2xWAU used as crossovers

John61CT

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Jan 10, 2026
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I am planning a stereo system with

"full-range" OG LS50s main pair, HPF'd somewhere between 170-300Hz

stereo MBM pair, bandpassed between LPF blending with the above, and an HPF between 70-90Hz

then mono sub(s) below that.

My idea is to use two WAU for handling the crossovers, the "top one" driving the main pair and just not using its mono sub output,

and the bottom one, where the MBM need their LPF "manual blending" at the top with the main pair's HPF

but the mono sub output can be used as is.

I was thinking, use one WAU for each L/R side but now I see no advantage to that.

I would need to use MR grouping of course for interconnects, when going to 5.x for HT, adding an Ultra (feeding Schiit SYN) to act as the "master" streamer.

At that point the WAUs are acting like those car amps with built-in DSP, just higher SQ and better flexibility for future repurposing.

Any feedback welcome but rather than just general "why?" "too pricey" or "better ways with other amps" I'd appreciate specifics on how / why this idea itself would not work, as in major flaws in my understanding of how Wiim works.

TIA

Side issue, not just for @harkpabst the WAU should deliver plenty of power/current right? Pretty close to 3e A7 mono...
 
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