7
Instruction Manual
Front Panel Controls
Low-Pass Control
The IW-28 SUB has a front-mounted control that selects
or bypasses the speaker’s built-in Low-Pass crossover. Set
this to the “off” position when connected to the SA-180
or other amplifier. In this case, the receiver is used to
control the low pass filtering.
Set it to “on” only when using it in the “passive” mode, powered by 2 chan-
nels of amplification.
IR Knockout
There is an IR “knockout” plug in the upper right corner
of the baffle behind the logo. If you need, you can install
a standard IR receiver in the knockout hole.
Should you have any questions or problems please contact us at 781-762-
6300 or through our web site, www.atlantictechnology.com.
Specifications
Specifications
IW-28 SUB
Overall Dimensions
(W x H x D)
12
5
⁄
8
x 21
7
⁄
8
x 3
7
⁄
8
" (319 x 554 x 100mm)
Cut-out Dimensions
(W x H)
11
1
⁄
8
x 20
3
⁄
8
” (283 x 518mm)
Drivers/Design
Dual 8” (203mm) long-throw, 40mm voice 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-
aged by an amplifier driven into audible distortion. The harsh ampli-
fier distortion (“clipping”) that occurs in this situation will eventually
cause damage to the speaker system. This type of damage may be
cumulative and can build up over time, as the amplifier is driven into
overload again and again. Such damage is easily identifiable through
examination of the damaged speaker’s voice coil and is not covered
by the warranty.
Specifications are those in effect at the time of printing. As part of our ongoing program of
continuous product improvement, Atlantic Technology reserves the right to change specifications
or appearance at any time without notice or obligation to modify existing product..
