Bigger 2.0 desktop speakers vs smaller 2.1 system?

I'm in need of desktop speakers that fit under my triple monitor setup, 13-14cm high.
I have a 7x100W HT amp and an 8CH DSP, so no need to design crossovers or use plate amps.
I already own a pair of tang band w2-2243s widebands that I planned on using for these desktop speakers, but they shouldn't be used much under 500Hz, contrary to Tang band.

I want the system to be "full range".
I planned on using the Tangband W5-1138SMF as midbass in a 6-10l ported or PR enclosure tuned to 35-40Hz.
But I also want to go as cheap as possible.
So I found the Omnes SW5.01, with similar specs. It has only 7mm of xmax instead of 9mm that the W5 has, but it is half the price.

Now I wonder, what would you recommend?
  • Using 2x Sw5.01 per speaker in 16l ported enclosures tuned to 33Hz in an MTM style box on it's side.
  • Using 1x Sw5.01 per speaker in 6-10l ported enclosures tuned to 45-35Hz and an SW8,01 sub in a 40L box tuned to 28Hz.
  • Using 1x W5 woofer per side in 10l ported enclosures tuned to 35Hz.

What do you think would be the best for audio quality?
Also, tuning a 6-10l box that low and staying under 20m/s port air speed with 50-80W is hard if not impossible. Any tips?
The 16l box is also stretching my desk space to the limit.
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Green: W5, Orange: 1xSW5.01, Pink: 2xSW5.01, Purple: SW8.01
All have 80W of power and HPF set to not exceed Xmax.


Any other cheap recommendations are also welcome.
 
You seem have left reality gone way deep into a techical specification worm-hole to make any sense. The listening position of Desktop speakers is usually less than 1 meter With 80w and DSP you can achieve 90dB@40Hz using an empty Diet-Pepsi can as a driver!
In these circumstances Xmax is not a real thing, it is, and always has been a car enthusiasts' obsession. Walk into a high-end Hi-fi shop and mention Xmax they'll throw you out.

My desktop system uses 5" bass drivers in 8 litres. The sub uses an 8" driver in 20 litres - I haven't switched it on in months - the juice ain't worth the squeeze.