Hi Raimonds, It's always great to see a creative innovator coming out with new ideas and products. Thanks for sharing here.
But I have to say, I really don't think that there are alot of myths created by competitors floating around regarding latency.
I think most everybody playing with FIR understands the difference in relatively small DSP processing latencies, and FIR filter length latency.
And I think most folks associate FIR filter length latency with one half it's length, because that's how it works to make linear phase filters. Or at least that's my understanding....pls correct me if I'm wrong.
Anyway, nobody said FIR latency always equals one-half its length in ms; indeed, that's why I put (impulse centering) as a specified condition for the latency figures regarding the number of the taps you describe.
I take it you're you're moving the impulse to the front of the filter. I've been hoping to find time to play with moving off center both directions, to better understand effects......pre/post ringing etc.
I looked at your graphs a little closer and see you went with minimum phase xovers.
I don't yet understand the point in having a boat load of taps just to replicate minimum phase....????
To me, FIR means linear phase. Yes, I get many of the other benefits, but still, just saying....
I completely agree with comments about Monkey Forrest software... just shoot me
But I do think anybody buying the four audio unit fully understands the latency that comes from down sampling (along with the greater low-freq resolution 
Whatever you build/sell....I'd beg one thing....please do not make it require proprietary software to build the FIR files....
pls let it use files made with programs like FIR Designer, or rePhase.
