Atlantic Technology IW-28 SUB Instruction Manual Download Page 6

 IW-28 SUB In-Wall Subwoofer 

Installing the Speaker Assembly

The clamping mecha-
nism accommodates wall 
material from ½ to 1½ 
inches (13 to 38 mm) in 
thickness. There must be 
a minimum depth behind 
the wall face of 3-5⁄8” (92 
mm). As noted earlier, 
be sure to keep the edges 
of the cutout at least 1½ 
inches (38mm) away from 
any stud or obstruction, 
as the rotating clamps will 
not operate properly if you 
don’t. There are holes in the 
baffle providing access to 
the rotating clamp screws 
(See fig left). There is no 
need to disassemble the 
speaker for installation. 

Insert the speaker assembly into the cutout and using a level carefully align 
the speaker so it is level. Loosen the mounting screws ½  turn, then tighten 
them, which will cause the attached clamps to unlock, rotate and position 
themselves properly behind the wall.
Continue to tighten until the frame is snug in the wall. You want the bezel to 
conform to the wall surface, and the frame not to rattle from the speaker’s 
vibration, 

but be very careful not to over tighten the screws.

Painting the Speaker Assembly

The white plastic frame and metal 
grille may be left as is, or painted to 
match your décor. You can paint the 
frame before or after it is installed 
in the wall. You will need to remove 
the baffle from the frame before 
painting.  Spray painting (using 
slightly thinned paint) is the best 
method to use for painting the 
grille. 

Be sure to remove the 

scrim cloth before painting the 
grille

. Start at one corner and gen-

tly peel the scrim from the grill.  
After painting the grille, use air 
pressure to “blow out” any grille 

holes that are filled in with paint. When the grille is dry, re-apply the scrim 
cloth. You may need to use a light coat of low tack spray adhesive to hold 
the scrim in place.
 

Installation

•  If this is new construction, we strongly recommend using 

5

8

” or ¾” 

drywall. It’s heavier and more expensive than ½” material, but it’s far, 
far superior in terms of acoustic/mechanical integrity and rigidity. We 
also strongly recommend that the drywall be screwed to the studs every 
6 inches or so, instead of the more common practice of nailing it every 
12-18”. Use screws for at least a full stud bay on either side of where the 
IW-28 SUB will be mounted.

Cutting the Opening

After determining the best location for the speaker as outlined earlier, use a 
level with the template to mark out the hole. Then using care, cut the proper 
size hole. (11 1/8” x 20 3/8”)

WARNING: 

Exercise extreme care before making any wall cuts to 

ensure that you will not cut through any wires, pipes, or other items 
that may be in the wall. You may sometimes, but not always, be able 
to determine the approximate location of wires and pipes by looking 
at the locations of nearby outlets and plumbing. But their location or 
absence is never an assurance that there is not something within the 
wall cavity.

11 

1

8

” 

(283mm)

20 

3

8

” 

(518mm)

IWTS-30 LCR

Mounting Template

Mount frame as shown, 

with IR knockout in 
upper-right corner. 

Remove scrim before 

painting grille.

IW-30 LCR & IW-28 SUB  

Mounting Template

Summary of Contents for IW-28 SUB

Page 1: ...Instruction Manual IW 28 SUB High Performance Thin Bezel In Wall Subwoofer ...

Page 2: ...rton packingpieces andplasticbagsthatcame with your speakers They will be useful in case you move or have to ship your loudspeaker for any reason Description The IW 28 SUB is a thin bezel in wall passive subwoofer that has dual 8 long throw woofers a reinforced MDF baffle and a switchable Low Passcrossoverthatwillprovideyouyearsof enjoyment TheIW 28SUBis designedtobeusedwitheitheramonoblockamplifi...

Page 3: ...ng two IW 28 SUB modules follow the same advice locate them asymmetrically within the room and asymmetrically with regard to each other i e one near a corner one towards the middle of a wall to smooth out the bass and minimize random standing wave patterns see fig 2 Figure 2 Dual Sub Placement Connection Considerations Choosing how you connect the IW 28 SUB is dependent upon your appli cation InaH...

Page 4: ...ng on the amplifier be certain that no stray wire strands are touching across any terminals as this might damage your amplifier Home Theater with a Monoblock Amplifier Connection Leaving the jumpers in place connect the speaker wires from the Mono block amplifier to one black terminal and one red terminal on the IW 28 SUB see fig 3 2 Channel Passive Subwoofer Connection Remove the jumpers from the...

Page 5: ...studs to ensure that the clamps have adequate room to rotate into position A stud or other obstruction that s too close will stop them from properly doing their job Installation of the IW 28 SUB Removing and Installing the Grille Remove the grille from the speaker using the enclosed tool an awl or the point of a drywall screw in a grille opening near one of the grille corners Slowlyprythegrilleawa...

Page 6: ...the scrim cloth before painting the grille Startatonecornerandgen tly peel the scrim from the grill After painting the grille use air pressure to blow out any grille holesthatarefilledinwithpaint Whenthegrilleisdry re applythescrim cloth You may need to use a light coat of low tack spray adhesive to hold the scrim in place Installation If this is new construction we strongly recommend using 5 8 or...

Page 7: ...coils Frequency Response 38 200 Hz 3dB passive response Recommended Amplifier Power 30 200 Watts RMS Low pass Filter Frequency 200 Hz Sensitivity 89dB Impedance Each individual woofer 8 ohm paralleled 4 ohms IMPORTANT NOTE The power recommendation for this speaker assumes that you will not operate your amplifier receiver in a way that produces distortion Even rugged speakers like ours can be dam a...

Page 8: ...criteria stated on that application to receive an Extended ServiceAgreementthatcoversyourAtlanticTechnologyproductswellbeyondthestandard90 dayWarranty ToobtainWarrantyservice PleasecontactyourlocalAtlanticTechnologyresellertodeter mineif theyareanAuthorizedRepairCenterforAtlanticTechnologyproducts Youwillneed your original Invoice or Bill of Sale to prove Warranty eligibility If your local dealer ...

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