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On 28 Dec 2003 06:26:01 GMT, HRA (BANDIT2941)
wrote:

Adding a second sub will do a lot more for you that changing your sub or
getting a bigger amp will. Even without adding more power it will get
considerably louder. I replaced the S12L5 in my wife's car because I killed
it for the second tim eand put in a pair of older RF DVC12s and it's louder
and better sounding.

Given that adding a second sub getting the same exact power as the original
sub, you will see a 3 decibel gain. I don't believe that adding a second sub
while halving the input of both will show much of a gain. In other words, 2
subs each getting 75 watts each is not going to be significantly better than 1
sub getting 150 watts. Any thoughs?

Actually, doubling the cone area (adding a second sub) should raise
the output by 3dB, even without increasing amplifier power. Adding a
second sub, and giving it as much power as the first sub will give
approximately a 6dB gain, not 3dB.
So to use your example, two subs getting 75 Watts each should be 3dB
louder than a single sub receiving 150 Watts, assuming the subs are
the same type.

Scott Gardner