Raidho X-1

Great small speaker which sounds like a great small speaker, total mistake, given your room size, You need a much larger full range speaker with bass augmentation.

It is a mistake to think that just because you have subwoofers you can achieve a seem less blend, this is the reason why most of the worlds best speakers are full range.

The very fact that a designer knows how and why to crossover a specific driver is why a full range speaker tends to sound like an integrated sound source.

If you like a transparent and fast loudspeaker there are many good choices with those speakers being full range loudspeakers.

It is also way easier to integrate a full ranges speakers bass roll off with a subwoofer then a mini monitor.

Great small speakers for great small speakers. Personally I would not recommend using such a setup for such a large room, you have three big problems:

1: Small Raidho speakers can not play loud enough for such a large room.

2: If you use a crossover you will most likely kill the sound of the speakers

3: It is very hard to get a seem less match with a mini monitor and subwoofer, made even harder by the speed and articulation of the Raidhos.

Best advice get a great small floor stander which will go low enough for an easy hand over to a subwoofer with an acoustic crossover.

Actually wrong concerning the REL there is no crossover, you run the speakers used with the REls as full range speakers, and the Rel derives its in comming singnal via the speaker level inputs, a proper Rel setup use only the crossover in the woofer to match the starting point of the woofer with the acoustical roll off of the main speakers happening as a natural part of their in room response and natural roll off.

concerning volume pressurization a speaker sees the entire volume of air, a mini monitor is designed for near field listening.