How much can you gain depends also on power suply and on speakers if they reach limit.

quote:

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Originally posted by Q:
(10 X log 3800) - (10 X log 2000) = difference in dB. ...2.7875 dB

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But we all know how "on paper" works at times. but on paper you should get almost a 3 db increase.

I know last year when I roughly increased me my power the same percent you did I went up over 3db. Also on the same note a system that I had seen this year that doubled power didnt go out 3db went up but not nearly 3db..

Then another actually dropped power to a more efficent amp and spl went up due to car able to handle the amp and power it better.

So all will depend on the system as a whole.

Last think about line drivers...and also yours may vary. I know that last year when I had one I gained absolutly nothing from useing it to not using it. And after a certain point I lost in SPL...

If you have a subwoofer that lets say has a max excursion of 3" Peak-to-Peak.

if with 1000wRMS it reached 2" Peak-to-Peak, with 2000wRMS will it reach 4" Peak-to-Peak??? doubt it, maybe 2.5" P2P.

So the +3db rule with double power sometime doesn't work. Maybe your'll get a little less then 3dbs, maybe 2dbs.

but you can never have too much power.

quote:

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Originally posted by G8 SPL:
I run street class 8 12" subs

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A=2
20log A = 6dbs

A=1.4
20log A = 3dbs

A = Gain

power level was x, 2.1x, and 4.3x, respectively.

All measured X was well within 60% of Xmax.

The results were within ~.1dB, so we decided that was close enough to derive a conclusion as to the accuracy of the theory, you math head you.

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