15" L7 pushed with 250 wrms?

[jacko 10+ year member]

Using the theory that doubling power gains 3db each time: If I pushed an '05-15" L7 with 250wrms, would it be 12 db's louder with the sub pushed with it's rated 1000wrms, Same box, same setup, only thing that changes is the amp. Is this right or wrong? (not that I am actually doing this, just an example lol)

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[cstabler 10+ year member]

I don't know about that, but I know sombody who pushed an 15 inch L7 (the silver one) with a crapy pyramid amp for almost a full year cliping the poor thing 24/7 it sounded awful but it was loud so he liked it then one of the coils blew and he sold it (like new) on ebay and bought a new one and is pounding again.

This amp: http://www.pyramidcaraudio.com/itempage.asp?model=PB136GX

 

[damanTO81 10+ year member]

you would actually only be able to doulble twice if this is true from 250 to 500 and from 500 to 1000 which would only be 6 if true

 

[jacko 10+ year member]

but isn't 1000/250=4? so wouldn't you be quadrupling the power= 3dbx4=12 db's?

 

[tRiGgEr 5,000+ posts]

but isn't 1000/250=4? so wouldn't you be quadrupling the power= 3dbx4=12 db's?

Basic math > you.

double 250 = 500. Then double the power again 500 + 500 = 1000.

Not everytime you add 250 watts...

And no. It is not a basic law of audio. More or less a simple guideline. It will not always be true.

 

[jacko 10+ year member]

Is this a good margin of error/rule of thumb?: doubling power= +3db(+/- 1db)?

 

[tRiGgEr 5,000+ posts]

No never really use it as a rule of thumb or expect it. You can see people in comps loose DB's on the mic from running more power. And you can see people gain 3bd from doing it.

So never expect it to be a solid rule of audio.