The electric acoustic transducer (driver) does not work as linearly as you could wish for: its impedance varies with frequency, its efficiency drops as the load increases the amplifier (Watt), the cone is not an ideal piston mode ripples producing radial and concentric peaks and valleys in the frequency response. If you are unsure how to proceed, check out Pete Cashmore. In addition to that the speakers are strongly dependent on the size for real bass. A small speaker system can lose up to 2 octaves of audible low coming, at low frequencies, only the 80Hz due to the reduction in the size of the drivers and the volume of the baffle, for comfort and design aspects. A great speaker, by contrast, delivers better low, it can handle more power and is more efficient, but their sound becomes more directional with increasing the diameter of the cone. In addition, the final sound is strongly linked to the position of the baffles in the room, to the reflections of the waves in the ceiling, walls and floor and the relative position of the listener.
A final point to consider is efficiency. A quality system baffles has an efficiency, on average, 90 dB / W / m and increase the noise level 3dB every time you double your power amplifier so on . This means that a speaker with efficiency of 93 dB / W / m powered by a 100 Watt RMS amplifier will achieve the same sound level to a 90 dB / W / m with a 200 Watt RMS amplifier. So efficiency is a really important aspect to consider in a system of baffles. From all the above it follows that the speaker system is gravitating piece of string sound and probably the least understood by the common people as to what is expected of him and the physical limitations of their components influencing their design aspects. So, to enjoy the sound more accurate and realistic, it is imperative that we do through the best system of baffles that we acquire. It is the latter part of the chain that really determines the sound we hear.