@torke
More watts aren’t always the answer. I have the SF Amati G5’s and have PS Audio BHK 300 amplifiers that put out about 600 watts @ 4 ohms and I get amazing bass.with them being 91db efficient I rarely turn the volume past 30 and if I go to 40+ the whole house starts vibrating.
The speakers are 4’ from the front of the speaker to the front wall and 3’ from the side walls. They are 7’6” apart and my listening position is 7’6” from them.Oh ant they are toed in so they aim at my shoulders.
Having said all that, I can honestly say that it’s not the speakers. I have no knowledge of your amps or your room, but your room and placement make a huge difference in the sound of these speakers. What’s your room size? What is your floor made of? Do you have carpet? When you clap your hands near your listening position can you hear any echo? Same question but near your speakers? How far apart are your speakers? How far are you from your speakers? Before you got the SF speakers, what did you have? Did they seem lite in the bass also? Have you double checked that the speaker cables are connected correctly?
All the best.
