Author: Multicare

Bang & Olufsen classic service centre. Repairs and refurbishment to both old and new.
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BeoLab 1

BeoLab 1

New and Improved Sound on BeoLab 1

After purchasing a pair of brand new Beolab 1 I was dissatisfied with the sound (as I expressed in the BeoWorld Forum). Bang & Olufsen seemed to be unhelpful and a little arrogant in the matter, as to helping me resolve the issue.

In my opinion these big “pillar” speakers sounded razor sharp, ice-cold and screamy when playing CDs of good dynamic qualities.

As a technician I refused to accept this. I started researching everything I could about these speakers.

After having spent some time researching, I discovered three potentiometers on the active X–over located behind the covers (at the bottom), which controls each of the amplifier units with 3-4 Db. I started experimenting with these.

I quickly discovered that, when turning a potentiometer left, an element played less, and when turned right it played louder. I wrote down all the original values and continued experimenting.

After a little while I was able to localise each screw and what element it symbolised:

I have now customised the values on the screws and the result: a little more bass and less ice-cold and screamy sound from the mid-range element!

These customised changes have allowed me now to enjoy a little more listening, instead of getting worn out by the continuous metallic, cold, surgical and artificial sharp sound (especially at high volumes 50-56).

 

Warning: Before attempting any form of modifications, please be aware that modifications carried out by none B&O personnel could result in loss of warranty (as posted by our moderator). Further more, if you make the modifications be sure to “mark” the positions of the “damping bricks” as to where they are located in the cabinet. The following modifications are based on previous modifications made to my BeoLab 1s (where I changed all three potentiometer values).

Modifications carried out with the following setup: BeoSound 3000 and BeoLab 2.

Even with my previous modifications (to the potentiometers) I was never 100% satisfied with the outcome. Though the modifications (in my opinion) were a great improvement, I decided to see if any other modifications could be carried out (as to improve the sound).

So, in my quest for perfection, I recently decided to disassemble my BeoLab 1s.

The first thing I noticed was that very little damping material had been used to damp the reflection of the inner-waves. As illustrated on the picture below, only four small “damping” bricks and one very thin sheet of damping material (at the bottom) are used.

As you can see on the picture, no damping material has been used on the upper part of the speakers (where the upper woofer is located), which seems very odd to me.

Now if you disassemble other speakers of high-end brands like B&W, Tannoy etc you would see that the speakers are filled with damping material. And even as insignificant that this may seem to many of you, I can assure you that it has a great impact on the “sound experience” from a speaker.

So I decided to modify the BeoLab1 with high-quality damping material, enough for 30 – 40 litres. And filled the whole cabinet with it (as illustrated on the bottom picture):

Before assembly, I moved the “bricks placement” to maximum width to see how the woofers sounded. When placed far apart, the woofers sounded softer (much more like the Pentas) and when placed close together (like originally mounted), it sounded punchier! So I decided to experiment with the placement of the “bricks”, and eventually found a satisfying position for them.

With the original placement of the “bricks” the woofers theoretically only had about 2-3 litres of volume.

These customised changes, have made my BeoLab 1s much smoother and I think I’m nearing pure perfection.
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Datalink

Datalink

DataLink

Datalink was the first digital language developed by Bang & Olufsen and allowed various components of a music system to work in conjunction with each other. It used the addition of two extra pins to a standard 5-pin DIN plug via which a digital code was sent.  It was a way whereby products could ‘talk to each other’. Datalink is the forerunner of Beolink®. The DIN connector has two pins for control signals, one pin as an audio ‘common’, two pins for stereo ‘in’ and two more pins for stereo ‘out’. The control pins are referred to as Datalink pins and these carry signals to do the following:

  • transfer program-location data to the primary component to show up on the primary unit’s console, two-way remote controls, display-equipped BeoLab speakers or BeoVision TVs that are installed in other rooms and part of their Beolink ‘multi-room’ audio-video infrastructure
  • ‘open up’ the audio inputs on the BeoMaster or BeoCenter if the local ‘PLAY’ key is pressed on the unit
  • accept control signals to control the device from either the primary unit or a remote control

The original idea was seen in a prototype system called BeoSystem 6000 which comprised a stereo receiver, stereo tangential tracking turntable and an advanced auto reverse reel to reel tape recorder. This system was never put into production but styling cues from the BeoMaster led to the BeoMaster 6000 quad receiver, the record player became the BeoGram 4000 but the BeoCord was dropped after only 6 examples were made. The idea of each component being able to talk to each other was postulated but no system was put into production based on this design.

The first production model with any type of link system was the BeoMaster 2400 which, when connected to a BeoGram 4004, allowed remote control of the BeoGram via an ultrasonic remote control. Unlike previous systems, all the major controls on the BeoGram and the BeoMaster were electronic and hence suitable for remote operation The system was later to include a radial BeoGram as well, the BeoGram 2402. This system however was a one off and was incompatible with later versions of Datalink. The BeoGram and receiver were connected via a captive 7-pin lead on the BeoGram.

Datalink first was seen in its full glory in the BeoLab 8000 system in 1981. Unlike the earlier system, full remote control of all the different sources was now possible, with play, record, cueing, programme selection and volume control all possible at the press of a single button on an infra red remote control. The system also allowed one to press a start button on any of the sources which would switch on the BeoMaster or vice versa. All the sources were attached to the BeoMaster by 7-pin DIN leads. An important point was that the BeoMaster remained the hub of the system with all commands from the remote control travelling via the infra red receiver on the BeoMaster and Datalink being the messenger to the source.

The system was refined over the years and eventually allowed all functions to be controlled remotely as seen in the BeoSystem 7000. These days, the system has fallen into disuse but the language continues in a different guise as MasterLink. No longer speaking between components in a single audio system, MasterLink connects systems together. Older systems can still communicate with the aid of the 1611 converter which translates Datalink to the newer codes.

Main Datalink audio products:

BeoMaster2000  **45007000
 2400 / 2400-250008000
 30005500 
 33006000 
 35006500 
BeoCord200050006500 ***8004
 33005500  ***7000 ***9000
 350060008000 
 450060028002 
BeoCord VCRVHS 91VHS 91.2
BeoGram1900 / 190245006002*9000
 2000500060069500
 300050056500 
 330055007000 
 35006000 *8000 
 400260008002 
BeoGram CD33005500
 35006500
 45007000
 CD50 
BeoCenter23009000
 25009300
 80009500
 8500 
BeoSound4000Ouverture

Notes:

* Datalink communication in the BeoGram 6000/6002 is one-way, which means that pressing /PLAY/ on BeoGram 6000/6002 will not start the BeoMaster/BeoCenter

** BeoMaster 2000 cannot be operated by remote control

*** BeoCord 5500/6500/7000 have some special functions, for example tape counter and adjustment of recording level via remote control, which can be only operated with BeoMaster 5500and MCP5500

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Master Control Link 2 Connections

Master Control Link 2 Connections

Introduction / Speaker Link

The Master Control Link connection at the Speaker 2 output sockets of a BeoMaster/BeoCenter. Connection from this point is made to the MCL ABLI or MCL2AV relay box via a special 7-conductor cable with 3-pin speaker plugs on one end and bare wires on the other.

Signals

The MCL cable carries speaker level signals, left and right. Along with the speaker signals, a two-way data signal is carried for communication purposes between main room and local room, as well as display data for BeoLab Penta or BeoVox panel speakers. The BeoMaster/BeoCenter also supplies 7 volts DC which is transferred via the link cable to the relay box.  This power source is used only by the MCL 2ABLI.  The MCL 2AV receives its power either from a separate power supply or from the MCL 2P amplifier.

Speaker Link

Speaker Link defines the connections between a BeoMaster/BeoCenter Speaker 1 output and a pair of active or passive speakers in the main room.

Signals

Audio signals are transferred at speaker level. The top pin of the socket is the speaker ‘hot’, the blade the speaker ground.  The bottom pins are used to transfer data and data ground from the BeoMaster/BeoCenter to BeoLab active speakers.

Connection to BeoLab speakers via speaker link must be done with shielded speaker cables.

PowerLink

PowerLink defines the connection between a BeoSystem or MCL2AV with 8-pin DIN PowerLink sockets and BeoLab active speakers or the MCL2P power amplifier.

Signals

The PowerLink connection carries both left and right pre-amp output signals.  Additionally, the PowerLink connection transfers data signals for the BeoLab active speaker (and status display for those active speakers fitted with this LED readout). The remaining connections provide turn on and protection signals (APHC) for the amplifier.

PowerLink outputs may be adapted to standard RCA outputs for driving non-B&O power amplifiers using a DIN to RCA adaptor number 6270316.

The remote mains switch  may be activated by the PowerLink outputs using DIN to DC female adaptor number 9627100.

Note that there are two thicknesses of PowerLink cable: the thick cable should be used for source display on active speakers with such displays (like BeoLab Penta, BeoLab 4500, BeoLab 5000); the thinner cable is unable to do this.

Audio Link

Audio link connections are those which take place between an audio master (like BeoMaster or BeoCenter) and its program sources: BeoCord, BeoGram record deck and BeoGram CD.

Signals: BeoGram Record Decks and CD Players

Both analogue stereo signals and two-way Datalink codes for operation and display are transferred. For BeoGram turntables and CD players the analogue signals are one-way, from the source to the Master. These signals terminate at pin 3 (left) and pin 5 (right) of a 7-pin DIN plug. Pin 2 is the signal ground. BeoGram 5500 and 9000 transfer signals at phono level. All other products transfer signal at line level.

Signals: BeoCord audio

In addition to the above, audio signals are transferred to the BeoCord from the audio master for the purposes of recording.  These signals take place at pin 1 (left) and pin 4 (right) of the 7-pin DIN plug. All signals are at line level.

BeoCord signal cables may be extended via extension cable number 6270338.

Audio Aux Link

Audio Aux Link is the connection between a Bang & Olufsen MX 5000 television and a Bang & Olufsen Beolink compatible audio system. This connection is also known as a Beolink connection.

Signals

Both analogue stereo sound signals and two way Datalink codes for operation and display are transferred. Audio signals are in two directions. This gives the ability to play audio signals from the video system through the audio system, as well as allowing programs from the audio system to be played through the MX 5000 TV set.

The Audio Aux Link connection also permits sound from the VX5000 VCR to be played through the audio system and sound from the audio system to be recorded on the VX5000. This connection takes place automatically whenever a VX5000 is connected to an MX 5000.

In practice, the Audio Aux Link connection is identical to the Audio Link connection for BeoCord audio. Therefore, the same types of cables and extensions which are used for two way Audio Link connections may be used for Audio Aux Link connections.

AV Link

AV link describes the connections between the MX5000 TV and the VX5000 VCR.

Signals

The AV link transfers audio, video and data signals between the MX5000 TV and VX5000 VCR. A special cable with 21 pin SCART plug on each end is used to accomplish the AV link connection.

Audio signals are transferred in both directions between TV and VCR. This allows sound recording from the audio system via the Aux Link connection to the TV set, as well as playback of stereo sound from the VCR through the TV or the audio system.

Composite video signals are transferred from the TV to the VCR. This allows recording from a second VCR, camcorder or other video source.
Model Audio Link AV Link Audio Aux Link Power Link Speaker Link Master Control Link
BeoMaster/BeoCenter
BM4500 * * * * *
BM5500 * * * *
BM6500 * * * * *
BC9000 * * * *
BC9500 * * * * *
BeoCord cassette recorder
BC3300/4500 *
BC5500/6500 *
BeoGram record deck
BG4500 *1
BG6500 *1
BG3300/4500 *
BG89000/9500 *
BeoGram CD
CD3300 *2
CD4500 *
CD5500/6500 *
Master Control Link 2
MCL2A *
MCL2AV * * * * *
BeoLab active speakers
Penta 1 *
Penta 2 * *
BeoLab 3000/5000 * *
BeoVox passive speakers *
MX5000 TV * * * *3
VX5000VCR *
Key:
1 = built-in phono preamp
2 = Special Datalink code for BM3300 only
3 = 2-pin only
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Technology Profiles

Technology Profiles

BeoSound 9000

Normally only a few Bang & Olufsen products and technologies are patented. The investments patenting require are simply unnecessary, as no real threats exist within the current market of consumer electronics. Usually the distinctiveness of Bang & Olufsen products (concepts, materials used, the craftsmanship and overall quality) is very far from the reality, large scale manufacturers of consumer electronics have to deal with.

However, as BeoSound 9000 is probably one of the most innovative audio products ever marketed, it was decided to patent the uniqueness of Bang & Olufsen re-thinking the CD media. The patents cover two issues; the basic idea of the concept and part of the advanced technology controlling the CD player mechanism.

The basic idea
The primary principle distinguishing BeoSound 9000 is playback of CDs, visibly placed in a linear fashion. Instead of transporting the CD to the laser pick-up, the laser finds its way to the CD, speedily and elegantly. These principles provide a new way of using – and living with – compact discs (see above picture).

Patenting ‘the basic idea’ limits any attempts to plagiarise the basic principles of BeoSound 9000. As the versatile approach might be applicable to future types of compact disc based equipment, also this aspect is covered by the patent.

The feature
Besides expressing a brilliant idea, BeoSound 9000 is a remarkable technological achievement. One of the most prominent features, the automatic positioning of CDs, is a unique compound of a simple, yet powerful idea, combined with advanced digital technology.

With auto-positioning, BeoSound 9000 is capable of detecting and memorising a specific angular position for CDs. After playback, a CD returns to a position chosen by the user; most likely a position where the textual information printed on the CD is readable.

A small piece of information on the CD, the so-called P-bit, is used as the point of reference for the angular positioning. Using the location of this P-bit information, present on virtually all audio CDs, software-controlled tachometers enable a very precise positioning of discs after playback. Automatic positioning of CDs by use of the P-bit information is a Bang & Olufsen copyright.

A patented concept will prevent other manufacturers using the same approach. In fact, the ‘simple’ idea of placing compact discs linear in a multi-CD player cannot be copied without violating the copyright. Without competition from plagiarising products, BeoSound 9000 cements its position as a unique alternative to traditional multi-CD players. Finally, patents are significant communications parameters. Most people are aware of the fact, that special efforts have been made to design a product, that has been granted a patent.

BeoVision 4

The idea behind this is to allow users to integrate BeoVision 4 and BeoCenter 2 together with a pair of BeoLab active speakers as a 2-channel bedroom ‘TV’ system. This alternative to the classic BeoVision 4 paired with BeoSystem 1 as a full surround system, serves individuals who are not interested in surround sound but just wish to use the BeoVision 4 for say, a bedroom.

The BeoVision 4 TV solution can be configured in one of two ways:

System 1: Bedroom TV system w DVD/STB
1 BeoVision4 42”
1 BeoCenter 2
1 Selected Cable STB or SAT receiver
2 BeoLab speakers
1 Crestron pre-programmed controller
1 Lintronic IR>RS232 converter
1 Avant IR receiver

System 2: Link room TV system w STB
1 BeoVision 4 42”
1 BeoLink ML Active kit
1 Selected Cable STB or SAT receiver
2 BeoLab speakers
1 Crestron pre-programmed controller
1 Lintronic IR>RS232 converter
1 Avant IR receiver

System 1 Offers a simple A/V option to customers looking for a 2-channel bedroom TV, with Beo4 operation of all basic functions.

System 2 Offers a Link room TV system allowing use of Audio sources from BeoLink ML Active kit, as well as control of one selected STB for TV viewing, all controlled easily by BV4.

Operation:

Operation can be carried out via Beo4 in a fashion similar to BeoSystem 1, however, there will not be overlay menus for the sources or surround capability. Bang & Olufsen supports one of 11 selected STB or SAT receivers pre-programmed into the Crestron controller.

These are intended to be 2-channel TV solutions. For digital surround sound, for the incorporation of additional sources, for superior picture quality improvements etc., then BeoSystem 1 is recommended.

BeoVision 4 42” TV kit (Item number: 0894394)
This kit includes:
1 x Crestron pre-programmed controller
1 x Lintronic IR>RS232 converter
1 x Avant IR receiver
Assorted RS232 control cables & power supplies

Required Cables :

Item number: 0894395
YPbPr > VGA 15 pin Dsub adaptor
YPbPr from SAT/STB to BeoVision 4

Item number: 0894396
Scart > VGA 15 pin Dsub adaptor cable
YPbPr from BeoCenter 2 to BeoVision 4

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Problem Solving

Problem Solving

How do I clean the tape path?

The tape path, that is, the tape heads, pinch rollers and other parts which the tape touches during playback or recording, should be cleaned every now and then to avoid dust and fluff build-up.

It is a good idea always to clean the tape path prior to making a recording. Use a tape head maintenance kit or simply a cotton wool stick dipped in a cleaning fluid (preferably iso-propyl alcohol which will not harm plastics if spilt) intended for this purpose.

The cleaning process must be carried out while there is no cassette in the tape compartment.

Press [A.TAPE]. The tape head and the right-hand pinch roller are now exposed, enabling you to clean them.

Press [TURN]. The left-hand pinch roller is now exposed.

Press [Stand-by] or switch to another source when you have finished the cleaning process

Which remote control will work my equipment?

First ascertain that your equipment can be controlled by remote. The Beocenter 2200 looks the right design and era but is completely manual as an example.

If it is remote control, then there are various families of remotes to consider.

The very first B&O remotes used ultrasound rather than infra-red and were seen initially for use with the Beomasters 2400 and 6000 and Beovision 6000. Each remote was unique to the individual product and could not really be used to operate any other device.

The ultrasound system was improved in the later Beovision Control Module which was used for the Beovision 3802, 4402 and 6002. This was a superb remote designed so that the user could identify buttons by feel as well as appearance.

These remotes were superseded by the first infra-red devices though the ultimate goal of audio-visual integration was still not realised. The Video remote, known affectionately as the Mars Bar, allowed both TV and video to be controlled and was a lovely metal alloy device. It controlled the Beovision 8800 series sets and its derivatives. It was also used in the first of the MX range, the MX2000.

Meanwhile the audio remotes were becoming complicated! The Beocenter 7000 had been released with its own hand held infra red controller and this design was now used for all the different audio systems. However the codes used were not common so to all intents, you needed the correct controller for each product. The Beomaster 8000 was the next to be introduced and this remote featured far more controls than that for the Beomaster 2400, with the ability to control both Beogram and Beocord as well as change balance and switch the filters in and out. Radio channels and volume were of course also catered for. The same design was used for the Beomaster 6000 that followed though the functions were subtlety changed and if used with the other product, not all keys behaved as advertised!

Similar style controllers were then introduced for the Beomaster 3000 and 5000, though again, the codes varied. Mention must also be made of the terminal for the Beogram CD50, the only stand alone remote for a CD player made by B&O which necessitated the fitting of a board in the CD50. These are rare.

The last of this style of remote was that for the Beomaster 3300 and was the most interesting as it now possessed the codes that would serve as the basis of all remote codes used by B&O from then to the present day: a muted start to a revolution in control.

This was we had been waiting for and within the year we had the first of a completely new range of remotes which were to become the Beolink 1000. To start with we had the Audio Terminal, the Video Terminal and, most interestingly, the AV Terminal. The last operated both audio and video systems realising the dream of one remote to control them all!

Within a short time, the remotes were simplified and the Beolink 1000 was born.

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Caring for your Bang & Olufsen

Caring for your Bang & Olufsen

How do I clean my Bang & Olufsen product?

Always try a diluted amount of soap and water first, applied to the surface of your product with a very soft brush. Use a vacuum cleaner attachment first in order to remove excess dust that may have accumulated.

For wood trim on your products then use a teak oil (or similar) applied sparingly with a soft cloth. Wipe off any excess after a minute or two and gently buff up.

For metal trim on older products this is generally brushed aluminium. To clean these again use a soft cloth and warm soapy water. Dry afterwards. This should remove most, if not all of the dirt and grime that has set in over the years.

More modern B&O products use either a shiny aluminium or stainless steel. Be very careful when you clean these as you can leave behind little ‘skid marks’ on their surfaces.

For plastic trims (for example the tops of record decks or digital readouts) again use a very soft cloth with just a small amount of soapy water applied to it. Dry off. If any marks or stains persist then try using silver polish. Apply the silver polish (Silvo is a good make) to a small out-of-sight area first; if you are satisfied then continue with the rest. This can be a long and laborious process, but it’s well worth it! Note that you will only remove minor, superficial scratches. For deeper scratches and gouges then you will have to either replace the offending part or learn to live with it!

For glass, a product to use (at least for those living in France) is St Marc Zerotrace Spécial Vitres Anti-coulure. This leaves no smears on the glass and leaves it as shiny as the day that it was manufactured! For those elsewhere, a good quality spray Glass Cleaner and Kitchen Roll does the trick – but be very careful with products that have Anti Reflective Glass Coatings.

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PIN

PIN

Table of Contents

PIN your products down!

You naturally expect a lot of the Bang & Olufsen brand, and it is central to the Bang & Olufsen philosophy that our products surprise and delight every day, every time they are used, for the lifetime of the product. An important element of this pleasure of ownership is security – not least the physical security of the product in your home, and that it will remain there, for as long as you choose to own the product!

Unfortunately, many unsavoury and criminal types also have great expectations of the Bang & Olufsen brand, and in countries where there is a high level of brand recognition across all segments of society, such as Denmark, thieves cannot help but take an unhealthy interest in our products – and where they can find them.

Protect your product with a PIN code

To combat this threat and enable owners of our products to rest easy when on holiday or otherwise away from home, Bang & Olufsen offers PIN code protection on its products as an added security against theft. The PIN code works by ‘locking’ the product for use, if the power is switched off for more than preset amount of time.

PIN codes were introduced in 2000, and the first product that was tested in the Danish market was BeoSound 3000. By 2001, PIN codes were introduced to most products and to all markets, and a majority of BeoVision televisions, BeoSound 9000, BeoSound 3200, BeoSound 4, BeoCenter 2 and BeoLab 5 are PIN code protected.

The introduction of PIN code protection of Bang & Olufsen products may have reduced the number of thefts of Bang & Olufsen products from private homes, but the number of organised thefts of the products from warehouses, retails outlets and during transport increased. The criminals were reorganising! To combat this, PIN codes were set ex factory from 2003.

Change PIN Code

It is easy for the customer to change or personalise the PIN code, and if the PIN code is forgotten, it is always possible for the product to be unlocked, because Master Codes for each product are kept on a secure server at Bang & Olufsen headquarters in Struer, Denmark. Only your retailer can request access to your product’s Master Code – and this is an added security.

In Denmark, burglaries of Bang & Olufsen products fell by almost 20% after PIN codes were introduced. Of course, it is difficult to say that PIN codes were they only cause of the fall! Nevertheless, brand recognition also worked in our favour: Bang & Olufsen Scandinavia has had great success printing ‘PIN code protection’ stickers for Bang & Olufsen owners to place in their windows or on doors, to remind thieves they ought to look elsewhere.

What is the difference between PIN code and Master code?

The product has a 4-digit PIN code which is activated from factory. When you receive your product, you will also get the factory PIN code from your Bang & Olufsen retailer.

The PIN code must be entered if the product has been disconnected from the mains for 15 to 30 minutes. This means that if a product is removed from your house and thus disconnected, it cannot be used until the correct PIN code has been entered.
You can change the PIN code at any time to a 4-digit code of your own choice. Please refer to the product’s user guide.

The Master code is required if you forget the PIN code and is only available via an authorised Bang & Olufsen retailer.

How do I get a Master code?

If you have forgotten your PIN code, you need to contact your nearest Bang & Olufsen retailer who can assist you in getting the 5-digit Master code by post or e-mail from Bang & Olufsen headquarters.

Once this code has been entered, your product is operational again, and the PIN code system is disabled.

Please refer to the product’s user guide on how to enter the Master code and to enable the PIN code.

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BeoPlayer/BeoMedia/NMUSIC Issues

BeoPlayer/BeoMedia/NMUSIC Issues

What do I need to play mp3/Digital Music at Home?

The easiest solution is the all-in-one BeoSound 3200 that comes with a hard drive that can store up to 396 CDs. The most common solution is to use a PC with the freeware BeoPlayer, which is a program that makes navigating easy. Please note that Bang & Olufsen refer to MP3 or digital music as “N.MUSIC” and Internet radio as “N.RADIO”.

To get the music from the PC to your BeoLink network there are basically two solutions today:

Use the BeoLink Media (aka BeoMedia). This is a black box that connects to any BeoVision with a SCART connection (or DVI-I), and you have the option of either an Ethernet cable or a wireless connection between the BeoMedia and your PC. BeoMedia allows you to navigate through photos, music files and Internet radio stations with the use of the TV screen and the Beo4 remote.

The most common method of distributing N.MUSIC is with a product called BeoPlayer PC2. This is a black box that connects to your PC and is equipped with a MasterLink connection for your BeoLink network. To be able to activate the BeoPlayer PC2 and enjoy N.MUSIC in any other room of the house the following requirements must be met:

Your BeoSound music system should be N.MUSIC compatible. The following music systems are compatible (or can be upgraded to be): BeoSound 3000, BeoSound 3200 and BeoSound 9000 and the BeoCenter 1 and 2. Please note that the upgrade of the BeoSound 9000 MK1 model is very extensive, while the others simply involve replacing a chip

If you set the BeoPlayer PC2 to option 2 (Audio Master) you do not need a compatible BeoSound music system, but you will need a BeoVision with N.MUSIC. The following video systems are compatible (or can be upgraded to be): BeoVision 3-32, 4 (with BeoSystem 2), 5, BeoVision 6-26, BeoVision 7-32, BeoVision 7-40 and the Avant RF (2002+) and the BeoCenter 1 (since October 2002). Please note that you can let the BeoPlayer PC2 act as Audio Master in a BeoLink network without any BeoVisions at all.

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Beolab/Beovox

Beolab/Beovox

Can I use non-B&O Speakers?

Yes. With the older systems with a built in power amplifier, you may use any passive speaker from any manufacturer.

The newer systems, however, have no power amplifier fitted as the power amplifier is now found in the B&O speaker, as this allows the speaker and amplifier combination to be optimised. Therefore you will need to provide a power amplifier for any passive speakers you wish to attach. There are a number of ways of doing this but the simplest is to buy a B&O external amplifier that will make your passive speakers react in the same way as B&O speakers.

You would normally use a Powerlink to Amplifier cable to connect from one of the Powerlink outputs on your B&O audio system or TV to the stereo RCA inputs of the amplifier, then use normal passive speaker cables between the amplifier and the speakers.

What is an Active Speaker?

A proper active speaker is one that is fed non amplified sound, the sound is then split into the various frequencies required by the drive units and is then amplified by a power amplifier dedicated to that particular drive unit.

This allows very close matching of drive unit and amplifier and allows the cabinet to be much smaller as the amplifier response can be tailored to match the cabinet frequency response. The frequency response can also be made to match that of the drive unit so the final sound should be more linear than with a passive speaker which has to cope with any amplifier attached to it.

The earliest Beolab speakers are not actually active. The Beolab Penta is better described as a powered speaker as it has a power amplifier built into the base which produces a flat frequency response and then this is fed to a passive crossover before passing to the drive units.

The Beolab 3000, Beolab 4500 and Beolab 5000 were also powered speakers but interestingly, the power amplifier produced an output with a non linear output designed to compensate for the reduced bass response of such a narrow speaker.

What do the Potentiometers on the front do?

These are the adjustment screws that are used by the factory to fine tune the speakers to ensure a flat frequency response. they are also used if you are unlucky enough to require a new drive unit to match the amplifier to the new unit.

Some customers like to alter these themselves and they are your speakers to do with as you wish. However remember that B&O have spent a fair amount of resources delivering your speakers to you in what they regard as perfect balance. The advice is to twiddle at your own risk!

How do I work out the best place to put my speaker

Entire books have been written about this topic, so the following advice should just be considered as a starting point; exact positions will vary depending on your room acoustics and choice of loudspeakers. The following advice is suitable for either stereo speakers (ie. 2 channel) or the two main front speakers in a 5.1 or 7.1 channel surround sound system. Good speaker positioning improves the sound quality and stereo image, so that instruments sound more lifelike and appear to come from different parts of the stage (as they would sound at a live concert).

As a starting point, locate the “tweeter” or small high-pitched driver in the speakers (Just play some music with plenty of rythym and listen for where the cymbals appear to come from!) These drivers should normally be positioned at about ear level when you are sitting in your usual seat (or standing up dancing!)

Measure from your usual listening position to the front wall of the room where the speakers are placed (ensure that they are in front of you, not to the side or behind you) This distance should be roughly the same as the distance between the speakers.

Now look at the back panel of the speakers. If there is a hole in the back (known as a bass port) or a grille cloth on the back (covering a bass driver), then the speakers should normally be placed away from the front wall of the room. If neither holes nor grilles are present, then the distance from the front wall is less important. The distance the speakers should be placed from the wall for best effect will vary, but 50cm (0.5m) is usually a good starting point for most speakers. Listen to some music you know well with a clear bassline and try various positions to see which gives clear, realistic bass notes that fit in well with the rest of the music.

Finally, ensure that the speakers are solidly mounted on suitable brackets or stands (for smaller speakers) or securely placed on the floor (for taller speakers). Try pointing the speakers directly at your listening position, straight at the back wall and then try them angled inwards to point at a position about 50cm in front of your listening position. This will alter the positioning of instruments “on stage” and you should be looking to hear the lead singer clearly in the centre, with backing vocals and instruments spread evenly between the speakers.

Above all, there is no “right” or “wrong” way to position your speakers, so feel free to experiment and find out what works best for you.

How can I test the bass response of my loudspeaker

First, find or buy a cable to connect your audio system to a device with YouTube!

Second, run the following bass test video on YouTube and listen. The frequency of each successive note is announced, so you can work out the limit of your audio system from the point where the tones disappear – the results may surprise you!

For reference, the lowest note on a Tuba, Bosendorfer Imperial Grand Piano and most cathedral pipe organs (C0) is 16.35 Hz, although few modern pianos go lower than 27.5Hz and a four string double bass “only” reaches down to around 41Hz.

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BeoGram

BeoGram

Where to find a Cartridge/Stylus for my BeoGram?

BeoWorld recommends Sound-Smith. This is a US-based company and deals mail order through the Internet. They obtained official recognition from Bang & Olufsen in 2003 to manufacture replacement B&O combined styli/cartridges..

Which Stylus for Which Deck?

See above,  visit their website to see compositable cartridges 

Which BeoGram will work with my System?

The important thing to remember here is that the output from a magnetic record player cartridge is at a lower level than that of other sources and is also skewed in such a way that it would sound very tinny if played directly.

Therefore a small pre-amplifier is required which will amplify and equalise the signal. This is known as an RIAA.

The RIAA is only required in one location. Modern B&O systems do not have one in the main system so one will be required in the BeoGram or fitted externally. The BeoGram 3500, BeoGram 4500, BeoGram 6500 and BeoGram 7000 all have RIAAs fitted as standard.

Which Beogram turntables can be wall-mounted?

Bang and Olufsen produced an excellent wall bracket for their Beogram record players in the 1980’s that seemed to disappear under the turntable, leaving the Beogram seemingly suspended in mid air. Sadly, these are no longer in production and they are now very rare.

My radial arm deck does not lift at the end

The problem is a small brass pin that is sticking. You will need to disassemble the BeoGram.

Remove the platter, cartridge and the arm counterweight so that there is nothing of weight around. You now need to remove the lid. There are 6 screws on most radial BeoGrams that this problem affects. Three hold the lid onto the frame and three hold the torsion spring for the lid. Try to undo the ones holding the lid on as replacing those with the torsion spring is frustrating to say the least.

With the lid off, you now need to invert the deck – you will need to support the deck so the arm is not damaged. You can then remove the base which is held on with two captive screws. Loosen these – they do not need to be fully removed – and you can release the base.

You can then see the deck automatic mechanism – see the attached picture. The brass pin is arrowed. This needs to be lubricated – sewing machine oil is the best. However you will need to free this first! The amount of effort will vary but try small and work up! Penetrating oil may be required and some owners have had to disassemble the whole mechanism and use pliers to free the pin!

All are agreed that sewing machine oil will be required to ensure long service following reassembly. Only use a little though or you will attract dirt.

BeoCenter 2300 clock keeps resetting itself

You need to upgrade the Software to Version 1.2 in order to rectify this problem.

This upgrade available from your nearest Bang & Olufsen dealer.

BeoCenter 9500 - hums

B&O recognise the problem and came up with a particularly high tech approach.. Special feet! Part number 3103347 !!

Alternatively cut two squash balls in half and use them as feet. The hum is amplified by the surface the unit sits on and de-coupling it helps – honestly!!

Clearly there will still be some hum but it does reduce a lot.

BeoCenter 9500 - Speakers make noises when switching on/off

The DC supply voltage has not stabilised before the signal is sent to the speakers.

There is a service kit available if this bothers you though, and the later BeoSounds actually have a longer delay before the signal is sent so make no noise!

BeoSound 1 CD makes a bump noise when cooling down

The main Printed Circuit Board expands when hot and contracts when cool.

Tightening the retaining screw will fix the problem, but if you are not confident with electronic products we would of course advise taking it to your local Bang & Olufsen Service Centre!

BeoSound 1 CD 'whines' in stand by.

This is a problem with the power supply.

This needs to be repaired, please contact your nearest Bang & Olufsen Dealer.

BeoSound 2 won't write to my SD card.

Often this is because the SD card has been used in another device like a camera.

The card needs to have all hidden files deleted. The BS2 will not do this through simple formatting, so you will need to use a separate card reader.

BeoSound 3 - slight shock from it

There could be a very slight leak current in the older chargers.

BeoSound 4 / BeoSound 2 - SD cards recorded on my BS4 don't play on my BS2

Some tracks can be missed on a BeoSound 2 Personal Mp3 player when playing an SD card recorded on a BeoSound 4. Newer software on the BeoSound 4 should resolve this.

BeoSound 9000 - The CD carriage won't move

The circuit controlling the movement of the CD carriage has a built-in safety function which protects your fingers, etc. from being hit by the fast moving carriage.

This circuit depends on light/reflections, and works via opto-coupling devices built into the two small ‘pegs’ . When the glass door is opened, or if something interrupts the light circuit, the carriage slows down in speed, and finally comes to a halt. Over time dust may build up and thus reduce the light emitted to and from the opto-coupling devices.

Dust particles on the inside of the glass door may also cause extraordinary reflections which may be interpreted by the safety function in a wrong way. So, in order to prevent malfunction of the safety circuit, we recommend that you wipe dust off the two pegs on a regular basis. Likewise, when cleaning the surfaces of the BeoSound 9000, remember also to clean the inner surface of the glass door.

Big Clamper or Small Clamper?

The question that is commonly asked when describing a BeoSound Ouverture or BeoSound 3000 is “Does it have a Large or Small Clamper?”

Most peoples reaction is “What on earth does that mean?” – so here is a quick guide to how to tell.

Basically, the clamper holds the CD in place – and in an effort to make it more stylish when in use, Bang & Olufsen decided to facelift the Ouverture and 3000 in 2001 by making the clamper larger, with a new Matt Grey finish as opposed to the previously used Milled Aluminium effect.

This almost completely obscured the CD when it was spinning, giving a very motionless and clean ‘feel’ to the unit. However, some people prefer the small clamper as they can see their CD playing. Its all down to personal choice, but obviously if you are looking to buy as new a model as possible – you ought to be looking for a large clapmer version.

We hope this clears the question up!