BeoLab 2: how to switch on without 5 volt trigger?

carolpa

Posted August 21, 2022 at 16:51 GMT ? Edited August 21, 2022 at 16:51 GMT

KolfMAKER

Bronze

569 posts

Posted August 21, 2022 at 17:29 GMT

#693626

Thnx very much Guy & Carolpa! The Playmaker, BeoSound Core or Essence are unfortunately no options for this project. I am looking at a way to integrate the streaming completely inside the speaker casing. So no PowerLink cables, only a power cable and no boxes outside the speaker casing. So I wonder if the 5v triger is something I can create somehow inside the BeoLab 2.
Location: The Netherlands
My B&O Icons:

Beoremote-Beo4.png
Beovox.png
Beosound.png
Beosound-9000.png
Beolab-18.png
SI

Sia43

Bronze

119 posts

Posted August 21, 2022 at 17:53 GMT

#693627

This youtube video (https://www.youtube.com/watch?v=ivTnjK5mLV0) shows a product that seems similar to what you are planning to do. It might be small enough to be built inside the Beolab 2 (just guessing). It seems like the trigger is going on as soon as a line signal is received and turns itself off after 6 minutes with no signal. I wanted to buy two of these for my Beolab 2000s, but unfortunately, the provided eBay link doesn't seem to work. In case you find the product, please let e know.

matador

BronzeModerator

2424 posts

Posted August 21, 2022 at 20:25 GMT

#693629

Location: Paris France

KolfMAKER

Bronze

569 posts

Posted August 22, 2022 at 11:19 GMT

#693636

@Matador Very interesting approach! This is obviously the way B&O equipment handles it. I would be very much interested in a electronics scheme, and make such to try it out. Any chance you know how such would look like?
Location: The Netherlands
My B&O Icons:

Beoremote-Beo4.png
Beovox.png
Beosound.png
Beosound-9000.png
Beolab-18.png

matador

BronzeModerator

2424 posts

Posted August 22, 2022 at 12:24 GMT

#693640

It would look like a little box with line-in and line-out sockets and a 5V input (or whatever is need to start the Beolab AND power the box circuitry. Inside there will be a relay or something similar that would be triggered by the amplified Line-in signal (sound). The relay would have an auto hold loop with some sort of timing circuitry (I.E it would stick for "some" time when no sound is present and then open). Output of the relay will trigger or not the 5V to the Beolab. Now, Please note that I'm totally ignorant of how it could impact sound (since we're playing with the main audio feed, but as far as I remember my electronic classes, this is not NASA technology here.
Location: Paris France

Guy

GoldModerator

4508 posts

Posted August 22, 2022 at 13:11 GMT

#693641

Maybe something like this (the 5V trigger version) would be suitable:
Location: Warwickshire, UK
My B&O Icons:

BeoCenter-9500.png
Beoremote-Beo4.png
Beovision-10.png
Beotime.png
Beosound.png
Beosound-Explore.png
Beosound-Essence.png
Beoplay-P2.png
Beoplay-M3.png
Beoplay-H4.png
Beoplay-H3.png
Beoplay-Form-2i.png
Beoplay-Earset.png
Beoplay-A2.png

tuttivini

Bronze

229 posts

Posted August 23, 2022 at 21:08 GMT

#693689

Why don't you use a 'beolab trigger cable for this? Soundsheavenly makes them. powmasscables makes them. Or make it yourself. Put 2.5~5v on pin 4 and pin 7 for ground and all beolab speakers switch on...

Please Log In to Reply

You must be logged in as a BeoWorld member to post replies to forum threads.

or

Join BeoWorld

Register to access the forums, reference material, and exclusive member benefits — including our monthly prize draw.
Become a Member
December 2026 Prize Draw
Gold Members Only
As a Gold member you're automatically entered into our exclusive prize draw — your chance to win iconic Bang & Olufsen products. A unique benefit of BeoWorld Gold membership, every draw brings a new opportunity to win something special.

View Prize Go For Gold

1st Prize

2nd Prize

3rd Prize