BASS mostly depends on install... I will shar details regarding that...
These speakers are expensive (32000 yen in Japan = 50000+ in Pakistan) because of their detail and clarity.
Also lower power speaker will perform best when you dont have amplifier...
This power means how much they can handle not how much power they have... since you will be using these on a headunit which is only 50 watts max... so they will have better control on lower power then speakers which are designed for higher power like amplifiers!