When I have all components of my garage sound system I will also try it out and report!
Many thanks so far! J.
Many thanks so far! J.
Location: Netherlands
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ml powerbox alternative
32 replies
A little update from at testing session today.
I tried to connect the BLC to a BL3500 MK1 with a ML cable, and also connected the network link to my network.
On the BL3500 when I press Menu, 0, 2, GO it says No ML, so not registering it.
The voltages are also different when connected:
The pink Power + is now +4,68V
The Blue power - is now - 4,68V
Data + and Data - both are reading +0.4V which mean that at least the Data - can not pull the voltage to the correct level (-0.25V).
Also when I disconnect again and measure the data voltages they are both positive, and arround 0,3V. They might also both have been positive when I measured yesterday, so it could be that the missing negative data voltage is what the power box does?
I tried to connect the BLC to a BL3500 MK1 with a ML cable, and also connected the network link to my network.
On the BL3500 when I press Menu, 0, 2, GO it says No ML, so not registering it.
The voltages are also different when connected:
The pink Power + is now +4,68V
The Blue power - is now - 4,68V
Data + and Data - both are reading +0.4V which mean that at least the Data - can not pull the voltage to the correct level (-0.25V).
Also when I disconnect again and measure the data voltages they are both positive, and arround 0,3V. They might also both have been positive when I measured yesterday, so it could be that the missing negative data voltage is what the power box does?
Location: Denmark
I have now tried to a 1611 converter to the setup, so both the BLC NL/ML, BLC 1611 and BL3500.
Now the BL3500 says ML OK
The voltage on the Pink wire power + is 10.9V
The voltage on the blue vire power - is -10.9V
The voltage on the Green wire data + is 0.25V
The voltage on the green/white wire data - is -0.25V
So it seems that the BLC NL/ML does not have enough power to pull the voltages to the correct levels when a piece of ML equipment is connected.
So it might be that the options are:
- The ML power box
- A BLC 1611
- B3OHACK3R's solution
- or a real ML audiomaster
Location: Denmark
Hi Madskp, thanks for that! I will see to find an ML power box and share photographs of its content, just out of curiosity! Regards, Johan
Location: Netherlands
My B&O Icons:
Location: Denmark
No flux capacitor! It does have an LED though. Login to view image Login to view image Login to view image Login to view image Login to view image Login to view image Login to view image Login to view image Login to view image Login to view image Login to view image Login to view imageI really cannot tell what the (tiny!) electronics do. If I did not capture a detail that is of use, let me know, and I can try to make a close-up with a camera.
Location: Netherlands
My B&O Icons:
No flux capacitor! It does have an LED though Login to view imageI really cannot tell what the (tiny!) electronics do. If I did not capture a detail that is of use, let me know, and I can try to make a close-up with a camera.Thanks for the look inside. At least it's not just an empty box with some wirering from USB to RJ45 ;-) but I can be discussed if the components inside reflects the price these boxes are sold at used. I tried to google the 5 pin IC and it looks like it's some kind of power regulator link The small 3 legged transistor looking components seems to be some kind of diode link
Location: Denmark
Madskp, B3OHACK3R, would you believe that a BeoLink Passive provides the required MasterLink voltage (as the 1611 does)? I do have one of those lying around. With two CXs and an IR eye (and a remote) I could maybe also keep the number of sound factory boxes limited to two. Regards, Johan
Location: Netherlands
My B&O Icons:
Interesting. Roughly what I expected to be in there.
The 5-pin chip is an unregulated charge pump used for inverting the + 5V from USB to -5V.
The smaller ones on the other side of the board are indeed some diodes and two resistors. They are used for providing power to the data lines.
Location: Denmark
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