Maybe this solutions will bring some anwers: http://www.beomac.com/toepassing/ander-merk-tv-aansluiten-en-geluid-via-b-o-speaker/

@Playlink: Your link brings me to some Almando products. This isn't what I need. My dad bought a Marantz SR5010 receiver and we wan't to connect the described beolab speakers to it, using the correct converter-cables.

@kallasr: Yes! I found your thread yesterday and showed it to my dad. Your setup is almost the same as what I want for my dad.
The only difference is the way you connect your center speaker:

You connected two Beolab 4000's and I guess you looped the second 4000 with a powerlink cable to the first 4000, so they work as 'one' center speaker.

My main question is about how I should connect the Beolab 7.2 so it uses both internal amps to play the same center channel.

Will my described solution work (with the 1xmale rca to 2xfemale rca splitter cable, together with a triggering cable, showed in my pictures)?

And what about the Beolab 3's, will they be 'humm-free' if I use the audio+trigger cables from link

@Steve:

Thank you for you detailed answer.
I know that powmasscables is one of your 'competitors' and I understand that you can't judge their cables/designs, but the only real difference is that they use a 12v (with internal stepdown to 5v) triggering on pin 4 and u use a 220v to 5vdc adapter to pin4.
Theoretical: If I would cut the 220v adapter on your triggering-kit (I have one, because I used it in a former setup in my own house), and solder a 3.5mm jackphone with a 12v>5v stepdown to it, your cable will be the 'same' as the powmasscables/av-connection designed cables. Am I correct?

What would be the downside? Triggering is triggering... Original B&O equipment also sends 5v to pin 4 to turn beolab speakers on, nothing fancy....? 

Any forummembers who use the powmasscable design triggering cables? Do they 100% work? No humm, etc.?

And Steve, 'if' I decide to buy you triggering kit (I have one, and need at leas one extra, so I can connect both beolab 3's and the beolab 7.2), instead of the 12v kits from your competitors (because you are telling me that this is the more 'safe' route), would a MASTER/SLAVE-socket be a solution to trigger your 220v to 5v adapters automatically when I switch on the AV-receiver?
So something like this:

And apart from the 220v vs 12v triggering cables, what do u suggest to make the beolab 7.2 a dedicated center speaker? How to connect it to a rca pre-out (on a av-receiver), so both internal amps (left and right channel) in the beolab 7.2 are used for the same mono center channel? Should I use a simple 1xmale rca to 2xfemale rca splitter cable for this? 

Hi Tim,

I think in this case, the safe option is to use the "Master/Slave" remote control mains power sockets that you suggested.

I apologise if my first post was a bit long-winded.  To summarise this:-

1) Triggering Beolab speakers directly from a receiver may damage the receiver

2) Each receiver model is different, so even if this works with one receiver, it may not be safe with your receiver.

3) Using a separate mains supply to trigger the speakers avoids the risk of receiver problems.

Hope this helps.

Kind regards, Steve.

Thanks Steve.
I will test the new ordered Marantz SR5010 receiver with the triggering kit I already have (from soundsheavenly), together with a master/slave-socket.
If it works, I will order a second triggering kit from you, so I can connect both the BL3's and the BL7.2

On the other hand, Why does your 'competitor' sell dozens of 12v triggering cables if it 'could'  damage the receiver...
Are there any forummembers who use the mentioned cables and can give their opinion? 

Can you also answer my other asked question? ->

And apart from the 220v vs 12v triggering cables, what do u suggest to make the beolab 7.2 a dedicated center speaker? How to connect it to a rca pre-out (on a av-receiver), so both internal amps (left and right channel) in the beolab 7.2 are used for the same mono center channel? Should I use a simple 1xmale rca to 2xfemale rca splitter cable for this?  

Hi Tim,

Sorry I missed your other question 👍

You can either use the Beolab 7-2 as a mono speaker in the receiver centre channel output (via the RCA splitter to feed mono sound to both channels), or you can connect this to the Front Left/Front Right channels of the receiver instead to play in stereo.  In this case, please set "Center = Off" in the receiver menu and move your mains stereo speakers from the Front Left/Front Right channels to the Surround Left/Surround Right channels instead.

Kind regards, Steve.

Hi,

In regards to triggering I use one of Powmas trigger RCA to PL on my set up which works fantastic, flick on system all speakers trigger on and stay on. Once down hit standby and immediately the speakers go to standby. I too also considered that Almando box as well but since I have a tigger socket, it's not required in my case.

At least with my set up I have zero issues like grounding noise or cross talk and yes I have a non b&o TV (LG oled) and pre amp / DAC (Rotel).

For me everything I use is via an apple TV so chain is follows:

Apple TV toslink > Rotel tosink in > Rotel pre out RCA + 12v trigger > Powmas RCA to PL > Beolab 2 PL, Beolab 2 PL x2 > Beolab 8000 PL.

As an added bonus I can Airplay lossless or mp3 audio from my iMac or phone to the apple tv without even having to switch on the tele.

Your Marantz appears to have a 12v trigger so I'm pretty sure that Powmas trigger cable will work. Ask Mr. Ligthart from them to be sure.

@davidr: thanks for your reaction.

Good to hear the powmass cables work 100% on your setup. I will let my dad decide which cables he wants to buy. I prefer the powmass cables, because of the auto triggering, but the soundsheavenly cables could also work when I add the described master-slave socket to do the 220v triggering...

I will let you know which triggering cables we are going to order next week and how they will sound and work in combination with the Marantz sr5010 receiver. First we are going to install his new delivered 65ks8000 quantum dot screen. What a beauty!!!