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Beolab 50 and Beosound Core

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wanc1
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wanc1 posted on Mon, Oct 26 2020 2:35 PM

Hi all,

 

I have my Beolab 50s connected to Beosound Core.

However, when the music is not playing, I could hear a noticeable hiss coming from the tweeters.

When I’m using USB audio connected to my Mac, there’s no hiss.

Is this supposed to happen?

thanks

Ray

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Michael
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wanc1:

Hi all,

I have my Beolab 50s connected to Beosound Core.

However, when the music is not playing, I could hear a noticeable hiss coming from the tweeters.

When I’m using USB audio connected to my Mac, there’s no hiss.

Is this supposed to happen?

thanks

Ray

How is it connected?

Beolab 50, Beolab 20, Beolab 8000 x 2, Beolab 4000 x 2, 
BeoSound Core, BeoSound 9000, BeoSound Century, 
BeoLit 15, BeoPlay A1, BeoPlay P2, BeoPlay H9i, BeoPlay H6, EarSet 3i, 
BeoVision Avant 55, BeoPlay V1-40, 
BeoCom 6000 and so much else :)  

wanc1
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wanc1 replied on Mon, Oct 26 2020 2:50 PM

Via Powerlink 

Razlaw
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Razlaw replied on Mon, Oct 26 2020 2:56 PM
My 50s are connected to a Core by optical. I have not noticed any such sound.

Beolab 50s Beolab 9s Beolab 12-3s Beolab 1s Beolab 6000s 2 pairs Beolab 4000s Beovision 7-55 Beovision 10-40 Beoplay V1 32 inch Beovision Avant 32 inch Beosound 1 (CD player) Beosound 3000 Beosound 5 Core Essence MKII Beoplay M5

Michael
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wanc1:

Via Powerlink 

The Core shall be connected by optical to Beolab 50 for optimal sound. It can be connected via Powerlink but will then suffer from lower processing quality from the speakers internal DAC. This is a design choice (although stupid, as it can not be regulated).

I would suggest you connect it over optical instead. It is possible that the sound you hear are a result of using an unshielded or badly shielded cable of low quality between the devices. You need a S/FTP Cat6 or 7 cable for optimal signal transfer without balancing or interference issues.  

Beolab 50, Beolab 20, Beolab 8000 x 2, Beolab 4000 x 2, 
BeoSound Core, BeoSound 9000, BeoSound Century, 
BeoLit 15, BeoPlay A1, BeoPlay P2, BeoPlay H9i, BeoPlay H6, EarSet 3i, 
BeoVision Avant 55, BeoPlay V1-40, 
BeoCom 6000 and so much else :)  

Millemissen
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Well - all ‘ways into’ the 50’s are basicly treated the same way in the processing of the speaker/s with the exception that the analog connection runs through an ADC-converter.

When you connect a source analog you will have a slightly higher noice floor, that you can measure, but hardly hear.

I’d suppose that the (quality of) the used PL cable primarily is the reason for the ‘noticable hiss’.


MM

There is a tv - and there is a BV.

AnalogPlanet
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Wouldn't it be fantastic that when you buy a pair of a 25.000EUR speakers, you get as well specifically instructed how to achieve the best sound quality? So that you don't have to reach out to this forum? Or is that too much to expect? (this is not the first thread with the same subject, right?)

wanc1
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wanc1 replied on Mon, Oct 26 2020 10:58 PM

Probably. Kinda disappointing though since the cables are installed by my dealers and are I guess “official” B&O ones. Will check out some optical cables.

wanc1
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wanc1 replied on Mon, Oct 26 2020 11:02 PM

True. In my country, it’s around 35000 euros... RIP

Michael
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Michael replied on Mon, Oct 26 2020 11:07 PM
Well there is the technical sound guide. And yes, it’s weird the install manual isn’t given out. It contains important messages to ones health and safety so I felt a bit mislead by B&O as they kept that information from me and hence made it much more risky to install. In the end I got a copy through friends but it was not easy and it’s just an old draft for service personnel.

I hope B&O reads this and change their mind.

Beolab 50, Beolab 20, Beolab 8000 x 2, Beolab 4000 x 2, 
BeoSound Core, BeoSound 9000, BeoSound Century, 
BeoLit 15, BeoPlay A1, BeoPlay P2, BeoPlay H9i, BeoPlay H6, EarSet 3i, 
BeoVision Avant 55, BeoPlay V1-40, 
BeoCom 6000 and so much else :)  

Mikipidia
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Risky to install? Also the sound guide is freely available

New: Beovision Harmony, Beolab 50's, Beolab 18's, Beolab 17's, Beolab 3's, Beosound 9000 mk3, Beosound Stage & LG, Beosound 2, Beoplay M3, Beoplay A1, Beoplay H4 gen 2, Beoplay E8 3.0

Mikipedia on YouTube (finally Stick out tongue )

https://www.youtube.com/c/Mikipedia

Old: Beovision Eclipse, Beolab 1's, Beolab 2, Beovision 10-46, Overture 2300, beolab 8000's, Beolab 4000's, Beovision avant 32" etc. etc.

Michael
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Mikipidia:

Risky to install? Also the sound guide is freely available

New: Beovision Harmony, Beolab 50's, Beolab 18's, Beolab 17's, Beolab 3's, Beosound 9000 mk3, Beosound Stage & LG, Beosound 2, Beoplay M3, Beoplay A1, Beoplay H4 gen 2, Beoplay E8 3.0

Mikipedia on YouTube (finally )

https://www.youtube.com/c/Mikipedia

Old: Beovision Eclipse, Beolab 1's, Beolab 2, Beovision 10-46, Overture 2300, beolab 8000's, Beolab 4000's, Beovision avant 32" etc. etc.

Risky to install yes, as the instructions contains important information about how to lift them and how many people are required for safe work. It also contains information about how cables has to be installed to not cause fire hazards.

And yes, the technical sound guide is available just as I wrote too :).

Beolab 50, Beolab 20, Beolab 8000 x 2, Beolab 4000 x 2, 
BeoSound Core, BeoSound 9000, BeoSound Century, 
BeoLit 15, BeoPlay A1, BeoPlay P2, BeoPlay H9i, BeoPlay H6, EarSet 3i, 
BeoVision Avant 55, BeoPlay V1-40, 
BeoCom 6000 and so much else :)  

L1NO
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L1NO replied on Tue, Oct 27 2020 12:01 PM

All Beolab speakers hiss.

Michael
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Michael replied on Tue, Oct 27 2020 12:03 PM
L1NO:

All Beolab speakers hiss.

Yea slightly due to the active speaker solution but as the thread starter also wrote, they don’t sound as bad on other inputs so i believe that he is using an in sufficiently shielded cable for the power link input.

Beolab 50, Beolab 20, Beolab 8000 x 2, Beolab 4000 x 2, 
BeoSound Core, BeoSound 9000, BeoSound Century, 
BeoLit 15, BeoPlay A1, BeoPlay P2, BeoPlay H9i, BeoPlay H6, EarSet 3i, 
BeoVision Avant 55, BeoPlay V1-40, 
BeoCom 6000 and so much else :)  

Jaffrey2230
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Correct. The noise floor is lower with optical in and out from BS Core based on my experience as well. It’s highest with volume control audio out from a TV.

My B&O Home: 

 

  • Beolab 8002 + Beolab 2 + Beosound Core with Essence Remote (Office)
  • Beolab 6000 + Beolab 11 + Beosound Core with Essence Remote (Bedroom)
  • Beoplay A9 Mk2 (Living Room)
  • Beosound 1 with wireless dock (Portable)
  • Beosound Balance (Dining)
  • Beoplay H95 (Focused listening, travel)
  • Beoplay H9 (3rd gen) (retired)
  • Beoplay P6 (Portable)
  • Beotime wall clock (hallway entrance)
  • Beoremote X (poor man's Halo Big Smile)

 

 

 

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