No, not at all.Yes. When i start playing with EQ, they start Sound like small jbl wireless speaker oh i see how it works
Speakers can play from 49hz. Is it good idea to set sub to play all below 49hz, so the speakers will play from it natural 49 hz?
First of all, this -3 dB at 49 Hz is for anechoic environments, it's not the in-room response. Even if you could measure the "natural" roll-off frequency in your room, there simply is no need to. That's the big advantage of real bass management. Finally, your speakers will sound better if they don't have to play low bass.
The sub is not just to extend the bass, it can actually help.to improve the sound. Not with devices like the Audiolab, of course. It's simply technically worse in that respect.