Interesting.  Would this explain my problem of "hummers' on the line when no music playing" on my beolab 6000/Beolab 11from my computer in via Steve's cable (DIN to power link to power link 11 to beolab 6000 daisy chained).  I'd try Steves MK3 cables if so.

Thanks.

Dr.  Alex Luft

New Zealand

Hi Dr. Alex,

Sorry to hear that you are having problems.

The issue with pulses of noise when you change volume on a B&O system is different from having a non-B&O device (eg. computer) that generates noise when it is powered down.

First, please can you unplug the computer cable from the Beolab 11 and check that the DIN plug has 7 pins?  If not, then the cable isn't the correct one for Beolab 11.

If you have the 7 pin DIN cable in place, please can you check if the Beolab 11 hums when the computer is powered on?  If the sub only hums when the computer is powered off then the cable is OK - the usual cause of this issue is the computer allowing noise to be picked up and passed to the speakers.

If the Beolab 11 doesn't hum in any situation, but the Beolab 6000s hum - please let me know and we can look into this further for you.  Any questions, please ask.

Kind regards, Steve.

@ Alexander.

I would suggest getting an external DAC if you run from your PC.

Its a fairly inexpensive way of eliminating noise issues, especially if you go optical.

And,- all thing equal the sound quality should improve, assuming here you are using an analog output on your PC.

Hi,

I agree with BEOVOX141, even a basic external DAC like this one will give you a great improvement in sound over the computer's internal sound card:-

Hi Steve and thank you.  The cable is one of yours, and indeed has seven pins.  So its goes from my computer to the beolab 11.

The beolab11  when plugged in alone and powered does HUM (without power going off to the beoloab 6000's).

I can send a signal through an unpowered (battery) Bluetooth dongle and no hum.  If I plug the dongle in, hum is back.

Unplugging the computer (shutting it down) and leaving the beolab 11 powered results in no hum at all.

Please let me know if this is unclear.

Hi Alexander,

Thanks for your reply.  The 7 pin cable is correctly grounded and shielded for use with Beolab 11, so this won't generate any unwanted noise.  If you get noise when connected to the computer, but not when used with other music players (eg. iPod, phone, bluetooth dongle, etc) then the noise is being generated within the computer sound card.

Adding an external USB sound card like the one mentioned above should resolve this.

Kind regards, Steve.

Alexander wrote:

So its goes from my computer to the beolab 11

How exactly are you connecting a PL cable to your PC?

Hi,

The complication is that we have two different discussions on this thread!  Alexander is connecting a Beolab 11 to his pc with a minijack to DIN cable (not Powerlink as per the original discussion).

His noise is coming from the pc sound card from the description.

Kind regards, Steve.

Steve at Sounds Heavenly wrote:

Hi,

The complication is that we have two different discussions on this thread!  Alexander is connecting a Beolab 11 to his pc with a minijack to DIN cable (not Powerlink as per the original discussion).

His noise is coming from the pc sound card from the description.

Kind regards, Steve.

Aha,- but if the cable combo doesn't provide a GND connection on pin 7 you will always have an issue with ICE powered speakers. A custom MKIII cable with GND connected to pin 2/7 on the mini jack side might just do the trick, perhaps you already have that cable in your selection?

That being said: Get a DAC Alexander! Don't run an otherwise great speaker from an inferior source! 

Hi,

Yes, the cables that I supply do provide the correct grounding connection to pins 2 and 7 of the DIN plug to prevent noise from within the cable.  However, no cable can account for the poor performance of a PC sound card, hence the suggestions for an external USB DAC as per the link in the thread above.

Kind regards, Steve.