Instruction manual

7
Instruction Manual
Front Panel Controls
The IWTS-30 LCR has three controls that help optimize the speaker’s per-
formance regardless of mounting location or room acoustics.
High Frequency Level Control
This control adjusts the relative level of high frequency
output to compensate for varying room acoustics or
placement behind a screen.
“+” is for absorptive, acoustically “dead” rooms (or when
the speaker is behind a movie screen). Use this position
to increase the HF level and restore the proper sparkle and liveliness to
the sound.
“0/THX” is for rooms of average absorptive characteristics.
“-” should be used in rooms that are highly reflective, with hard floors
and exposed windows.
The setting of the HF control is mostly a matter of personal taste, so try it
in all three positions and see which one is preferred.
Location Control
This control adjusts the relative level of the mid/high
frequency output to compensate for placement behind
a screen.
“0/THX” delivers the flattest output for placement behind a perforated
screen.
“ - ” reduces the mid-high frequency output slightly.
This control can also be used to adjust for different room acoustics.
Boundary Compensation Control
Large room boundaries, such as floors, walls, and ceil-
ings, reinforce sound by acting essentially as acoustic
“mirrors.” When the speaker is mounted too close to
the corner or a wall/ceiling intersection, this sonic “rein-
forcement” often results in an unnatural heaviness or
coloration of the sound.
If it’s necessary to mount the speaker closer than 12 inches to the ceiling or
corner, you may find that by switching the Boundary Compensation control
“on,” the speaker sounds better. We recommend that you try the control in
both positions and see if it helps in your particular installation.
“On” reduces mid-bass output to compensate for reinforcement of
nearby room boundary
“THX/Normal” yields flat response, with no mid-bass cut
IR Knockout
There’s an IR “knockout” plug in the upper right corner
of the front baffle. If you are using a multi-room con-
trol system, you can install a standard IR receiver in the
knockout hole.
Should you have any questions or problems please feel
free to contact us at 781-762-6300 or through our web site, www.atlantict-
echnology.com.
Specifications
IWTS-30 LCR
Type 3-way
Drivers Woofer 8” (203mm) GLH*
Midrange (2) 3½" (89mm) GLH*
Tweeter 1" (25mm) soft dome LRT™
Frequency Response 55Hz – 20kHz ±3dB
Nominal Impedance 6 Ohms
Crossover Frequency 500Hz, 3000Hz 3rd order
Sensitivity 89dB
Recommended Power 25 – 200 Watts RMS
Dimensions (grille frame) 12
5
⁄16 x 21
5
⁄8 x 3
7
⁄8"
(W x H x D) 312 x 547 x 100mm
Cutout Dimensions 11
1
⁄8 x 20
3
⁄8”
(W x H x D) 283 x 518mm
Optimum Sealed Enclosure Volume 1.0 cu. ft.
Net Weight 15lbs; 6.9kg each
*Graphite Loaded Homopolymer
Specifications are those in effect at the time of printing. Atlantic Technology reserves the right
to change specifications or appearance at any time without notice.
THX and THX Ultra 2 are trademarks of THX Inc. Manufactured under license from THX Ltd. THX
is a trademark of THX Ltd. which may be registered in some jurisdictions. All rights reserved.
Front Panel Controls