Name: Bang & Olufsen BeoLab 90
Brand: Bang & Olufsen
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BeoLab 90

Technical Sound Guide

Bang & Olufsen A/S

April 3, 2018

Please note that text in grey indicates features that are not yet released

(SW Version 2.3.x)

This manual is for information purposes only and is not legally binding.

Default Chapter2
- Table of Contents2
1 Introduction7
- Features7
2 Application Information11
- Menu Navigation11
- Menu Map12
3 Quick Setup Guide13
4 Presets14
- What Is a Preset14
- Preset Management14
5 Control Parameters15
- Beam Width Control15
- Beam Direction Control18
- Speaker Distance19
  - Adjusting Speaker Distances with a Rotated Beam Direction19
  - Adjusting Speaker Distances for more than One Listening Position19
    - Automated Measurement of Speaker Distance19
- Speaker Level20
- Speaker Role20
- Active Room Compensation20
- Volume21
- Mute21
- Tone Controls22
- Automating Preset Selection26
6 Inputs28
- Inputs Selection28
  - Automatic Selection28
    - Selection Priority28
  - Manual Selection28
- Individual Input Parameters28
- Connection Panels30
7 System32
- About32
- Max Volume32
- Startup Volume32
8 Tables33
- Loudspeaker Sensitivity33
- Volume Control33
- Parametric Equaliser33
9 Features35
- Resonance-Based Sound Design35
- Phase-Optimised Filtering35
- Automatic Bass Linearisation (ABL) and Thermal Protection35
  - Thermal Compression Compensation36
  - Production "Cloning36
10 Technical Speciﬁcations37
- Total System37
- Preampliﬁer and Processor Section37
- Power Ampliﬁers40
  - Tweeters and Midrange Sections40
  - Woofer Section40
- Loudspeaker Drivers40
- Power Supply41
- Digital Power Link41
11 Faq42
- Multichannel System Setup42
  - Bang & Olufsen Television as Source42
  - Third-Party Device as Source42
- Does Beolab 90 Support DSD42
- Does Beolab 90 Support DXD42
- Why Does the Beolab 90 Sound "DI Erent" When I Switch to Watching Television42
- Setup "Tips and Tricks43
12 Setup “Tips and Tricks”44
13 Troubleshooting44
- Some Features in the Beolab 90 Controls Are Disabled44
- Lip Sync Problems44
- Echo Problems44
  - Multiroom Audio Systems44
  - Surround Processors44
- Loudspeakers Don't Turn on Automatically44
- Loudspeakers Never Shut O44
- Analogue Sources44
- Digital Sources44
- USB Audio Not Working45
- S/PDIF Input Not Working45
- Optical Input Not Working45
- Automatic Switching of Inputs Not Behaving as Expected45
14 Appendix 1: Recommendations for Critical Listening46
- Loudspeaker Conﬁguration46
- Listening Room Acoustics47
- Loudspeakers47
- Source Devices47
- Cable Recommendations48
- AC Mains Cables48
15 Appendix 2: Introduction to Parametric Equalisers49
- Filter Type49
- Gain50
- Centre Frequency50
16 Appendix 3: the Inﬂuence of Listening Room Acoustics on Loudspeakers52
- Early Reﬂections52
- Room Modes54
- Reverberation55
- Solutions55
- Conclusions55
17 Appendix 4: Loudspeaker Directivity and Distance Perception in Stereo Imaging57
- Distance Perception in Real Life57
- Distance Perception in a Stereo Recording57
- Combining the Two57
18 Appendix 5: Microphone Placement Strategy When Creating ARC Zones58
- General Information58
- Background Noise58
- Microphone Orientation and Holder58
- Height58
  - Doors and Windows58
- One Listening Position58
- More than One Listening Position59
19 Appendix 6: ABL - Adaptive Bass Linearisation60
- A General Introduction to ABL60
- ABL and Beolab 9061
20 Appendix 7: Thermal Compression Compensation62
- Introduction62
- Voice Coil Temperature62
- Loudspeaker Response Changes63
- The Solution63
- Some Extra Information64
21 Appendix 8: Control of Beolab 90 Using the Beoremote 165
- Introduction65
  - Customising the Product Name65
- Input Selection65
  - Source Selection65
  - Customising the Input Names65
Index66

Brand	Bang & Olufsen
Model	BeoLab 90
Category	Speakers
Language	English

Bang & Olufsen BeoLab 90 Technical Sound Guide

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