Atlantic Technology IW-28 SUB Instruction Manual
IW-28 SUB
High Performance
Thin Bezel
In-Wall Subwoofer
Instruction Manual
2
Safety Precautions
Safety Precautions
IW-28 SUB In-Wall Subwoofer
Table of Contents
2 Model IW-28 SUB
2 Unpacking the Speaker
2 Description
3 Location Considerations
3 Connection Considerations
4 Connecting the IW-28 SUB to Your System
4 Speaker Connection
4 Home Theater with a Monoblock Amplifier Connection
4 2-Channel – Passive Subwoofer Connection
5 Distributed Audio Connection
5 Mounting the IW-28 SUB
5 Installation of the IW-28 SUB
5 Removing and Installing the Grille
5 Treating the Wall Cavity
6 Cutting the Opening
6 Installing the Speaker Assembly
6 Painting the Speaker Assembly
7 Front Panel Controls
7 Low-Pass Control
7 IR Knockout
7 Specifications
Model IW-28 SUB
In-Wall Thin Bezel Subwoofer
Thank you for purchasing Atlantic Technology products. Our speaker systems have been designed to deliver exceptional sound and value. We hope
you like what you hear, and are happy with your decision to buy them.
Please take a few moments to read these instructions. They’re intended not
only to tell you how to mount the speaker, but how to get the best performance from it.
Unpacking the Speaker
Use care when unpacking the speaker. Remember to save all packing
materials until you are certain that the speaker has suffered no damage in
shipment. If you find such damage, either visible or internal, contact your
dealer immediately.
If you can do so, save the carton, packing pieces, and plastic bags that came
with your speakers. They will be useful in case you move or have to ship
your loudspeaker for any reason.
For Future Reference
Record your serial numbers and date of purchase here:
Model Number
Serial Number
Date of Purchase
The serial number is found on the back panel.
Description
The IW-28 SUB is a thin bezel, in-wall, passive subwoofer that has dual
8” long throw woofers, a ¾” reinforced MDF baffle and a switchable LowPass crossover that will provide you years of enjoyment. The IW-28 SUB is
designed to be used with either a monoblock amplifier, such as our SA-180
in a home theater application or as a passive subwoofer connected in parallel with the L/R speaker in a traditional 2 channel audio system. It may
also be used in a distributed audio system to add dynamic range that most
people are missing in today’s whole house installations.
Copyright © 2014 Atlantic Technology International.
Specifications are those in effect at the time of printing. Atlantic Technology reserves the
right to change specifications or designs at any time without notice.
3
Instruction Manual
Speaker Placement
Location Considerations
Choosing the location for the subwoofer is a very important consideration.
Since the IW-28 SUB can't easily be moved once it’s installed (!), very careful consideration should be given to its placement. In general, the cleanest
and most articulate delivery of bass energy into the room occurs when the
subwoofer is placed asymmetrically with respect to the room’s dimensions
and is located along the same wall as the left and right speakers. If this is
not possible, try to locate it within the front half of the room. (see fig. 1).
Such placement generally results in the best overall balance of bass impact
vs. ‘one-note boom.’
Figure 1 – Asymmetrical Placement
FRONT
5'
Good
If you are using 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
FRONT
14'
5'
Good
18'
13'
Good
13'
18'
3'
11'
Connection Considerations
Choosing how you connect the IW-28 SUB is dependent upon your application. In a Home Theater it should be powered by an external monoblock
amplifier, such as Atlantic Technology’s SA-180 with its EQ circuit that was
specifically designed to get the very best performance out of the IW-28 SUB.
In a traditional 2 Channel System it may be used as a passive subwoofer
if your receiver does not have “sub out” and/or an additional monoblock
amplifier is not desired. In a Distributed Audio system it can be used either
way depending upon your system. We will cover each of these applications
separately.
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