BeoLab 3500: how to use the DIN connector as AUX IN

[Madskp]

KolfMAKER wrote:

Did you use a B&O original 8-pin cable, and connected that to your DIN to Mini-Jack cable?

No the cable itself is from af B&O 7 pin DIN cable, but i have soldered new conenctors in both ends of it.

KolfMAKER wrote:

I think the big difference with the B&O original cable is that the B&O cable has a shield, besides the GND for the Left and the Right channel.

Yes, but I have used the shield in this cable as ground.

KolfMAKER wrote:

And that this shielding is connected to pin 3, 5 & 7 on the male connector. Do you agree?

Yes I have connected that shield to pin 3, 5 and 7 on the 8 Pin male DIN connector in the BL3500 end.

KolfMAKER wrote:

Do you think that I could use a DIN to Mini-Jack cable that could do the same, if it has separate leads for Left, Right, Ground Left, Ground Right and shielding?

It could be worth a try. The shielding should then probably only be connected to the outer ring of the DIN connector and not be connected to the ground pins (3, 5 and 7).

BTW on my adapter cable there is no connection between the ground pins and the outer ring in the DIN connector

[XavierItzmann]

Good call on ordering the Apple USB transformer from mains to 5V.

Many observers through the years have pointed out the remarkably high quality of these, in both design and construction.

Beware, however: fakes abound.  Fakes that even have all the little Apple characters and codes.  So, buy from a reputable source.

---

PS: while this video is of a cable, which is a different and later technology that many Apple transformers, it explains why the Apple cable is $130 vs. similar-looking Mistery Brand cables selling for $13.

TL;DR: It’s what’s inside.

[KolfMAKER]

Update > Solved

Here’s another update, after having received the Apple A1400 USB wall outlet charger.

I can now confirm it is true. This charger / step-down converter does not cause any Hum. To be exact, there is a little Hum, but only hearable when the ear is within 20cm of the speaker driver.

Important notice: there are many USB chargers that claim to be Apple Original, but are not. Since Apple sometimes changes the design, it makes sense to check the Apple website for information on checking the originality. Mine looks like this and works:

Thanks everyone for thinking with me and suggesting checks and solutions!

 

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