WISA signal pathway for different Beolab speaker types

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RAGH Posted: Wed, Jan 2 2019 6:37 PM

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Hi all,

I'm trying to understand the WISA signal pathway, in particular the amount of digital to analog (and vice versa) conversions within the pathway for different Beolab types.

From a theoretical perspective, I'd like to investigate the possibilities to have the least amount of analog to digital (and vice versa) conversions inside the signal path as possible.

I ask this because last week I bought a pair of Beolab 20 speakers, and already own a pair of Beolab 3's.

Regarding the Beolab 20, I understand they have their own DSP, so if fed with an analog signal this would be transformed back to a digital signal again (ADC) by the 20's, signal is led through the 20's DSP, and the signal then gets transformed back to an analog signal by the 20's own DAC. Is this correct? 

With Beolab 20, what would the signal pathway of a WISA enabled source (for instance a BV or the upcoming WISA enabled LG) be? Is this a digital pathway all the way from the WISA enabled source to a WISA enabled speaker? And what is the difference in signal pathway between a WISA enabled source and a Beolab 18 vs. 20 (including the pathway inside the speaker)?

Regarding Beolab 3, does the Receiver 1 transforms the received digital WISA signal to an analog signal via the Receiver1's own DAC?

Thanks in advance!

Regards, Roy