Hello from Romania . BeoVision 7-40 (current) related . Contains some technical questions .

Well as the title says : hello !

I run a small Home Cinema department of a bigger firm in Romania and recently one of my customers requested a BeoVision 7-40.

I sourced the TV for quite a bargain price and obviously passed along the savings but after installing everything and routing almost all the cables I`m left with a bunch of questions.

Why do B&O products use power-link for audio ?

It doesn`t take an engineering degree to know that routing all of those low level signals close to one another over such a long distance (think about the rear 5.1 speakers) gives you poor performance and is a great way to introduce noise. 

Why are all the home theater speakers internally amplified  ?

Why use the single most unwanted channel in the whole AV industry to pass along audio ?

By that I mean analog low level .

I can understand the desire to include audio de-embedding in the tv . (since it`s not audio processing) .

I can almost understand why you can set the speaker parameters in the tv (although I doubt most B&O product owners also own matched microphones and the software suite to calibrate speakers) but why doesn`t it have an auto matching suite like most 5.1 receivers ?

One final question :  Why doesn`t the damned thing have any kind of digital audio out ?

I mean honestly . Is there any reason to not have digital audio out other than keeping the final customer from using non B&O products ? Toslink or SPDIF

I managed to solve the problem by using a NAD 757 receiver that also has 5.1 line-level inputs that you can later process and cables from a small firm in the UK that I have no idea if I can mention on this forum .

The small firm makes cables that have proprietary B&O power-link connectors on one end and RCA on the other.

 

Thank you in advance for taking the time to reply to this thread. I hope I did not break any forum rules. 

 

Right,

Sounds Heavenly is a sponsor here and provided the cables for this installation.

 

Digital or analog ... (for me) it does not matter ..

Use your eyes and ears to judge about quality and not a datasheet :-)

I'm a computer techie and learned not everything should be digital

My ears and eyes are not digital either :-))

Nico

You are partially right sir :)

I do not usually get tangled up in the names of channels . This is different.

The source of the signal (blu-ray) is digital and it makes sense for all of the transmission channels to be digital and thus not very prone to interference up to the speaker if possible.

What I`m trying to say is that using line level channel from tv to speakers is a very good way to loose clarity and introduce interference.

 

The picture is very pleasant though.

Never had any interference problem with powerlink cables, even very long ones (30m). With a good insulation, signal level can travel long distance without problem with powerlink.

Maybe one day B&O will add a DAC in each speaker and let down analog inputs, but currently, analog line level input with an active design (active speaker, active crossover), is by far one of the best solutions available. The amplifier inside each speaker is taylor-made to get the most perfect sound possible for that specific speaker. Try to do the same with a 5.1 amplifier, passive speakers and a microphone-autocalibration (I must agree that for speaker distance and audio delay, a microphone autocalibration is better than inputing distances in the Beovision)...