Sign in   |  Join   |  Help

BeoLab 4: which pin connections on the PowerLink input?

rated by 0 users
Answered (Verified) This post has 1 verified answer | 2 Replies | 1 Follower

KolfMAKER
Top 500 Contributor
The Netherlands
164 Posts
OFFLINE
Silver Member
KolfMAKER posted on Tue, Sep 28 2021 10:21 AM

I have a set of BeoLab 4 speakers that I want to connect to a non-B&O amplifier. It is a small amplifier with a mini-jack as audio/line-out.
Also I want to use the auto standby functionality, to have the BeoLab 4 switch to standby when music playing ends. I understood, that to use this functionality, the audio input signal should go through the PowerLink input on the BeoLab 4, not the mini-jack input. I read that connecting via the mini-jack input keeps the BeoLab 4 on at all times, which I have also tested. So this is not what I want.

If this is correct, I need a mini-jack to PL/DIN cable to connect (from amp to BeoLab 4).
To my understanding I need following pins on the DIN (referring to the picture below, pins seen from the solder-side):

  • 2 = GND
  • 3 = Left channel in
  • 5 = Right channel in
  • 4 = Switching voltage for speaker on - so I believe I should connect this to pin 3 or 5.

Unfortunately, the speaker does not switch on when connected as described above.
So my question: what do I need to change to make it work? 

 

Additional:
- My BeoLab 4 is a type 6650.
- I believe the PowerLink on the BeoLab 4 is a PowerLink MK III. 
- I want to make this cable myself, also to understand the connections. 

======


Answered (Verified) Verified Answer

Guy
Top 50 Contributor
Buckinghamshire
2,448 Posts
OFFLINE
Gold Member
Answered (Verified) Guy replied on Tue, Sep 28 2021 10:38 AM
Verified by KolfMAKER

Firstly the Beolab 4 does have an auto-switch-on function, but this operates via the 3.5mm 'line-in' input, but only when the LINE/PC switch is set to LINE.  (If the switch is set to PC, the speakers will stay on all the time).

However, if you experiment with the above (as I did) you will find that the speaker switches on/off at inappropriate times, such as in a small pause between music tracks.  I found this very annoying in my set up.

The Powerlink input has a different 'switch on' function.  This does not 'detect' the music signal, but relies upon a separate 5v signal being applied to PIN 4 to turn the speakers on.  You won't get this by taking a signal from pin 3 or 5, but should supply if separately.  If you have a look at some of the diagrams in PeterPans's thread below you will see novel ways to apply the 5v to Pin 4 (together with useful confirmation of the correct powerlink pins).

http://www.hifi4all.dk/forum/forum_posts.asp?TID=32157&PN=1

 

All Replies

Guy
Top 50 Contributor
Buckinghamshire
2,448 Posts
OFFLINE
Gold Member
Answered (Verified) Guy replied on Tue, Sep 28 2021 10:38 AM
Verified by KolfMAKER

Firstly the Beolab 4 does have an auto-switch-on function, but this operates via the 3.5mm 'line-in' input, but only when the LINE/PC switch is set to LINE.  (If the switch is set to PC, the speakers will stay on all the time).

However, if you experiment with the above (as I did) you will find that the speaker switches on/off at inappropriate times, such as in a small pause between music tracks.  I found this very annoying in my set up.

The Powerlink input has a different 'switch on' function.  This does not 'detect' the music signal, but relies upon a separate 5v signal being applied to PIN 4 to turn the speakers on.  You won't get this by taking a signal from pin 3 or 5, but should supply if separately.  If you have a look at some of the diagrams in PeterPans's thread below you will see novel ways to apply the 5v to Pin 4 (together with useful confirmation of the correct powerlink pins).

http://www.hifi4all.dk/forum/forum_posts.asp?TID=32157&PN=1

 

KolfMAKER
Top 500 Contributor
The Netherlands
164 Posts
OFFLINE
Silver Member

Thnx Guy for your swift response and suggestions.

Connecting via the PowerLink, with 5 volt applied to pin 4 is not possible in this project.
Nevertheless I tried the mini-jack connection, and had another look at the input selector switch. I changed it and tested if the BeoLab 4 would switch to standby when the music ends. And it did!

So, solution found, many thanks! 

Page 1 of 1 (3 items) | RSS
Beoworld Security Certificate

SSL