Induction Dynamics S1.8T User manual

S1.8T
3-Way Tower Speaker

Table of Contents
Introduction
General Information
Check Speaker and Parts
General Care of Your Loudspeaker and Amplier
Bass and Loudness Contour Controls
S1.8T Location
Carpet Spikes
Speaker Wire
Speaker Information
S4X Crossover
Wide Angle Phase Alignment
Multi-Channel (Home Theater) Installation
Speaker Placement
S1.8T Speaker Connection
S1.8T Specications
Warranty
Contacts
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3
3
3
3
3
4
4
5
5
6
7
7
7
8
9
10
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Introduction
Congratulations on your selection of the Induction Dynamics®S1.8T 3-way tower
loudspeaker. The S1.8T is engineered for smooth performance and very high power handling.
The S1.8T incorporates exclusive, patented S4X® crossover and driver-control technology,
which makes possible virtually perfect integration of drivers which are ideal for their intended
frequencies. S4X also provides greatly increased control over frequency response, phase,
and impedance, resulting in superior performance and imaging. Because of S4X technology,
any of Induction Dynamics’ speakers can be used to build a custom home theater system.
Your S1.8T can be combined with any of our center and surround speakers, be they in-wall,
on-wall, or free-standing. For more details on S4X technology, see the “speaker information”
section of this manual.
Your S1.8T incorporates dual 6.5” Kevlar cone woofers with rubber surrounds and cast
frames, a 3” soft dome midrange, and a 1.125” inverted titanium dome tweeter.
WARNINGS:
WARNING! - SHOCK HAZARD
WARNING! - DO NOT OPEN
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL

General Information
Please read these instructions thoroughly before attempting to connect and
operate the S1.8T
Check Speaker and Parts
Unpack and carefully check each loudspeaker. If you suspect damage from transit, report
the problem immediately to your dealer and/or delivery service. If possible, save the shipping
carton(s) for future use.
General Care of Your Loudspeaker
Whenever changing speaker wires, interconnect wires or power cords, always turn off all
equipment. There are no user serviceable parts inside.
Your speakers come in a high quality nish that is both attractive and durable. To clean, use
a soft, damp cloth. If your drivers become dusty, dust them with a paintbrush or a brush
vacuum attachment. Do not use a strong or abrasive cleaner.
The grille is covered in acoustic cloth. To keep your grille clear of debris, we recommend
you use a lint roller (like you would use on clothes).
Bass and Loudness Contour Controls
Do not use bass or loudness contour controls. Induction Dynamics’ subwoofers produce
very low frequencies without these controls. Use of these controls will make the bass sound
“boomy”, obscure higher frequencies, and possibly cause damage.
S1.8T Location
S1.8T speakers are freestanding units that are designed in such a way that the tweeter will
be at ear level when the audience is sitting. The tweeter reproduces high-frequency audio
which our ears perceive as most directional, so we are most attuned to their level and
placement.
A pair of S1.8Ts should be placed a few feet from the front wall of the listening area, six feet
or more apart. Experiment with the distance between the two speakers to achieve an evenly
spread sound stage. Speakers should be at the same height (with the tweeter at ear level). To
optimize bass response, vary the distance of your S1.8T speakers from the front wall.
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Carpet Spikes
Carpet spikes are not required with the S1.8T. However, they have been provided if you
would prefer to use them. Should you choose to do so, lay the S1.8T on its back side, then
screw the carpet spikes into the threaded holes under the base of each speaker.
Speaker Wire
Use approved wire designed for in-wall or exposed use, as appropriate for your installation.
For the S1.8T, we recommend using high-quality speaker wire that is 14 gauge or lower,
with easily visible polarity coding to make your connections. The following chart identies
minimum gauge requirements for various lengths. See your local dealer or installation
contractor for more information.

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Speaker Information
S4X™ Crossover
The heart of Induction Dynamics is found in the S4X Super Fourth-Order Crossover. The
patented S4X inductively couples crossover coils and optimizes each driver’s performance,
individually and interactively with the other drivers. This greatly increases control over
driver range, frequency response, phase and impedance. Because S4X produces such a
steep crossover slope−and thus a atter frequency response−Induction Dynamics is able to
use the best possible drivers for each range of frequencies, allowing us to sonically match
every speaker in our lineup and to create speaker models able to perform in any combination
and in any acoustic environment.
The S4X’ optimized frequency response means music that moves dramatically up and down
in pitch will never fade in or out, but rather maintain its power as it seamlessly crosses
over from one driver to the next. It also means that frequencies critical to human speech
(frequencies that deliver consonants like “S” and “C”) will sound as natural coming from
your speakers as they would in real life—making dialogue from movies and television sound
crisp and clearly understood.
Above: The S4X crossover routes audio signal to their intended drivers at specic frequen-
cies (700 Hz, 3800 Hz). Because the S4X produces such a steep crossover slope, Induc-
tion Dynamics is able to use the best possible drivers for each frequency range. Subwoofer
crossover points are generally selectable through your subwoofer amplier. Induction Dy-
namics recommends a subwoofer crossover point between 50 - 60 Hz.

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Wide Angle™ Phase Alignment
In each crossover region, which spans approximately one octave, the sound from two
different drivers must be added together. This simple fact creates problems in most speakers,
because the phase must be matched, not just on axis, but also off axis in order to create a
large “sweet spot” for the listener. Most speakers’ drivers are only optimized on-axis, using
measurements from a microphone placed at a single point in front of the speaker. This
produces a horizontal zone in which the sound is optimized; however there may be drastic
differences in sound quality along the vertical axis—meaning there may be a loss of sound
quality if you stand up, sit, or otherwise move out of the optimized zone.
Induction Dynamics®eliminates phase differences with respect to height through our Wide
Angle®phase alignment technology. Because our patented circuitry provides additional
variables that can help control phase, Wide Angle nds the one optimization solution that
produces a at frequency response along the vertical axis, when the microphone (or listener’s
ear) is moved up and down vertically. This means you experience true audio perfection
whether you’re standing, sitting, or lying down.
Conventional Speaker
System
Wide Angle™ Phase
Alignment
Most conventional speaker designs have a
small and horizontally narrow “sweet spot”
caused by inaccurate phase matching of the
drivers. The best quality sound can be heard
only within a very conned area. Outside of
this area the sound quality can drastically
decrease, becoming muddy or indistinct.
Patented Wide Angle™ Phase Alignment
circuitry provides precise phase matching
of the drivers, noticeably expanding the
“sweet spot” both horizontally and vertically.
Listeners are immersed in a large sound eld
and enjoy clear, undistorted sound regardless
of their position relative to the speakers.
Approximate
ear level
while standing
Approximate
ear level
while seated
Approximate
ear level
while reclining

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Multi-Channel (Home
Theater) Installation
Speaker Placement
5.1 System
A 5.1 system consists of a front left, front right, surround left, suround right, center channel,
and subwoofer channel. An S1.8T generally functions as mains, but may also be used as
surrounds. In a home theater conguration, the main left and right channels should be
placed a few feet from the front wall as close to listening height as possible. The surround
channels should be placed to either side of the listening area or behind the listening area at
listening height.
6.1 System
A 6.1 system has the same basic channels as a 5.1 system, with the addition of a rear center
channel placed directly behind the listening area.
7.1 System
A 7.1 system has the same basic channels as a 5.1 system, with the addition of a left rear
surround and right rear surround.
S1.8T Speaker Connection
Connect the proper output on your home theater processor or receiver to the binding posts
on the S1.8T using normal polarity (red to red and black to black).

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S1.8T Specifications
Type: 3-way freestanding tower loudspeaker.
Crossover: Exclusive patented S4X Driver Control Technology.
700 Hz and 3,800 Hz
Crossover Frequencies:
Nominal Impedance: 4 Ohms (2.5 minimum)
Frequency Response: 45-20,000 Hz
Sensitivity (2.83 V @ 1M): 90 dB
SPL (1 W / 1 M): 87 dB
Power Handling: 400 W
Magnetic Shielding: No
Tweeter: 1.125” high-power soft dome
Midrange: 3” soft dome
Woofer: (2) 8” Kevlar cones with coated foam surrounds and cast
frames
Subwoofer: N/A
Binding Posts: Gold-plated; #4 AWG Max
Enclosure: Ported
Optional Accessories: N/A

Warranty
Induction Dynamics, Inc. warrants the S1.8T against defects in materials and workmanship
for a period of seven years from the date of original retail purchase. Induction Dynamics,
Inc. will repair or replace any S1.8T that does not meet this warranty.
This warranty may be registered by mailing a copy of the retail sales receipt to Induction
Dynamics, Inc. at the address below. Please write the serial number along with the name
and address of the retailer from whom you purchased the speaker(s) and/or amplier(s). This
may be done at the time of purchase or before requesting repair service under this warranty.
To obtain repair service, call or write to Induction Dynamics, Inc. at the phone number or
address below. You will be given a return authorization number. Please mark this number
clearly on the outside of the package(s) for identication. Packages that are not marked with
a return authorization number on the outside may not be accepted by Induction Dynamics,
Inc. Please pack each S1.8T in a substantial shipping container with plenty of protective
foam. If possible, use the original shipping container and packing material. For repairs
covered by and performed under this warranty, Induction Dynamics, Inc. will pay for the
return shipping charges. This warranty covers defects in materials and workmanship, and
does not cover damage or failure resulting from accident, misuse, or shipment. The warranty
is void if the S1.8T is serviced or altered by anyone other than Induction Dynamics, Inc. the
sole remedy for breach of this warranty shall be repair or replacement.
Limits and Exclusions: There are no warranties except as mentioned above.
Neither Induction Dynamics, Inc. nor anyone else who has been involved in
the creation, production, or sale of this product shall be liable for any direct,
indirect, consequential or acidental damages arising out of the use or inability to
use this product, or arising out of breach of this warranty. Induction Dynamics,
Inc. makes no other warranties, express or implied, including without limitation
warranties of merchantability or tness for a particular purpose. There are no
warranties that extend beyond the description on the face hereof.
Induction Dynamics
Customer Service Department
8005 W 110th St, Suite 208
Overland Park, KS 66210
USA
Phone: [phone]
913.663.5600
Fax: [phone]
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Contacts
Manufacturer Information
If you have any questions, contact Induction Dynamics by phone at 855.663.5600
or 913.663.5600, 8:00 a.m. - 5:00 p.m. CST, fax at 913.663.3200, email at sales@
inductiondynamics.com, or write to:
Induction Dynamics
Customer Service Department
8005 W 110th Street, Suite 208
Overland Park, KS 66210
USA
Note: Please do not ship your loudspeaker for service without obtaining prior approval and
return authorization number. See warranty for further information.
Retailer Information
To help simplify your record keeping, please ll out the following information about the
retailer you bought your Induction Dynamics products from. Additionally, you may staple,
tape, or glue a copy of your receipt to the next page.
Retailer name (company or individual):
Address:
City:
State:
Zip or Postal code:
Phone:
Email:
Date of purchase:
Serial number:

To simplify your record keeping,
please glue, staple, or tape your receipt
to this page.
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™
8005 W. 110th Street, Suite 208
Overland Park, KS 66210
Tel: [phone]
Fax: [phone]
www.inductiondynamics.com
© Induction Dynamics®, August 2013