Please, when designing studios or even seting up speakers at home, put the correct size loudspeaker in the correct size room.

It's an acoustic fool's trick to simply install the largest speaker available. The golden rule here is, do not put a loudspeaker in a room if it's lowest frequency is below that of the rooms lowest frequency.

Smaller speakers often perform more accurately than their larger counterparts. As a good guide, the speakers lowest frequency should be the same or higher than half the wavelength of the room's longest dimension. This is primarily because a loudspeaker that goes lower than the ability of the room will create a large hump approximately an octave above the speakers fundamental frequency.

If you do not following this principle, you are only creating an acoustic problem that is almost impossible to fix, regardless of how much expensive foam or clever room baffles are applied. As we said, just don't do it.

If you need a bit of help working out the frequency of your room remember, Sound travels approximately 1 foot in 1 millisecond. The wavelength at 1KHz is approx 1 foot. Halving the frequency (500Hz) will double the wavelength to approx 2 feet. Doubling the frequency (2KHz) will halve the wavelength to approx 0.5 foot.

62 Hz would then need around 32 foot and 31 Hz would need about 64 foot. In short, accurate low frequency reproduction needs a bloody big room.