fact vs fiction

[limitkid7 5,000+ posts]

hummmmmmmmmm..........

 

[i3abyjay25 10+ year member]

why??? what do u have in mind Warren??

 

[limitkid7 5,000+ posts]

i know for a dam* fact 2 10w7s off 1k watts is louder than 1 12 w7 off 1k watts...

rephrasing it...

i don't know for a fact, as far as what my EARS tell me, the 2 10s sealed are still louder

 

[i3abyjay25 10+ year member]

i know for a dam* fact 2 10w7s off 1k watts is louder than 1 12 w7 off 1k watts...
rephrasing it...

i don't know for a fact, as far as what my EARS tell me, the 2 10s sealed are still louder

but whats louder to the ear isnt always louder on mic....

 

[Berry47 10+ year member]

THe tens might also have been reaching the resonent frequency of your car or even your head, causing them to seem louder.

 

[limitkid7 5,000+ posts]

...........

 

[Termlab 10+ year member]

or maybe the 12'' you heard was in a bad box //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

i believe myself in a theory "more power less cone area"

yes, that is a theory to live by. get 1 subwoofer run a scud of power to it and truely be loud //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[BASS OUTLAW 10+ year member]

my single 12" in sealed 700w rms to it , was louder than my friends 2 12" in sealed 300w rms to each... now i went ported to 35hz loudness is noticable.

in ur case its hard to tell, what exactly is louder.... at least for me...

 

[audioholic 5,000+ posts]

If you have one sub with x amount of power, and you keep the power the same and add a second sub, you gain approx. 3db.

This is a popular misconception any more. It stemmed from the vague rule of doubling cone area would yield +3db's. But, in order for this to happen (or even come close), both subs (the old one and the new one) must be radiating the same as the single one was previously. Hmmm you might be thinking. If you add a second sub that must be moving just as much as the first one, what also must you add/double? That's right, the power.

But now you're thinking there's also a rule that if you double the power, you'll gain (approx) 3db's, ignoring power compression, resistance, etc. This is if you were able to double the power to your sub(s), and they were magically able to utilize this power 100% efficiently. A speaker's efficiency at using power goes down as power increases. The second 500 watts wont yield as much of a gain in output as did the previous 500 watts. How often in the real world do we have setups that we could, without changing anything else, double the amplifier power without causing issues? Not too often. And even in those cases, a +3db would not be realized.

These rules of doubling power and/or doubling radiating cone area (most people seem to forget the radiating part of that) yielding a +3db is very very theoretical. It should not be used as some sort of measuring stick, its not very accurate, and there are many misconceptions floating around about exactly how these rules work.