Atlantic Technology IWTS-8 SUB Installation Instruction

IWTS-8 SUB Woofer Module

For use with Atlantic Technology SA 350 Mono or
SA 700 Dual Mono Subwoofer Amplifier Only

Installation Instructions

IMPORTANT NOTE: The 8 SUB woofer module must be used only with
its matching Atlantic Technology amplifier (SA 350 or SA 700). The 8 SUB
woofer module also must be installed and used only within its dedicated
in-wall enclosure (IN-BOX-8 SUB).

Please take a few moments to read these instructions. They're intended
not only to tell you how to mount the speakers, but how to get the best
performance from them. We always recommend a professional be involved
in the installation of InWall Theater System speakers, if at all possible.

Important Considerations
Before Installation

Mounting and Vibration Concerns

to mount into its dedicated in-wall enclosure which must be mounted
into the wall before the sheet rock is applied. The 8 SUB module re­quires 5/8 inch or thicker sheet rock to mount properly. The most criti-

8 SUB Woofer
Module Installation
Exploded View

The 8 SUB module is designed

8 SUB Enclosure

cal aspect of installing the woofer module is to ensure that there are no
air leaks around the unit and that the speaker wires behind the assem­bly can’t vibrate against any internal part of the assembly. Take your
time when installing the foam gaskets and the module and also use
great care when attaching and locating the wires while you are mount­ing the module in the enclosure.

Recommended Wire Sizes

SUB module are very powerful. In addition it is quite likely that there
will be a significant distance between the amplifier and the woofers,
necessitating long wire runs. And the longer the wire run, the heavier
the wire should be. Therefore, we strongly recommend that you use high
quality speaker wire between the subwoofer amplifier and the 8 SUB
module. Please use at least 16 gauge for lengths up to 30 feet. Beyond 30
feet please use larger wire; 14 gauge up to 60 feet, 12 gauge up to 100
feet.) Remember that the wire increases in size as the gauge number
decreases. If you're in doubt, remember that it never hurts to get the
next heavier grade of wire.

The amplifiers that accompany the 8

Foam Sealing Gasket

IWTS-8 SUB Woofer

Grille

Sheetrock

2x4 or 2x6 Stud Wall

Hollow Core Foam

InWall Enclosure/Woofer Module Installation

Removing and Installing the Grille

The woofer assembly is very heavy. Use care and caution when han­dling it and mounting it in the in-wall enclosure.

Before attempting to mount the woofer module you must first

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apply the supplied 3/4 inch self-adhesive foam sealing gasket
to the rear side of the 8 SUB trim ring (Fig. ?). Remove the 8
SUB assembly from its box and place it face down on a flat
surface, being careful not to let anything damage the drivers.

Begin applying the foam gasket by peeling back approximately

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2 inches of the adhesive’s protective paper cover. Starting in
the middle of one side of the back of the trim ring apply the
adhesive side to the trim ring being careful to keep the foam
at least 1/8 inch away from the outside edge. Continue apply­ing the gasket around the trim ring by stripping away the pro­tective paper and pressing the adhesive side of the foam
against the trim ring. At the corners simply continue around
the trim (do not cut the foam in any corner) being careful not
to let the foam bunch up enough to hold the frame off the
wall. Be sure that the entire trim frame is gasketed with the
foam. You can cut the foam on the straight sections if neces­sary, but it must overlap any gaps by 1/8 inch to ensure an air
tight seal. Leave no gaps or openings as there will be serious
(and clearly audible) air leaks if you do.

After the foam has been applied locate the speaker wire that

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you previously ran into the in-wall speaker enclosure. Packed
in the 8 SUB box is an18 inch piece of hollow core round foam.
Cut this foam to the approximate length of the wire, leaving
enough wire exposed to connect to the speaker. Run the
speaker feed wire through this foam and tuck it into the in­wall enclosure in such a manner that it will sit within the en­closure and around the woofer magnets when the woofers are
installed in the enclosure. The reason for the foam is to elimi­nate any possibility that the feed wire will buzz or vibrate in­side the enclosure.

Leave enough wire sticking out of the foam to connect to the

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8 SUB input connectors, but not so much as to allow the wire
to vibrate against any part of the enclosure or woofer assem­bly.

Strip about 1/2 inch of insulation from the connecting wires.

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Connect them to the appropriate terminal on the 8 SUB mod­ule being careful to observe polarity (positive to the red ter­minal, negative to the black terminal).

Place the 8 SUB module into the enclosure, aligning the screw

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openings with the screw holes in the rear mounting assembly
in the in-wall enclosure. Be sure that the round foam wire in­sulation fits in between the magnet assemblies. If it doesn’t
you may want to trim the wire/foam to make sure it does. Use
the included 3 inch #8 self-tapping screws to attach the two
assemblies together.

Tighten the mounting screws, which will cause the bezel and

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the rear clamping assembly to capture the wall board between
themselves. The bezel will conform to the wall board as it
should, but BE VERY CAREFUL NOT TO OVERTIGHTEN THE
SCREWS.

The Grille is packed separately in the box with the 8 SUB module.
This grille must fit very snuggly, as the pressure and vibration cre­ated by the 8 SUB module is quite capable of shaking the grille off
the assembly. There is a specific method of installation that must

be followed in order to properly insert the grille.

After the woofer assembly has been installed and tested for air leaks
install the grille by pressing it carefully into the side of the in-wall
frame and then slowly “rocking” it towards the opposite side making
sure that the top and bottom fit as you go along. Attempting to install

the grille by putting the top or bottom in first will generally not work.

Since it’s designed to fit snugly, please take your time and use care
when installing the grille. If the grill is very difficult to install, try
backing out the mounting screws just a bit to reduce warping of the
assembly. However, be sure that the trim ring remains tight against
the wall board.

Remove the grille from the speaker using an awl or the point of a
drywall screw in a grille opening near one of the grille corners. Slowly
pry the grille out, being careful not to damage the speaker’s frame or
its finish.

Painting the Speaker Assembly

The white plastic frame of the speaker baffle assembly and the metal
grille may be left as is or painted to match your decor. You can paint
the frame before or after it is installed in the wall. Use the included
paint shield to protect against getting any paint on the front of the
speaker and only use latex (water based) paints. Spray painting (us­ing paint thinned 4 to 1) is the best method to use for painting the
grille. Multiple light coats are much better than a single heavy coat.
Be sure, no matter what method you use to paint the grille, that you
use air pressure to "blow out" any grille holes that become covered
over with paint.

010-1082

343 Vanderbilt Avenue Norwood, MA 02062

[phone] www.atlantictechnology.com