The relationship between the size of the woofer and the quality of the sound can not be generalized. Another aspect is that, in general, the magnet of the horn also profoundly affects the sound performance of the horn! The problem, of course, is the same: the magnet is not the bigger the better, but the stronger the magnetic. The stronger the magnetism, the higher the efficiency of the loudspeaker, in the case of receiving the same power, the greater the loudness. , the stronger the control! But in general, the larger the size of the magnet, the stronger the magnetic. But there are also big differences between the different types of magnets, so it's easy to get the same misconception as "bigger is better" : "bigger magnet is better for speakers.
The woofer caliber is larger, in the sense of listening to the bass will obviously have more strength, more sense of quantity, diving is also very deep, bass more impact. But, if it is a small size of the speakers, plus set-up voice does not reach the designated position, driving power is insufficient, bass easy fuzzy one, such as intensive drumbeat, although small horn bass will show clean, transient response is very good, but the bass as soon, is not suitable for large dynamic work and show the grand scene, in short, is the bass has no sense of "shock"!
Although the frequency response of the same box, the woofer of the large caliber speaker is obviously better than the small size of the speaker, because the low frequency is not only heard, sometimes it is necessary to "feel" out. The larger the diameter of the diaphragm of the large-diameter unit is, the larger the volume of the pushing air is, and the more obvious the sound pressure is. In short, it is more likely to excite the air, giving the feeling of air rushing. However, in order to produce such a feeling, we need to be in the previous discussion of the box, amplifier, power and so on all do match. Therefore, relying only on the large size of the unit, but not to provide a solid box, reasonable volume, ample power reserve, scientific circuit design, no matter how large the size is a waste!
In addition, if you listen to sound room area is smaller, so the advantage of large size unit is not reflected. Instead of spending more money on "size", it is better to choose a good overall upgrade, but also with the size of the listening environment matching speakers.