Definitive Technology DEMAND SERIES User manual
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DEMAND™ SERIES
Owner’s Manual
D15 & D17 Tower speakers
WHAT OBSESSION SOUNDS LIKE™
Thank you for choosing the Definitive Technology Demand Series tower speakers. The Definitive
Technology Demand Series high-performance tower speakers deliver full-range, room-filling
sound and precise imaging in a modern, elegant styling. The Demand Series offers the most
cutting-edge audio technologies, including a Balanced Double Surround System (BDSS) high
output mid-bass drivers, a Linear Response Waveguide, dual side-firing bass radiators, carbon
fiber woofers, and annealed aluminum dome tweeters with our 20/20 ware alignment lens and
laterally offset tweeters.
Our engineers have spent many years developing this product. In order to ensure that you
experience the finest performance possible-one we’ve continued to perfect since 1990-we
encourage you to take a moment to fully read this owner’s manual and familiarize yourself with
the proper installation and set-up procedures for your Demand Series tower speakers.
DEFINITIVE TECHNOLOGY
EN-1
D15 D17
EN-2
Safety Instructions
SAFETY PRECAUTIONS
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage” within the
product’s enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings.
Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
9. Only use attachments/accessories specified by the manufacturer.
10.
Use only with the cart, stand, tripod, bracket, or table
specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury
from tip-over.
11.
Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been damaged in any
way, such as power supply cord or plug is damaged, liquid has been
spilled or objects have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate normally, or has
been dropped.
EN-3
NOTES ON USE
WARNINGS
∙Avoid high temperatures.
Allow for sufficient heat dispersion when installed in a rack.
∙Keep the unit free from moisture, water, and dust.
∙Do not obstruct the ventilation holes.
∙Do not let foreign objects into the unit.
∙Do not let insecticides, benzene, and thinner come in contact with the
unit.
∙Never disassemble or modify the unit in any way.
∙Ventilation should not be impeded by covering the ventilation
openings with items, such as newspapers, tablecloths or curtains.
∙Naked flame sources such as lighted candles should not be placed
on the unit.
∙Do not expose the unit to dripping or splashing fluids.
∙Do not place objects filled with liquids, such as vases, on the unit.
A NOTE ABOUT RECYCLING:
This product’s packaging materials are recyclable and can
be reused. Please dispose of any materials in accordance
with the local recycling regulations.
When discarding the unit, comply with local rules or
regulations.
EU Declaration of Conformity
Hereby, [Sound United, LLC] declares that our product is in compliance
with following EU/EC Directives. The full text of the EU declaration of
conformity is available at the following internet address:
<EU/EC Directives>
RoHS: 2011/65/EU, and amendment directive (EU) 2015/863
Sound United, LLC
1 Viper Way Vista, CA 92081 USA
EU contact : Sound United Europe, A division of D&M Europe B.V.
Beemdstraat 11, 5653 MA Eindhoven, The Netherlands
EU declaration of conformity URL:
https://www.definitivetechnology.com/declarations-of-conformity
EN-4
We're delighted that you're part of our
Definitive Technology family.
Please take a few minutes to register your product* so we have a complete record
of your purchase. Doing so helps us serve you the best we can now and in the
future. It also lets us contact you for any service or warranty alerts (if required).
Register here: http://www.definitivetechnology.com/product-registration
Note: the data we gather during online registration is never sold or distributed to third parties.
* Serial number can be found at the back of the manual
STAY VIGILANT ON ALL THINGS DEFINITIVE TECHNOLOGY
@DefinitiveTech @DefinitiveTech @definitivetechnology
EN-5
Unpacking Your Demand Series Speakers
Please unpack your system carefully. We recommend saving all cartons and packing materials in case you move or
need to ship your system.
Your serial number can be found in this booklet and on the speaker itself, on the input cup. Each loudspeaker leaves
our factory in perfect condition. Any visible or concealed damage most likely occurred in handling after it left our
factory. If you discover any shipping damage, please report this to your Definitive Technology dealer or the company
that delivered your loudspeakers.
What’s in the box:
∙1 pair of Demand Series speakers with magnetic grilles
∙Accessory box
∙Owner’s Manual
∙Aluminum stabilizer base
∙4 x carpet spikes
∙4 x hard floor glide
∙4 x Lock ring
∙4 x Screws
∙Cleaning Cloth
EN-6
Positioning the Speakers in Your Room
Your Demand Series speakers are very flexible in terms
of positioning, however each pair of speakers is designed
with dedicated left and right speakers. Position the pair
so that the tweeters are on the outside, as pictured here.
To optimize their performance, please follow these
simple guidelines. Although the following
recommendations will usually yield the best results, all
rooms and listening setups are different, so do not be
afraid to experiment with the speaker placement.
Whatever sounds best to you is likely correct.
We recommend setting up the speakers and listening position
in an equilateral triangle as illustrated in Figure. You will also
get good results if the listeners are a bit farther away. For
example, if line A and C are each 10' long then line B could be
between 7' and 10' wide. Toeing the speakers in slightly, toward
your listening area will also provide a stronger center image.
Feel free to contact Definitive Technology for additional
guidance or questions about speaker placement.
EN-7
5.1 Home Theater Configuration
Five Demand Series speakers will make an
astounding 5.1 home theater. When used as
left and right surrounds, locate the speakers
behind the main listening position. If you use
the towers as left and right rear surrounds,
position them wide apart if possible. (for
instance, if there is a couch in the center of the
rear wall, position the speakers wider apart than
the couch). Definitive Technology also offers a
center channel (Demand D5c) and surround
loudspeakers (Demand D7/9/11), any of which
will blend with your Demand Series front stage.
Note: When using Demand Series as rear speakers position the speakers so that the tweeters are on the outside,
closest to the outside walls.
EN-8
Room Acoustics
Ideally, the speakers should be placed one to two feet from room boundaries, such as large pieces of furniture, walls
and especially corners. Placing a speaker closer to room boundaries increases bass, but may result in a “boomy” or
bass-heavy sound and degradation of stereo imaging. Try varying the speaker’s distance from the rear walls, side
walls, and corners until the best balance between low frequency extension and clarity is achieved. If you cannot get
the speakers at least one foot from the room boundary, treat the adjacent room boundaries with absorbing or diffusing
material to improve performance.
Adding an External Subwoofer to your Demand Series Towers
Although the Demand Series delivers superb low frequency response, some listeners go for the ultimate performance
and add an additional powered subwoofer to their system. If you choose to do so, we strongly suggest using the
Supercube8000 (https://www.definitivetechnology.com/products/supercube-8000) in order to achieve the highest
level of sound quality possible. This should be driven with an RCA low-level cable connected to the subwoofer output
of your receiver or processor. Your receiver's Speaker configuration should be set to "Small" for the front left and
right speakers and select "Yes" for a Subwoofer.
EN-9
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