Definitive Technology BP 8B User manual

nitive Technolngy®
The Leader in High-Perfonnance LoudspeakersTM
BP8B
BipolarLoudspeaker
Owner's Manual
Congratulations
Congratulations on your purchare of the
Definitive Technology
BP 8B Bipolar
Loudspeaker System. This revolutionary
loudspeaker utilizes state-of-the-art
components (cast basket homopolymer-
coned bass/midrange drivers, moving coil
ferrotluid-cooled pure aluminum dome
high frequency radiators, uniphase
crossover networks, etc.), anon-resonant
monocoque cabinet and unique bipolar
(front and rear) radiation in order to
achieve the most lifelike sound possible
in your listening room for many years
to come.
Please Inspect For Shipping Damage
Each loudspeaker leaves our plant in perfect condition. Any
visible or concealed damage most likely occurred
in handling
after it left our plant and should be reported at once to your
Definitive dealer or the shipping company which delivered
your loudspeaker.

Connecting Your Loudspeakers
It is critical for properperformance that both speakers (left and right) be connect-
ed in properphase. Note that one terminal on each speaker (the
+) is colored red and
the other(the
-) is colored black. Please make certain that you connect the red (+)
terminal on each speakerto the red (+) terminal of its channel on your amplifier or
receiver, andthe black (-) terminal to the black (-) terminal. It is essential that both
speakersbe connected in the same way to the amplifier (in phase).
If you experience
agreallack ofbass, it
is likely that one speaker is out of phase with the other.
Usually
if distortion is heard when the speakers are being driven at loud
levels,
it is caused by driving (turning up) the amplifier too loud and not
driving the speakers with more power than they can handle. Remember,
most amplifiers
put out their full rated power well before the volume con-
trol is
turned all the way up! If your speakers distort when you play them
loud, turn down the amplifier or get abigger one.
"Spiking" Your Loudspeakers
An optional "spiking"kit has been provided should you desire to "spike" your
loudspeakers."Spiking" your loudspeakers will provide greater stability when plac-
ing your loudspe*.ers oncarpeting and
will also, according to many experts, result
in an overall improvement in sonic performance. Care should
be taken when using
spikes as they may cause damage to wooden
or other Doors which are susceptible to
being scratched. Definitive Technology
is specifically not responsibl~ fordamage
which may result from the use ofspikes.
The spike kit contains 4spikes.
To install,unscrew the plastic guides on the bot-
toms ofthe speakers. Then screw the 4spikes into the Tnuts. Then (preferably with
the help ofanotherperson) lift the speakerupright and lower it down to its exact
desired position on the
Door. You must lower the speaker to the exact position you
want because once the spikes are in place
you cannot move the speakers sideways
on the rug orfloor -this may damage theDoor
or thespeakers. Next, adjustthe
spikes
so the speaker sits solidly (and does not rock).
Please note
that you can adjust the feet or spikes to tilt the speakers back (front
to
back approximately1/2" to 1" higher than rear) for even better sound.
Speaker Break-In
Your BP 8Bs should sound good rightout of the box; however, an extended
break-in period of20-40 hours
or more offairly loud playing is required to reach
full performance capability. Break-in allows the suspensions to work in and results
in fuller bass, amore open "blossoming" midrange and smoother high frequency
reproduction.

Positioning the BP 8s in Your Room
It is important, because of the BP 8B's unique bipolar (front and rear)radiation
pattern,that some simple set-up recommendations be
foil owed in order to assure
optimum performance in your room. Please rememberthatalthough these recom-
mendations areusually valid, all rooms and listening set-ups are somewhat unique,
so do not be afraid to experiment with the speakers. Remember, whatever sounds
best to you
is correct.
In most rooms the speakers should be placed 6to
12 inches from the rear wall in
ocder
to allow the rearradiated sound to freely reflect off the back wall. Placement
closer to the rear wall
will increase the bass output while placement further from the
rear wall
will decrease the bass output.
The speakers should usually be placed 6
to 8feet apart and kept away from the
side walls and corners. Agood rule of thumb
is to place the speakers separated by
one halfthe length of the wall they are positioned along, and each speaker one quar-
terthe length of the back wall away from the side wall.
Speakers may be angled in towards the listening position
or left parallel with the
rear wall. Generally,
we recommend angling the speakers in which will result in a
somewhat brighter, clearer, more detailed sound with amore focused central image.
Leay ing the speakers parallel with the wall
will result in aless bright, more diffuse
sound. Try
to leave the space on the sides of the speakers as open and as unobstruct-
ed as possible
so that there will be no interference with the rear radiated sound.
The BP
8B can also be used as an exceptional rear or side surround effects speaker
in home theaterinstallations. When used as aside speaker, locate the BP
8B behind
and to the sides of the listeners. When used as arear speaker, the BP
8Bs can be
located 6-12" from the rear wall and pointed towards the listeners,
or placed sideways
on the rear wall with the drivers facing
at each other and towards the side walls.
Technical Assistance
It is our pleasure to offer assistance if you have any questions regarding your
BP
8Bs or their set-up. Please contact your nearest Definitive Technology dealer or
contact us directly at 410-363-7148.
Service
Service andwarranty work on your Definitiveloudspeakers will normally be per-
formed by your local Definitive Technology dealer.
If, however, you wish to return
the speaker
to us, please contact us first, describing the probiem and requesting
autborization as
well as the locations of the nearest factory service center. Please
note that the address given in this booklet is the address of our offices
only.
Under no circumstances should loudspeakers be shipped to our
offices or returned without contacting us first and obtaining return
authorization.
Definitive Technology Offices
11105 Valley HeightsDrive
Owings Mills, Mtryland21117
PIone: 410-363-7148

BP 8B Specifications
Dimensions
Frequency Response
Efficiency
Nominal Impedance
Driver Complement
Recommended
Associated Amplification
Weight
7"Wx 11"D x38"H
22 Hz-30 kHz
91dB
Compatible with80hm outputs
Two 14cm cast-basket polypropylene coned bass-
midmnge drivers (withbutyl rubbersurrounds
and dust
caps) and two 25mm pure aluminum dome tweeters
blended by aLinkwitz-Riley crossover
20-200watts/cRumel
50
Ibs. each
Limited 5-year Warranty
Definitive Technology warrants to the original retail purchaser only that this Definitive Technology
Loulspeaker Product (the"Product") will be free from defects in materials and workmanship for a
period of five (5) yea-s from the date of the original purchase from a Definitive Technology Franchised
Dealer, However, this warranty will automatically terminateprior to the expiration of five (5) years if
1heoriginal retail purclllser sells or otherwise traffifers the Productto any other party. The original
retail purchaser shall hereinafter be referred to as "you." To obtain the warranty protection for your
~fimtive Technology Product(s), you must fill out the Warranty Registration Card(s), within ten days
of the date of IJIrchase.
Defective Products must be shipped, together with proof of date of purchase, prepaid insured to the
Franchised Dealer from whom you purchased the Product, or to the nearest Factory service center.
I\-oduct(s) must be shipped in the original shipping container or its equivalent; in any case the risk of
loss or damage in tIansit is to be borne by you. If, upon examination at the Factory or a Definitive
Technology Franchised Dealer it is determined that the unit was defective in materials or workmanship
:t any time dmng this Warranty period, Definitive Technology or the Definitive Technology Frmchised
Dealer will, at its option, repairor replace this product at no additional charge, except as set forth below.
All replaced parts and Product(s) become the property of Definiti ve Technology. Product(s) replaced or
repaired under this Wananty will be returned to you, within a reasonable time, freight collect.
This Wammty does not include service or parts to repair damage caused by accident, misuse,
abuse, negligence, inadequate packingor shipping procedures, commercial use, voltage in excess of the
rated maximum of the unit, cosmetic appearance of cabinetry not directly attributable to defects in
materials or workmanship, or service, or repair or modification of the Product which has not been
authorized by Definitive Technology.
DefinJtive TechnoJo1JJ makes no WtuTanty with respect to its Products purclwsed from dealers or
outlets other than De}1JUtlve Technology Franchised Dealers.
This WtuTanty is in lieu of all other expressed WtuTanties. If this Product is defective in material
or workmanship as wtuTanteil above, your sole remedy shall be repair or replacement as provided
above. In no event will Definitive Technology be liohle to you for any incidental or consequential dam-
ages arising out of the use or inability to use the Produc~ even if Definitive Technology or a Definitive
Technology Franchised Dealer has been advised of the possibility of such damages, or for any claim
by any othe.r fJ.lU1l. Some sliJtes do not aUow the excluswn or limitation of consequential damages, so
the above liniitation may not apply to you.
AU implied wtuTanties on the Product are limited to the duration of this expressed WtuTanty. Some
states do not aUow limitation on how long an implied WllITanty lilsts, so the above limitations may not
apply to you. This WllITanty gives you specific legal rights, andyou also may have other rights which
vary from state to state.
C€
This product complies with the essential
requirements
of the EMC directive 89/336/EEC.

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Definitive Technology
11433 Cronridge Dr. Suite K • Owings Mills, MD 21117
[phone] •[email protected]
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