Burmester B28 User manual

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OPERATION MANUAL
Table of Contents
Introduction 3
About this Loudspeaker 4
About this Operation Manual 5
Operating Conditions 5
Intended Use 5
Meaning of Warning Symbols and Warning Words 6
Important Notes 7
Unpacking the Loudspeakers 8
Scope of Delivery 9
Overview of the B28 10
SETTING UP THE LOUDSPEAKERS 13
Choosing an Installation Site 15
Optimal Installation Position 15
Treble and Spatial Imaging 15
CONNECTING THE LOUDSPEAKERS 17
Loudspeaker Cable 19
Connection and Operating Modes 20
1. Connecting the Loudspeakers in the Classic Operating Mode 20
2. Connecting the Loudspeakers for Bi-Amp Mode 22
— Disassembling the Cable Bridges for Bi-Amp Mode 23
— Connecting the Loudspeakers for Bi-Amp Mode 25
OPERATION OF THE LOUDSPEAKERS 27
Room Adaption 28
Troubleshooting 29
FURTHER INFORMATION 31
Warranty 32
Care 32
Disposal 32
Technical Data 33

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OPERATION MANUAL

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B28 LOUDSPEAKER
Dear music lover,
Congratulations on your purchase and
thank you for choosing Burmester.
You have chosen a product that combines absolute fidelity and
uncompromising quality with technical innovation. Before using
the device for the first time, we recommend that you read through
the entire manual at least once so that you can make full use
of the capabilities of this exceptional audio device. Should you
still have questions, please speak to your dealer or contact us
directly. We’re always happy to discuss your special requests,
no matter how unusual. We love a good technical challenge.
We wish you an exceptional listening experience.
Your Burmester team

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About this Loudspeaker
2022 sees the launch of Burmester’s B28 loudspeaker as an
addition to the B-Series. Like the larger B38, the B28 loudspeaker
works on a3-way principle, but in the case of the B28 all the drivers
are arranged on the front of the speaker. To work independently
without interaction, each is located within its own housing cham-
ber. Sonically, the B28 speaker also benefits from systematically
integrated stiffening elements for structural stabilization and
reducing cabinet vibrations. Unwanted resonance is subsequently
successfully minimized, increasing the loudspeaker’s accuracy.
To eliminate microphonic effects, which can have a negative
influence on the frequency response, the crossover is also placed in
a separate chamber. The two flow-optimized, high rigidity bass
reflex tubes employ very smooth surfaces to enable the B28 to
reproduce the lowest frequencies with a high level of accuracy.
By means of the sophisticated, technically high-quality signal
routing and the use of fine core Burmester cables, as well as large
cross sections, detrimental transmission losses can be almost
eliminated.
FEATURES:
— Air-motion transformer with folded foil cone in the middle of
avery strong magnetic field for particularly fine resolution
combined with high level stability and impressive spaciousness
— Large midrange driver with glass-fiber cone optimized for very
short attack and release times over a wide frequency range
— Two newly developed high-excursion woofers per speaker with
particularly stiff fiberglass cone and flow-optimized bass reflex
tubes for clean, fast and deep bass
— Room Adaption - individual adjustment of the bass level by
means of an adjustment switch and foam cylinder
— Optional bi-amping for the connection of two power amplifiers
per speaker
— Elaborately vibration-damped housing with multi-layered walls,
systematically placed cross struts as well as separate chambers
for all chassis and the crossover for maximum accuracy
— Solid loudspeaker base made of matched, vibration damping
and stiffening materials to minimize vibration transmission
OPERATION MANUAL

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B28 LOUDSPEAKER
About this Operation Manual
Permissible Operating Conditions
This loudspeaker is intended for use in home
music systems.
This operation manual describes the installation, connection
and operation of the Burmester B28 loudspeaker.
Please read this operation manual in full
and keep it in a safe place.
If you have further questions regarding the installation and
operation of your loudspeakers, please contact your dealer.
Please take care to only ever use your Burmester product under the
following conditions:
Maximum altitude: 2000 m
Humidity < 50%
Temperature range: 20-30 °C
Intended Use

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OPERATION MANUAL
Meanings of Warning Symbols
and Words
The following warnings, symbols and warning words are used in this document:
The general danger symbol in combination with the warning words
CAUTION, WARNING and DANGER warns of the risk of serious injury.
Follow all of the subsequent instructions to avoid injury or death.
The flash symbol in combination with the warning word DANGER warns of
a life-threatening electrical voltage.
This warning symbol in combination with the warning word
CAUTION warns of high-intensity sound.
CAUTION: indicates a hazard could damage or destroy the device.
CAUTION: indicates a hazard that poses a low or moderate risk of injury.
WARNING: indicates a hazard that could cause serious injuries or death.
DANGER: Indicates a hazard that will result in immediate death or serious
injuries.

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B28 LOUDSPEAKER
Important Notes
CAUTION!RISK OF INJURY TO CHILDREN
This device poses various injury risks if used improperly. This device is not
intended for use by children.
$ Never leave your children unsupervised with the device.
CAUTION!OPENING THE LOUDSPEAKERS
There are no parts inside the loudspeakers that can be serviced by the
user.
$ Do not open the loudspeakers.
DANGER! DANGEROUS VOLTAGES
The loudspeaker outputs of a power amplifier may carry potentially fatal
voltages.
$ Do not touch the speaker connectors on the device and loudspeaker.
CAUTION! HIGHINTENSITY SOUND
Loud output signals can damage your hearing.
$ Set the connected amplifier to a low volume before switching it on.
$ Avoid listening at high volume levels for long periods of time.

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OPERATION MANUAL
Unpacking the loudspeakers
1. Carefully remove the device from the packaging.
ATTENTION! DAMAGING THE HOUSING
To avoid damaging the housing, do not use any pointed or sharp objects to
open the packaging.
CAUTION! RISK OF INJURY DUE TO HEAVY WEIGHT
The loudspeaker is very heavy and can cause injuries when falling.
The loudspeaker should only be unpacked and set up by persons who are
experienced in handling heavy loads. If necessary, have a second person help you
unpack and set up the speakers.
2. Remove all the packaging materials and padding from the device.
WARNING! SUFFOCATION HAZARD!
Parts of the scope of delivery are delivered packed in plastic bags.
Remove the packaging from the vicinity of children.
3. Keep the packaging for later transport.

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B28 LOUDSPEAKER
SCOPE OF DELIVERY
The B28 loudspeaker is delivered as a pair.
The scope of delivery of a pair comprises:
2Packaging with B28 loudspeaker
1Operation manual
1 Warranty certificate
4Foam cylinder for bass reflex ports (two per loudspeaker)
4Connection jumpers (two per loudspeaker, pre-installed)
PLEASE CHECK THE SCOPE OF DELIVERY FOR COMPLETENESS AND DAMAGE.
If parts of the delivery are missing or if you notice any damage when unpacking the
device, please do not connect them and consult your Burmester dealer instead.

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1
2
3
3
1AMT tweeter
2Mid-range driver
3Woofer
4Room Adaption switch for adjusting the bass
5Connection panel (with installed connection jumpers)
6Base plate
7Bass reflex ports (with foam cylinders)
OVERVIEW OF THE B28

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4
5
7
7
6

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OPERATION MANUAL

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Setting Up the
Loudspeakers

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OPERATION MANUAL
LOUDSPEAKER ANGLED
approx. 2-3 metres distance
approx. 2-3 metres distance
approx. 2-3 metres distance
approx. 2-3 metres distance
approx. 2-3 metres distance
approx. 2-3 metres distance
LOUDSPEAKER NOT ANGLED

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B28 LOUDSPEAKER
Setting Up the Loudspeakers
CHOOSING AN INSTALLATION SITE
ATTENTION! DANGER DUE TO IMPROPER INSTALLATION
Please consider the following aspects when choosing the installation site:
$ Never use the loudspeaker outdoors.
$ Avoid exposure to direct sunlight, excessive heat, cold, moisture and dust.
$ Do not expose the loudspeakers to dripping or splashing water, and do not
place containers of liquid on the loudspeakers.
$ Never place open fire sources, such as lit candles, on the loudspeakers.
CAUTION! RISK OF INJURY DUE TO TIPPING OVER
If used improperly, your loudspeaker may tip over.
$ Always place the loudspeakers on a flat, sturdy surface. Make sure that the
loudspeaker is always exactly level.
OPTIMAL INSTALLATION POSITION
The distance between the two loudspeakers should ideally be 2-3metres. The space
between the loudspeakers should remain as free as possible.
The distance to the listener should also be about 2-3metres.
In a rectangular room, the loudspeakers should be placed at the shorter wall.
Where possible, the speakers should be set up in the “hard” acoustic area of the
room (against smooth walls and window surfaces) rather than the “soft” acoustic
area (where upholstered furniture, books and rugs may dampen the sound).
TREBLE AND SPATIAL IMAGING
You can influence the sound of your loudspeakers with respect to the
treble and the spatial imaging of the sound by the positioning
Loudspeakers not angled:
— Increased spatial imaging and wider soundstage
— Less pronounced highs
— Warmer sound
Loudspeakers angled towards the listening position:
— More precise imaging and soundstage
— More pronounced highs
— Clearer sound

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Connecting the
Loudspeakers

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B28 LOUDSPEAKER
Connecting the Loudspeakers
ATTENTION! DEVICE TEMPERATURE AFTER UNPACKING
If the temperature is too high or too low, this can cause the device to
malfunction.
$ After unpacking, leave the loudspeakers in the room for some time before
connecting them and putting them into operation.
SPEAKER CABLES
Burmester recommends using cables with a large diameter to connect the
loudspeakers to the power amplifier. A large diameter allows you to maintain the
damping factor of the power amplifiers for optimal control of the loudspeakers.
Best results are achieved by using original Burmester speaker cables, which have
the same electrical and tonal characteristics as the internal wiring of Burmester
loudspeakers and amplifiers.
For optimal results, use customised speaker cables with spade lugs.
ATTENTION!The insulation of the loudspeaker cable must
correspond to the original Burmester loudspeaker cable and must at least
meet the flammability tests according to VW-1. Ask your dealer for more
information.

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OPERATION MANUAL
CONNECTION AND OPERATING MODES
The B28 can be operated in two different modes:
1. classic mode, with one amplifier channel per loudspeaker
or
2. in bi-amp mode with separate control of the mid-high range and the bass.
1. CONNECTING THE LOUDSPEAKERS IN THE CLASSIC OPERATING MODE
In this operating mode, the connection jumpers at the binding posts stay in their
pre-assembled position.
Each loudspeaker is connected to an end stage channel via a 2-pole cable.
This means that a 2-channel (stereo) amplifier or two mono power amplifiers are
required.
ATTENTION! Turn off all components of your hi-fi system before
connecting the loudspeakers.
Connect the right loudspeaker to the amplifier’s right output.
Connect the left loudspeaker to the amplifier’s left output.
When connecting the loudspeakers, make sure that the connections have the correct
polarity.
It is important that you make all connections in phase:
— Positive output of the power amplifier (+) = positive input of the loudspeaker (+)
— Negative output of the power amplifier (-) = negative input of the loudspeaker (-)
ATTENTION! Do not switch your hi-fi system on again until you
are sure that all connections are correctly established.
Set your signal chain to a low volume first.