Burmester 948 User manual

948

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OPERATION MANUAL
Table of Contents
INTRODUCTION
The Concept 8
Storage 8
Intended Use 9
Permissible Operating Conditions 9
UNPACKING, CONNECTION AND USE
Unpacking the Device 12
Scope of Delivery 13
Functional Overview 14
Connecting the Device 16
Operating the Device 19
Important Notes 22
TECHNICAL SPECIFICATIONS 25

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Introduction

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OPERATION MANUAL

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948 POWER CONDITIONER
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 and maximum versatility. 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 any special requests you may have, no matter how
unusual. We love a good technical challenge.
We wish you an exceptional listening experience.
The Burmester Team

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OPERATION MANUAL
The Concept
Storage
— The Burmester 948 is the first high-end power conditioner that completely
isolates ahi-fi system from both high and low-frequency power line noises.
— Its active DC compensation (patented) eliminates low-frequency line noise,
whichcauses transformer hum and impairs the sound.
— The 948 is equipped with eight AC outlets (four filtered, four unfiltered)
forconnecting all the components of a hi-fi system.
— The 948 also has two power filters; this enables you to keep the power supplies
for your digital and analogue components separate.
— With the 948, you can also switch on your entire hi-fi system remotely.
— The system’s star-shaped earthing provides effective protection against earth
loops.
— Thanks to its extremely robust additional equipotential bonding conductor,
the948guarantees optimum earthing.
— The highly effective overvoltage protection protects both the 948 itself and all
connected devices from power surges.
— The 948’s switching display shows the current mains voltage or a DC component
inthe mains grid.
Please read this operation manual in full and keep it in a safe place.

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948 POWER CONDITIONER
Permissible Operating Conditions
Intended Use
Please take care to only ever use your Burmester device under the following
conditions:
Maximum altitude: 2000 m
Humidity: < 50%
Temperature range: 20-30°C
This device is intended for use in home audio systems.

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Unpacking,
Connection and Use

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OPERATION MANUAL
Unpacking the Device
sCAUTION: RISK OF INJURY DUE TO HEAVY WEIGHT
The device is very heavy and can cause injury if it falls.
$The device 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 device.
sWARNING: SUFFOCATION HAZARD
Your Burmester device is shipped in plastic bags to protect its surfaces.
$Keep these bags out of reach of children in order to prevent suffocation.
rATTENTION: DANGER DUE TO IMPROPER INSTALLATION
$Consider the following points when choosing where to position the device:
Never use the device outdoors. Avoid exposure to direct sunlight as well
as excessive heat, cold, moisture and dust. Ensure adequate ventilation.
Never place the device on an enclosed shelf. Do not cover the slots or
openings on the device. These are important for ventilation. Do not expose
the device to dripping or splashing water, and do not place containers of
liquid on the device. Likewise, never place open fire sources, such as lit
candles, on the device.
To avoid damaging the housing, do not use any pointed or sharp objects to
open the packaging.

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948 POWER CONDITIONER
Scope of Delivery
SCOPE OF DELIVERY
The scope of delivery for the device includes:
PLEASE CHECK THE 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 it; consult an authorised dealer instead.
WE RECOMMEND KEEPING THE ORIGINAL PACKAGING FOR FUTURE TRANSPORT,
MOVING, ETC.
1Packaging with power conditioner 948
1Equipotential bonding conductor
1Power cable
1Set of warranty documents
1Operation manual

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OPERATION MANUAL
FRONT PANEL
Functional Overview
1Conditioner LED indicates active conditioner function
2POWER LED illuminates when device is on
3Display indicates mains voltage in V or DC component in mV
4Stand-by LED indicates stand-by mode
5AC DC LED illuminates when display showing DC voltage
6Conditioner button activates conditioner function
7POWER button switches power conditioner on and off
8TEMP LED illuminates when operating voltage is exceeded
9Display button switches display on and off
10
AC DC button switches display from showing mains voltage in V to DC
component in mV

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948 POWER CONDITIONER
FRONT PANEL
REAR PANEL 230 V EUVERSION SHOWN
11 AC outlet MAINS OUT 1
12 AC outlet MAINS OUT 1
13 AC mains switch
14 AC input terminal
15 AC outlet MAINS OUT 2
16 AC outlet MAINS OUT 2
17 AC outlet MAINS OUT 3
18 AC outlet MAINS OUT 3
19 Remote input terminal for turning on the power conditioner remotely
20 Earth connection for additional equipotential bonding
21 AC outlet MAINS OUT 4
22 AC outlet MAINS OUT 4

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OPERATION MANUAL
Connecting the Device
CONNECTING THE DEVICE
Make sure the AC mains switch (13)is set to OFF. Connect the power cable’s device
plug to the AC input terminal (14). Then plug the mains plug into the wall outlet.
In order to ensure optimum listening pleasure, you should connect the side of the
mains plug that is marked with a dot, to the 'hot' phase of the wall outlet. The 'hot'
phase is also marked with a dot on the 948’s AC outlets. If you are having difficulty
finding the 'hot' phase of your AC wall outlet, please contact your authorised dealer.
CONNECTING THE EQUIPOTENTIAL BONDING CONDUCTOR
In order to ensure that it is safely connected to the earth when discharging
overvoltages, this device is equipped with an additional equipotential bonding
conductor.
This equipotential bonding conductor is required for the safe operation of the 948.
Connect the conductor to the 948’s earth connection (20)by simply plugging it in,
then connect the mains plug on the equipotential bonding conductor to a wall outlet.
All the connection terminals are located on the rear of the device. All components of
the music system must be switched off before connecting the device.

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948 POWER CONDITIONER
MAINS VOLTAGE
Prior to connection, check to see if the mains voltage specified on the back panel
of the device above the AC mains terminal matches the mains voltage for your
household.
WARNING: DANGEROUS VOLTAGES
Before connecting the device, make sure that the protective earth contact
in your mains socket is in operation. If the protective earth contact is
missing or not connected correctly, this poses a risk of fatal injury!
Contact a professional if you are in any doubt.
During operation, the AC outlets conduct dangerous voltages. Never touch
them when the power conditioner is connected. Always use prefabricated
power cables to connect the AC outlets.
WARNING: POWER CONNECTION
Use the three-core power cable supplied with the device to connect it to
the power supply. The protective earth contact must never be disabled.
At the factory, the mains voltage is set to the national standard for the
country in which you purchased your Burmester device.
If you intend to operate your Burmester device at a different mains voltage
to that set at the factory, you will need to send your Burmester device to
our Sales team or our factory in Berlin so that the mains voltage can be
adjusted accordingly.
If you are uncertain of the mains voltage at your installation site, please
make sure you check with your authorised Burmester dealer prior to
installation.

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OPERATION MANUAL
AC OUTLETSFILTERS
The device is equipped with eight AC outlets for connecting hi-fi equipment; these
are divided into four groups. The markings on the rear panel indicate which filters
need to be connected to which AC outlets (FILTER). If you wish to connect the power
filters to the AC outlets differently, please contact your authorised dealer.
The standard version of the device offers unfiltered mains voltage for the AC outlet
groups MAINS OUT 3(17, 18)and MAINS OUT 4(20, 21). The AC outlets in the
groups MAINS OUT 1(11, 12) and MAINS OUT 2(15, 16) have separate power filters.
The DC compensation affects all eight AC outlets.
The maximum output per AC outlet must not exceed 2,000 W @ 230 V, 1,550 W @
120 V and 1,300 W @ 100 V. The maximum permissible total output for all connected
devices is listed in the technical specifications at the end of this operation manual
(maximum power output).
NOTES ON CONNECTION
In order to optimise the operation of your 948 power conditioner, we recommend
connecting your audio equipment as follows (other combinations are also possible):
When using very powerful amplifiers with a continuous power consumption of more
than 500 W, we recommend connecting these directly to the parallel wall outlet.
Because it runs in parallel, the 948 power conditioner will also affect this outlet,
and thus all the devices connected to it.
MAINS OUT 1(FILTER1)
Preamplifiers, phono preamplifiers,
record players, FM tuners
MAINS OUT 2(FILTER2)
Digital devices, e.g. CD players, DVD players,
digital-to-analogue converters, dig. tuners
MAINS OUT 3and 4All types of amplifiers, incl. subwoofers

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948 POWER CONDITIONER
Operating the Device
sCAUTION: RISK OF INJURY TO CHILDREN
This device poses various injury risks if used improperly. Never leave your
children unattended with the device. This device is not intended for use
by children.
WARNING: DANGEROUS VOLTAGES
To fully disconnect the device from the mains, you have to unplug the
mains plug.
OPERATING CONTROLS
With the exception of the AC mains switch, all the operating controls are located on
the front panel. The device must be connected to the mains power in order to enable
operation. We recommend checking all the connections before switching it on.
AC MAINS SWITCH
The AC mains switch (13), which switches the AC power to the unit on and off,
is located on the rear panel above the AC mains terminal. When the switch is moved
to the ON position, the transformer is connected to the mains, the AC outlets are
switched on and the stand-by LED (4)lights up.
POWER BUTTON
The POWER button (7)switches the power conditioner on and off. This can only be
done when the AC mains switch is in the ON position.
The display (3)lights up to indicate when the device is switched on. When
the device is switched off, the stand-by LED (4)lights up to indicate that the device
is in stand-by mode.
PLEASE NOTE: ALWAYS SWITCH THE DEVICE OFF USING THE POWER BUTTON BEFORE
SWITCHING THE AC MAINS SWITCH TO OFF.

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OPERATION MANUAL
CONDITIONER BUTTON
Pressing the conditioner button (6)switches the power conditioner’s automatic DC
compensation on and off. The conditioner LED (1)indicates when this function is
active. The DC voltage figure shown on the display (3)will be reset to zero.
AC DC BUTTON
Pressing the AC•DC button (10)toggles the power conditioner’s display (3)
between showing the mains voltage (AC•DC LED (5)off) and the DC component of
the mains voltage (AC•DC LED (5)on).
DISPLAY BUTTON
The power conditioner’s display ( 3 ) can be switched off using the display button ( 9 ).
All of the device’s functions will still remain active. Pressing the display button ( 9 )
again will turn the display back on.
REMOTE INPUT
The REMOTE input terminal (19)is located on the rear panel of the device,
beneath the AC input terminal (14). This input enables you to switch the 948 power
conditioner on and off from your preamplifier or digital-to-analogue converter.
This function is only available when the power conditioner’s REMOTE input terminal
is connected to the REMOTE output terminal of the preamplifier or the digital-to-
analogue converter via a suitable cable. Please note that we do not include this
remote cable in the scope of delivery because the required cable length varies for
each individual customer. You can obtain a cable of the required length from your
authorised Burmester dealer.
The devices that are connected to their respective AC outlets will be turned on at
the same time. The markings on the rear panel indicate which AC outlets the remote
on/off function needs to be connected to (SWITCHED). In the standard version,
the remote function only switches the power conditioner on and off.
For other remote on/off function options, please contact your authorised dealer.