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Found this on a website for a local audio shop....

"There should always be more power going to the subwoofers than the rest of the speakers, since human ears are more sensitive to higher frequencies than lower. For example, if you have 4 x 50 watts going to all your mids and tweeters (total=200 W), then you should have at least 200 W or more going to your subs."

Just wondering cause I'm thinking about buying a 10w0 (125w rms) and I have a HU that puts out 50x4.

 
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not true at all.

there is no rule to audio that starts out "there should always be...."

there are no absolutes, custom2k1 and myself were actually just discussing that earlier this evning.

the fact is, many people run more power to the fronts than to the subwoofers.

At one point in time, the highs in my car were getting a sum total of 1450 rms, while my subwoofer amplifier was rated for 12-1300 rms at 12 volts.

I am not an isolated case, some people even do it for bragging rights.

for hardcore SQ systems, even inefficient subwoofers only need small amounts of power to achieve sufficient dB levels to match up to the mids and highs

 
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they are somewhat right as far as their reasoning, however. human ears are more sensitive to highs than lows, you can do a neat experiment for yourself to see it.

grab a rat shack meter, and play bass till you spike the meter at 126. didnt hurt, did it?

now play highs as loud as you can. can you hit 120? id be impressed! loud as all heck, too!

now take it into a room with a loud home audio system. get it to the same volume as it was in the car. still loud right? you metered what, 90 dB? interesting!

so what the ear percieves as the same volume may not meter the same? makes you think about the guys hitting 160 at 70 Hz, is it really that loud? meanwhile, you sit in the car that hits 148 playing music and nearly lose control of your bowels.....

 
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now, on another note, it would not be incorrect ot say that human ears are more sensitive to just MIDRANGE as well, which would be in direct contradiction to what your guys said above as well!

that the human ear does not hear highs and lows as well as mids, at reduced volume. its the concept behind pioneer's LOUD feature. at low volumes, it sounds like the mids are loud and the lows and highs are soft? boost them up! then at high volumes suddenly the lows are distortiony as all getout, and the highs are screaming in your ears? now we know why!

yet your boys make only one division, that between lows and highs.....

there are definitely no absolutes in caraudio

 
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Thanks for clearing that up rabbit