can make all the difference in how your speaker will
sound, and how easy it will be to install. Carefully consider where
your speaker should be positioned. For optimum dual channel
stereo performance, the speaker should be mounted as close as
possible to the center of the main listening area as shown in Fig. 2
position 1. (Note: Set switch to 8 ohm mode, and connect left and
right channels from your receiver to the two sets of input terminals
on the speaker, as shown in Fig. 4B.)
For Rear Center Surround
or Single Channel Surround Operation
For surround rear center, mount the speaker as shown in Fig. 2
position 2. (Note: Set switch to 8 ohm mode, and connect the two
rear channel outputs from your receiver to the two sets of input
terminals on the speaker, as shown in Fig. 4B.) Avoid mounting the
speaker in stud cavities containing electrical wiring, heating ducts,
water pipes, etc. Make sure the wall or ceiling materials are sturdy
enough to support the weight of the speaker. Since the NX-Si8522
is also designed to be used as a single channel speaker with wide
dispersion, it makes a superb surround sound rear or side speaker.
You can mount the unit in the ceiling slightly in front of or behind
the listening position, left and right, as shown in Fig. 2 positions 3
and 4. (Note: Set switch to 4 ohm mode, and connect ONLY one
channel from your receiver to only one set of input terminals on
the speaker, as shown in Fig. 4A.)
Tweeter Level Adjustment (Fig. 1)
The tweeter level switch allows you to tailor the speakers’ frequency
response to better match the room’s acoustics. As an example, if
a room has a hardwood floor, which makes it acoustically brighter
sounding, you may want to adjust the tweeter level control to
compensate. The nominal factory setting with the switch set to 0
represents a flat acoustic response. Switching the control to –3
will reduce the high frequency output for bright sounding reflective
rooms. You can experiment with the level to find the sound that’s
most pleasing to you in your particular listening environment.
Painting
Mask
Position 2
for rear center
(two channel)
surround
Position 3
Direct/Diffuse Operating Mode Switch
Tweeter Level Switch
Speaker with self-contained
mounting clamps
Position 1
Aluminum grille with
foam inner grille cover
FIG. 2
Position 1 for
two channel
(stereo sound)
Position 2
Position 3 or 4
for single channel
surround sound.
Direct Diffuse Operating Mode Control (Fig. 1)
Set the switch in the “direct” position for normal stereo, dual-channel (right/left) operation.
Set the switch in the “diffuse” position only for home theater (single channel) surround operation. With the switch set in the diffuse mode the NX-Si8522 will create a sound null on axis
and produce the illusion of a wider sound field, which is desirable for surround operation.
Position 4
Speaker Installation In Existing Construction (Fig. 3)
Once you have selected the location for your speakers, you are ready to install them. You will need the following:
• Stud Finder • Drill & Drill Bits • Wire Cutter/Strippers
• Pencil • Utility Knife or Drywall Saw • Small Level
• Masking Tape • Phillips Screwdriver • Speaker Wire
NXG recommends the use of a minimum of 16-gauge wire. For wire options consult your retailer or custom audio contractor.
1. NXG Signature Series Speakers are designed to be installed in the wall or ceiling area between studs. Using a stud finder, make sure you
are between two studs. Using the supplied template, trace around the outside with a pencil.
2. Cut the hole using your drywall saw. You may want to start with a small hole in the center of the outline. This will allow you to check for
any obstructions that may exist behind the desired location. CAUTION: Be certain electrical wiring, water pipes or heating ducts do not
interfere in the planned installation areas prior to drilling or cutting the wall. See Fig. 3.
3. Run speaker wire from your amplifier, volume control or speaker switching device to the speaker location.
4. Carefully remove the grille and inner grille backing. (Note: The open cell foam inner grille backing is designed to hide speaker components
from view and may be removed if desired.) If you like the standard white finish of your NXG speakers, skip to step 5, but if if you want your
speakers to blend in with a colored wall or ceiling, now is the time to paint your speaker’s outer frame and perforated grille. (Remove the
foam inner grille backing and put it aside in a clean and dust free area for later reinstallation if desired.) The speaker’s outer surface will accept
ordinary latex wall paint or aerosol spray paint. Because the speaker baffle surface behind the grille should remain unpainted, you will need to
cover this area with the supplied paint mask. Cover the speaker’s interior black surface, woofer and tweeters. Paint the outer speaker frame and
grille separately. (Grille painting hint: Use a paint roller that is nearly out of paint to first paint the inside of the grille, then the outside. This will
avoid paint filling the grille perforations.)
5. Attach the wires to the input terminals
(right and left) on the rear of the speaker
for stereo operation and set the switch in
Fig. 4B to the “8 ohm” mode. For single
channel operation you can attach one
set of wires to either set of input connectors and set the switch in Fig. 4A to
the “4 ohm” mode. Remember to maintain proper polarity with the amplifier by
attaching the positive (+) lead to the red
terminal and the negative (-) lead to the
black terminal.
6. See Figs. 4A and 4B on reverse.
With the speaker wire(s) attached to the
speaker, slide the speaker up inside the
cut-out hole. Center the speaker in the
cut-out hole and turn the four locking
screws clockwise until the speaker is
drawn up snugly to the wall board from
behind, clamping the speaker in place.
Try to tighten each screw equally.
Replace the speaker grill by gently
pressing it into place.
FIG. 3
New Construction
1. Determine speaker location and mark it on your plans for future reference.
2. If possible, run speaker wires after HVAC and electrical wiring is in place.
3. Secure speaker wires in place along the run with insulated staples only and be careful not to pierce the wire’s insulation. Allow a bit of
slack for expansion of building materials.
4. Needless to say, the actual speaker should not be installed until the wall board is in place. In the meantime, leave several feet of wire
coiled up and secured at the back side of the mounting hole.
5. To complete the installation follow steps 2 through 6 above.
(Continued on reverse)
FIG. 4A
For single
channel
operation,
set switch to
4 ohm mode
NX-Si8522 Specifications
• Tweeters: Two 1˝ (25 mm) fluid-cooled, laminated teteron dome
• Woofer: 8˝ (203 mm) dual voice coil, titian aluminum-anodized
graphite-filled injection-molded cone with rubber surround
• Crossover: Linkwitz-Riley 12dB per octave, gold input terminals
• Three Switches: 1.) 4 ohm/8 ohm selectable for use as dual input
single location stereo speaker, or single input direct/diffuse rear
in-ceiling home theater surround speaker, 2.) tweeter level, and
3.) direct diffuse
• Recommended Amplifier Power: 10 W to 150 W
• Impedance: 8 ohms in two-channel (stereo) mode, 4 ohms
mono mode
• Frequency Response: 35Hz-21kHz
• Sensitivity: 88dB
• Baffle: Reduced resonance, minimum diffraction, polycarbonate
with dog ear type mounting system
• Grille: Corrosion-resistant powder-coated aluminum
• Total Diameter: 103/4˝
• Depth: 41/4˝ (mounted in 1/2˝ drywall)
• Retrofit Cutout Diameter: 9 5/8˝
• Optional new construction brackets: NX-RK8C
4 ohm /8 ohm
switch
FIG. 4B
For two
channel
operation,
set switch to
8 ohm mode
4 ohm /8 ohm
switch
Operational Check
After making all connections it’s a good idea to make sure everything
is working properly. Tu rn on your surround or stereo system making
sure the volume control is turned down and that the balance control
is in the center position. Activate a musical or movie source. Gently
turn up the volume, you should hear sound coming from your new
NXG speaker. If no sound is heard from the speaker, switch off the
system immediately and check for open or loose connections, wrong
polarity or shorts, or proper source selection.
NXG Speakers Three-Year Limited Warranty
If the NXG speaker system proves to be defective in workmanship or
materials within three years from the date of the original customer’s
purchase, we will, at our option, repair or replace the defective product.
Limitation of Implied Warranties
Any implied warranties, including warranties of merchantability and
fitness for a particular purpose, are limited in duration to the length
of this warranty.
Exclusion of Certain Damages
NXG’s liability for any defective product is limited to repair or
replacement of the product at our option. NXG shall not be liable
for incidental or consequential damages of any kind or character
because of product defects. Some states do not allow limitations on
how long an implied warranty lasts and/or do not allow the exclusion
or limitation of incidental or consequential damages, so the above
limitations and exclusions may not apply.
This Warranty Does Not Cover:
• Damage caused by abuse, accident, misuse, negligence, or
improper operation.
• Any product whose serial number has been altered, defaced,
or removed.
• Products that have been altered or modified.
• Normal wear and maintenance.
• Damages caused by shipping. (All claims for shipping damage
must be made with the carrier.)
Warranty Service
Warranty service must be performed by an authorized service center,
usually a NXG speaker systems dealer or its authorized agent. You
may obtain a list of authorized service centers by contacting NXG. All
warranty repairs must be accompanied by the original bill of sales. No
other document is acceptable or is required. This warranty gives you
specific legal rights, and you may also have other rights which vary
from state to state. NXG reserves the right to revise speaker system
specifications without notice.
16648 North 94th Street
Scottsdale, AZ 85260
1-800-733-0008
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