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Ok taking it to a deeper level of resarch now. I have tried to open up the BL3500 to try and acces the plug board, but it’s placed beneath several layers, and it seems that the wooferes also has to be removed and they are atteched with a combination of screws and double sided tape, so that has to be for another time.
However that display and IR reciever PCB in the front might give some insights.
The ribbon cable from the PCB contains several signals, so I decided to measure the with my multimeter when the unit was in standby and activated. After that I tried this again but this time with the 1611 converter connected to ML to se if anything was different.
I noticed different results for the connections PMUTE and +5VA St.BY.When the BL3500 was stand alone both would be at 5V in both standby and when activating the BL3500 with and audio command.
However when I connected the 1611 converter both would be 5V in stand by, but drop to 0V when activating with an audio command.
Looking at the Block diagram for system control in the service manual I can see that the PMUTE signals ends in the power amplifiers for left and right respectivly.
So this indicates that when the speaker is not connected to ML it will not unmute the power amplifiers , and therefor not let sound through to the speakers in stand alone mode.
I will try to do the same test with MCL connected one of the coming days to see if this give the same result.
I just aquired a working Beogram 2000 with some cosmetic issues, but none of the less working.
So I had to try it with the 1611 -MCL2AV combo
Setup:
BL3500 -ML – 1611 – datalink – MCL2AV – datalink – BG2000 (connected to CD input)
Control og the BG2000 was fully possible from the BL3500 with the use of CD command.
only issue was that I had to turn the volume to max as I still need a RIAA amplifier.
although it would be more simple if the beolink passive had an input.
And that lead my to another thought. Can the powerlink input in the Beolink passive be used while it is connected to Masterlink. So I made this setup:
1611 converter as Audiomaster – ML – Beolink passive – speaker cable -Passive speaker
And connected the PL output of an MCL2AV to the PL input on the BL passive.
MCL2AV in option 1.5 with iphone as input on the tape connector.
No response from the BL passive when activating the MCL2AV. Disconnecting ML from the PL passive and then it works, but the IR eye seems to be disable apart from the red LED.
@madskp. Any chance you could check whether the Active’s PL output will turn a connected Passive on/off? This could be useful if wanting a local ‘PC’ input in a room with passive speakers.Just did a test of this. Setup 1611 converter as Audiomaster – ML – Beolink Active – powerlink – Beolink Passive – speaker cable -Passive speaker
An adapter cable from the PC input of the BL active PC connector to a minijack conencted to my iphone as input. BL active in opt. 6.
Selecting PC on BEO4, and sound going through to the passive speaker.
Also tried with the inputs on the 1611 with the same result.
So yes this is a possible solution, although it would be more simple if the beolink passive had an input.
Great testing of the different IR sensors. It makes sense that they are compatible over the different versions as the remote signals has been the same over time.
Apropos Beolink Active I just got a good deal on three of the including IR sensors and some ML cable and not related adapter cables.
Interestingly on of them seems to be updated to SW 1.6 as the 6 is handwritten on it.
The IR sensors are in very nice cosmetic condition. For some reason one of them is wired up with an RJ45 cable. Have to figure out what pinout is used.
I noticed different results for the connections PMUTE and +5VA St.BY.
