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Atlantic Technology IN-BOX-8 SUB Instruction Manual

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IN-BOX-8 SUB InWall Enclosure

VERY IMPORTANT NOTES:

1. The installation bracket is pre-installed in the InWall enclosure, which is designed for installation in new construc-

tion. The enclosure must be installed

before

the wall board is applied to the front of the wall studs. This enclosure is

intended only for vertical mounting. The wall must be made from 5/8 inch or thicker wallboard. This is not only

necessary for proper mounting depth behind the drivers, but to minimize distortion created by the wall itself. Any

alternative mounting arrangements that you develop are dependent on your creativity. However, be aware that they

will take considerably more work, and generally are not recommended. In any event, you are "on your own" in any

case where you deviate from these instructions.

2. This enclosure provides the correct volume to optimize the performance of the SUB 8 InWall subwoofer module.

The SUB 8 module

must

be used with this enclosure for proper operation. The enclosure also provides moderate

isolation of sound for the room adjacent to the subwoofer. However, since these are true subwoofers they generate

substantial deep bass energy and there will still be significant sound energy transmitted through the house frame-

work. This is an unavoidable consequence of mounting woofers in a wall.

3. The correct amount of acoustically absorbent material (foam) is pre-installed in the enclosure and should be left as

is within the enclosure. Please do not compact the material or add more damping material.

4. The enclosure is designed to fit in walls framed using 2" X 4" studs mounted on 16" centers, with wall board of at

least 5/8 inch thickness. With some modification to the stud framing, it can also be installed between studs mounted

on 24" centers. In all cases the front face of the enclosure must be kept flush with the front face of the studs. For studs

mounted on 24" centers it is not recommended to install the enclosure to a stud on one side only. Instead, frame out

from one or both studs to locate the enclosure solidly on both sides, wherever you desire within the stud cavity, and

then attach as detailed below. In an 8 foot tall cavity there will be 12 inches of empty space. We recommend installing

an extra 2" x 4" cap and foot above and below the enclosure which you glue and screw to the enclosure, and then

screw to the side studs.

Be sure to tell the electrician to run any AC lines above the enclosure and not to drill through

it.

It's also imperative to make sure any wires running within the wall are secured in such a way to ensure that they will

not buzz or vibrate against any part of the wall. This should be checked in every stud bay in the wall, not just those

adjacent to the woofer enclosure.

5. The SUB 8 woofer assemblies generate substantial vibrational energy and some of it will transfer into the wall. This

vibration may eventually loosen the wall board and create "nail pops". To minimize such occurrences we strongly

recommend that the wall board be screwed

and

glued to the studs (on both the front and back sides of the enclosure

and extending out beyond the actual enclosure bay at least to the next stud bay on either side of the enclosure) and

the enclosure face surfaces, using a powerful construction adhesive like Liquid Nails

TM

. Please follow all directions

when using such adhesives, particularly concerning application and ventilation.

6. Choosing the location for the subwoofer is a very important consideration. Since these are in-wall subwoofers and

can't be moved once they are installed, very careful consideration should be given to their placement. In general, the

most efficient transmission of bass energy into the room will be realized when the subwoofers are located directly

adjacent to a wall/wall/floor juncture (a corner). This will create the most reflective waves of bass sound in the room,

however it also can be the "boomiest" location in the room. Other possible location choices include:

A. Locating one woofer module in the front and one in the back of the room.

B. Locating the two woofer modules asymmetrically within the room (i.e. one in a corner, one a third of the way towards

the middle of a wall) to create different reflective (standing) wave patterns.

C. Locating one or both woofer modules on a single wall. Once again, keeping the woofers approximately one third of

the way out from a corner juncture may provide the best balance of bass impact versus boom.

Instruction Manual

Atlantic Technology

343 Vanderbilt Ave. Norwood, MA 02062 781-762-6300 atlantictechnology.com

010-1080-A