Beosound Core / Beolab 18 stereo image problem

15 replies
L(
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LuffeDK (archived2)
Bronze
Posted October 24, 2021 at 12:54 GMT
#2159948

Hi all,

I have an issue with the stereo image in the above mentioned setup and I am trying to figure out if it is a problem with my core or my Beolab 18’s.

My Beolab 18’s are connected to the Core via Powerlink shielded Cat7 cable (from B&O)

I have checked that my Beolab 18’s are configured correctly left and right respectively, by setting the switch on the Beolab 18 in the L&R position.

I have chosen some tracks where some vocal’s or similar are panned all the way to the right channel and I cannot hear them on my BL18. The speakers are playing, so something tells me that both the right and left speaker are playing the left channel.

I have chosen same tracks from Deezer on my Beolab 50 connected to Harmony, and the stereo image is perfect. The same goes for my Beosound 35, etc. etc.

In order to eliminate a cable problem, I have connected the Beolab 18’s to the core with new cables and it did not help.

I have also switched the L&R position on the BL18 speakers. Herby, the left speaker should play the right channel and visa versa. I still cannot hear the right channel in any of the speakers, so something tells me it is a problem with the core.

I have also made a factory reset on both the Core and the BL18 and it did not help.

The obvious thing to check is to connect my core to my BL50’s but that is difficult as everything is build into a fixed installation.

Are other facing same issue with their core or BL18?

L(
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LuffeDK (archived2)
Bronze
Posted October 24, 2021 at 13:15 GMT
#2159949

The speakers are normally connected to core via an original B&O powerlink splitter. 

I have already checked if the splitter caused the issues. I connect the Left Speaker to the Core directly and then I connected the Right speaker to the Left Speaker with a powerlink cable. I used new cables to elimate a cable issue

M(
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Mikipedia (archived2)
Bronze
Posted October 24, 2021 at 14:27 GMT
#2159950
One thing you could check is if the cat cables have the same colour coded termination one both ends.
L(
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LuffeDK (archived2)
Bronze
Posted October 24, 2021 at 14:37 GMT
#2159951

Mikipidia wrote:
One thing you could check is if the cat cables have the same colour coded termination one both ends.

I’m not sure I understand. I guess there is only one way to assemble the cables and the RJ45.

This was made by an electrician and all cat7 cables were tested.

I have switched cables and I had same result. 

 

L(
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LuffeDK (archived2)
Bronze
Posted October 24, 2021 at 14:41 GMT
#2159952

LuffeDK wrote:

Mikipidia wrote:
One thing you could check is if the cat cables have the same colour coded termination one both ends.

I’m not sure I understand. I guess there is only one way to assemble the cables and the RJ45.

This was made by an electrician and all cat7 cables were tested.

I have switched cables and I had same result. 

 

If I am not mistaken, a power link cable is wired same way as a Lan cable used in network’s. Is that a misunderstanding?

Anyway, the installer wired and tested all cables. 

carolpa
Offline
carolpa
Bronze
Posted October 24, 2021 at 14:53 GMT
#2159953

Which source did you play? Did you try another?

L(
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LuffeDK (archived2)
Bronze
Posted October 24, 2021 at 14:56 GMT
#2159954

Carolpa wrote:

Which source did you play? Did you try another?

I have only tried with the same Deezer tracks on the BL18 and BL50. 
Everything worked fine on the BL50’s.

 

LA
Offline
lawrencejmcook
BronzeFounder
Posted October 24, 2021 at 15:42 GMT
#2159955
One of my Essence boxes had a RJ45 Powerlink socket with a loose connection to the right channel. My solution was to try a different brand of Powerlink/Ethernet cable, as the RJ45 plugs can vary minutely in size. A slightly bigger RJ45 plug successfully made contact across all pins.

I suppose that if you were minded to try it, you might disconnect all cables from the Core and using a wooden toothpick try to gently tease the prongs in the RJ45 Powerlink socket downward very slightly, to improve the physical connection. It might even be obvious to the eye which pin is not properly making contact.

Good luck.
L(
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LuffeDK (archived2)
Bronze
Posted October 24, 2021 at 17:02 GMT
#2159956

lawrencejmcook wrote:
One of my Essence boxes had a RJ45 Powerlink socket with a loose connection to the right channel. My solution was to try a different brand of Powerlink/Ethernet cable, as the RJ45 plugs can vary minutely in size. A slightly bigger RJ45 plug successfully made contact across all pins.

 

 

I suppose that if you were minded to try it, you might disconnect all cables from the Core and using a wooden toothpick try to gently tease the prongs in the RJ45 Powerlink socket downward very slightly, to improve the physical connection. It might even be obvious to the eye which pin is not properly making contact.

 

 

Good luck.

Thank you for the suggestion. I have tried it w/o any luck.

I have again tried to switch the speaker switches so my left speaker is set to right and right speaker is set to left. 
I do not here the “right” channel which tells me something is wrong in the core.

L(
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LuffeDK (archived2)
Bronze
Posted October 24, 2021 at 17:29 GMT
#2159957

I have now tried to AirPlay to the core and I have the same result. 
Both BL18 are playing the left channel only. Changing the dip L/R dip switches on the speakers does not change anything. They continue to play left channel only  

If someone has time please airplay this to your core and let me know if you hear the right channel.

 

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