use a low voltage car type relay.

The sonos 12v activates the relay then making the contact for the 5v?? signal from a separate transformer for the power link?

When activated does the Sonos send out the 12v constantly?

With a couple of adapters from sounds heavenly this should be possible.

Hi,

Thanks for suggesting my cables.  Unfortunately with Beolab 5 it is not possible to activate the speakers via a voltage trigger - a coded Datalink signal is needed (either via the Powerlink socket or IR remote control) in order to wake the speakers before use.

The simplest option is to use a Beo4 remote to turn the speakers on.

Kind regards, Steve.

thanks StUrrock and Steve for your suggestions and comments. 

One other low-tech-high-tech solution I can think of is to bold this 

Steve, isn't it time to develop a cable that can do this activation?

Using a USB charger as power supply and a PIC chip...?

Hi Dante,

That is a good idea....but first I need to borrow a pair of Beolab 5s for testing - anyone have a spare set that I can borrow please? 😁

Kind regards, Steve.

Not sure this falls in the same category, but triggering upon play is one of my most desired features. I still have a BV5 and BV7. I’d love to bring them into AP2 multi-room via an APE. And then have it play audio-only without turning on the screen via some form of sensing? If there was a cable to achieve this, i’d be thrilled and would have a rather high willingness to pay.

Thanks,

That is good to know.  If there is enough interest, I will make a serious attempt to locate a pair of Beolab 5s with a view to designing an auto-trigger device.

Kind regards, Steve.

that would be awesome and you can already sign me up ;-) 

unfortunately I do not have a second pair of Beolab 5 standing around........... but if this needs to be tested I am happy to do so if that is helpful. 

I am interested in getting this auto-trigger cable as well!