Millemissen wrote:

There is no ‘ordinary’ DAC in the BL5’s.

The audio processing is done within a DSP solution, that works with 32-bit floating point 180 MFLOPS, (512k byte Flash-ROM).

You can get a good overview about how the BL5’s work reading this PDF:

link

I am pretty sure, that a streaming transport (connected via spdif) won’t improve the sound of the BL5’s........but it will most likely add a certain flavour to the mix, that you may like or dislike.

The main point when choosing an external transport is much more how it works in daily use, how is the UI, how many (and which) streaming services and streaming protocols it supports.

MM

Thanks for your reply.

The file you refer to sounds like an interesting read - unfortunately I cannot get it to open (says the hosting site is down for maintenance).

Can this perhaps be viewed elsewhere?

I am also considering switching to Roon, so the transport needs to be Roon compatible - hence its native app is less important to me. 

alee wrote:

I was using the "big brother" to the Node 2, which is the NAD M50.2.  Digital output, etc,, but has a 2TB NAS in RAID configuration and a CD player (with CD ripping capability).  It uses the Bluesound app for control, and includes DSD conversion as well.  I was very happy with it (and with the digital coax out, no need for a optical-coax converter like with the Core for digital output).  

In the end, though, I ended up routing everything through a beosound core (and using just normal Powerlink inputs) because I preferred to have the auto on/off for the speakers (no need for a beoremote anymore) and just control the volume via the core, if necessary.  Convenience won out over superior audio quality.

As a note: the biggest difference between these devices and something like a chromecast (or iPhone airplay) is that the bluesound components are servers, so playback is not affected by the status of the bluesound app.  It's like the difference between a beosound moment and an essence, as I understand it.  If a chromecast device continues to play audio even if the computer with the open browser page goes to sleep, I stand corrected, but when I last used them, that wasn't the case.

 

Did you experience any noticable change in sound quality now that the M50.2 is routed through the Core? 

I would assume the M50.2 is a major step up compared to a Node 2 (and also to a Core). 

alee wrote:

I guess I should have clarified: I didn't want to open up the walls to run a second set of wires for digital coax from my AV cabinet to BL5R, then a second cable to run from BL5R to L.

As it is, I have Cat7 cables behind the walls for PL connections from the av cabinet to the BL5R then another cat7 behind the walls running from BL5R to BL5L.  I've got optical from my TV going to my NAD M50.2, then optical out from there going to my core (so music streaming and TV go direct to the core). Powerlink from core to speakers, which is fine.  I get an almost imperceptible hiss.  

You have inspired me to come up a dual wire, though.  If I can bundle Powerlink (just power and volume) and digital coax in one cat 7 cable using a custom connector, maybe I can wire it up like it's supposed to be.  I'll take a look at it and report back.

Sounds like this way you are essentially using the DAC in the COre, rather than the (presumably much better) DAC in the M50.2. 

As I understand it, the analogue signal is then converted to digital again by the BL5's AD convertor. 

The M50.2 has no DAC. It’s just a streamer. 

Yes,

I’m now using the core’s DAC rather than the BL5’s. That being said, you ha e inspired me to look at a custom wiring solution to go straight digital end to end. I may try it. 

pauliander wrote:

Hi everybody, I had a similar question regarding the quality of the BL5’s internal DAC some time ago. After we built our house I decided to put powerlink cables in the walls to connect BL5 to each other using a Beocenter 2 and a high end external DAC. It was more convenient to run powerlink than 2 coax and volume control cables through 20 mm electrical wall pipes... I have run my set about 2 years like that. According to the local B&O dealer (Knokke) a change to direct digital coax cables would not make an audible difference. For convenience I was adviced to use a Core which I eventually not bought. Instead I ordered new coax and volume cables at Sounds Heavingly. The stock coax cables from B&O were very thin and had large blocks at both ends. Steve’s cables also were just to thick to pull through the walls. However I disensembled the ends and was able to pull them through then. Boy was that B&O dealer wrong about the possible difference in sound quality. No offense but I only can guess these guys never compared it... Differences are huge between a powerlink fed BL5 and a direct coax fed BL5... even when using a decent DAC such as Chord Mojo. Long story short BL5’s internal DAC is very good 😕 I have not tried the Core but in my set-up powerlink was the weak factor... cheers

Actually, i had the same question.

Iam driving my bl5s through a premium dac in to aux on a bc2 and then i got curious to feed them directly with digital and at the same time use the powerlink all made possible by the beosound core.

So i had some questions about the setup and contacted B&O support.

And got this surprised answer...?

Login to view image

Anyone?

Did you ever get to the bottom of this? Which streamer are you using with your beolab 5? I’m using a dCS network bridge with amazing results

Not really, i am using a beosound core and both PL and digital. To the BL5 with good results

The Dac in the BL5 is an AD1852, however as already mentioned this operates behind the DSP so it is not replaceable, how ever:

one of my BL5’s has intermittent themal protection issues and the frequency of the issue is increasing, because the spare parts seem to get out of stock in the (near) future I have been looking at other ways to keep using this magnificent speaker.
in another thread I saw that the main board basically consists of a power supply, the central DSp unit and 4 separate ICE modules, these seem to be the standard 1000w and 250w ICE modules which I have bought in the past for custom applications.

so the power supply is repairable or replaceabke,  the Ice modules are still being manufactured and can be purchased altough not easy.

The DSP and crossover part is not something you can buy or easy make your self but technically you should be able to swap it with a Minidsp 4 way crossover and use dirac live for room correction.

altough this will be quite a hassle from cabling point of s would theoretically convert the speaker in to a Beolab 5 looking speaker with many of the Beolab 50 functionality and room adjustments.

any one ever considered this?