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Problems regarding to Beolab 14 and avant 55

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laukl1115
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laukl1115 Posted: Tue, Jun 14 2016 3:56 PM

Currently i am a user of beolab 14 (5.1) and beovision avant 55.

Once i started using them, I was completely stunned by the great quality of these products.

After several months, there is completely no problems until I turned the sound module to 2.1 / 5.1 using Beolab14 .

At the very beginning, sometimes the right front loudspeaker of beolab14 is okay and perform equal volume as the left one. However, after some time, the volume of the right front loudspeaker would suddenly become very low afterwards, which I barely heard from that. Also, when I was turning up/down the volume with my remote, I could hear some 'zizi' sound from that loudspeaker, even I turned the sound mode from 2.1/5.1 back to using sound of TV only. The "zizi" sound only arised once I pressed the volume up/down button. 

Therefore, I tried to swap the connection of the right front  speaker with the left front one to the subwoofer. The above situation will happen to the left front loudspeaker and the right one become functional.

So can I deduce that the right front speaker slot of the subwoofer is not functional?

The B&O technician has come and taken the subwoofer away, and tried to fix it for two times. It may be functional for several hours but the above situation will come back after that. 

Does anyone have any ideas about that? Thank you.

 

 

Michael
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Michael replied on Wed, Jun 15 2016 9:21 AM
laukl1115:

Currently i am a user of beolab 14 (5.1) and beovision avant 55.

Once i started using them, I was completely stunned by the great quality of these products.

After several months, there is completely no problems until I turned the sound module to 2.1 / 5.1 using Beolab14 .

At the very beginning, sometimes the right front loudspeaker of beolab14 is okay and perform equal volume as the left one. However, after some time, the volume of the right front loudspeaker would suddenly become very low afterwards, which I barely heard from that. Also, when I was turning up/down the volume with my remote, I could hear some 'zizi' sound from that loudspeaker, even I turned the sound mode from 2.1/5.1 back to using sound of TV only. The "zizi" sound only arised once I pressed the volume up/down button.

Therefore, I tried to swap the connection of the right front speaker with the left front one to the subwoofer. The above situation will happen to the left front loudspeaker and the right one become functional.

So can I deduce that the right front speaker slot of the subwoofer is not functional?

The B&O technician has come and taken the subwoofer away, and tried to fix it for two times. It may be functional for several hours but the above situation will come back after that.

Does anyone have any ideas about that? Thank you.

Sounds strange. I have heard the zizi-noice in my setup when I tried cables that was already installed in the wall, then I got that noise when I turned up/down the volume.

It might be a cable issue or an electronic issue. The sound is probably a voltage change in the PL cable to adjust the amplification.

I don't understand what you mean 5.1/2.1 on the Bl14. Did you change using a switch on the subwoofer? You should probably refrain from doing so especially when connected to power and beovision.

You could instead set up different speaker groups in your Avant, one with 2.1 and one for 5.1 for example.

I think you should try another PL output from your tv, check your cables and if everything is still the same the subwoofer probably has damage to electronics. Try another subwoofer and if the problem disappears then, yours will require service.

Beolab 50, Beolab 8000 x 2, Beolab 4000 x 2, 
BeoSound Core, BeoSound 9000, BeoSound Century, 
BeoLit 15, BeoPlay A1, BeoPlay P2, BeoPlay H9 3rd Gen, BeoPlay H6, EarSet 3i, 
BeoVision Eclipse Gen 2 55", BeoPlay V1-40, 
BeoCom 6000 and so much else :)  

laukl1115
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laukl1115 replied on Wed, Jun 15 2016 3:19 PM

Sorry for my bad expression. Yes. What i actually mean is that i switch to different speaker groups in my avant, to 2.1 and 5.1. I just realise that even when i use the speaker group involving tv speaker only, i can hear some zizi sound from the right front loudspeaker when i am turning up/down the volume. I have to stand below the speaker to hear the zizi sound as it is almost barely heard if i sit about 2m apart from that. 

The cables connecting the subwoofer and speakers are inside the wall. I tried to switch the connection of right front speaker and the left front one to the subwoofer, the left one will become unfunctional, that the sound has very very low volume and zizi sound heard when i am turning up/down the volume.  So  the cable connecting the subwoofer and the speaker is functional, i guess?

Michael
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Michael replied on Thu, Jun 16 2016 11:55 AM

Ah I see. I haven't heard that sound from my tv but I will listen when I have time. Sounds weird though. Perhaps something is wrong with your tv. Have you tried changing to another PL-port on the TV? 

I think the subwoofer with its built in amps is the problem though.  

Beolab 50, Beolab 8000 x 2, Beolab 4000 x 2, 
BeoSound Core, BeoSound 9000, BeoSound Century, 
BeoLit 15, BeoPlay A1, BeoPlay P2, BeoPlay H9 3rd Gen, BeoPlay H6, EarSet 3i, 
BeoVision Eclipse Gen 2 55", BeoPlay V1-40, 
BeoCom 6000 and so much else :)  

t034780
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t034780 replied on Fri, Aug 25 2017 5:55 PM

Hi I have a similar problem.

Here's my setup:

 

  • Avant 55
  • Beolab 11 subwoofer
  • Beolab 12-2 front speakers
  • Beolab 6000 rear speakers (detail the speaker cabels are linked so both speakers come together in one PL connection)  
  • Beolab 4 ceiling speakers  

 

Sometimes when I select a speakerrole with the beolab 6000 involved they make a soft siss and as a consequence no musical output. At one point I even thought the Beolab 6000 broke down so I replaced them with a second hand pair. However after a while the same issue started again. What makes this even worse is that I can't reproduce it. It just happens sometimes.

I tried all the following:

  • I tried replacing the PL port for the beolab 6000 on the Avant
  • I rescanned the soundconnections
  • I completely shutdown the power for speakers and tv

This is the workaround I use with the highest success rate:

I made a music role with only the rear speakers and when it happens I select this role. I increase the volume real high (in the beginning this was around 70 but it seems as this barrier increases overtime so now's it's the maximum). Then after a while it comes alive, you can imagine that this is not very pleasant way for me (and neighbours). 

None seems to be the structural solution, please help ...Hmm 

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