I'm not going for loudness going for sq
But u are correct sealed and ported would make a difference and my box is sealed to the lol

 

Hey, don't get me wrong .... I loved the sound of my 3 12W6v2's sealed. I just like how much louder they are ported. They play lower without worrying about over excursion and the SQ did not really shift that much. Still tight, accurate and snappy as hell.

 

That's why I love jl snappy tight deep sound, anyways back on topic if your from around niagara I'd let u listen to my w7 if u wanted. Ud just have to meet me , its way different then in a shop.

 

the comparison is between 2 w3's and 1 w7.....not 1 and 1. just because the w7 has more excursion, it doesn't make up for double the cone area.

if it were just 1 sub vs 1 sub, it would be a different outcome....

 

I guess my curiosity lies with the xmax. everyone knows that 2 subs move more air than one sub...all things being equal of course. My though was because the w7 had twice the xmax of the w3 that it would move the same amount of air.

 

I thought that too. I think I might of even made a post about it before or asked on someones thread. After some serious debate, cone area rules. lol, Go big or go home .... seems to be the same with amps....

 

The volume of air in the extra 13mm of excursion from the same size driver seems like it should equal the volume of air being moved by the second driver........however in a practical, real world scenario with correct enclosures and same amp power total the higher over-all output goes to the pair of drivers every time......

This example is a good one because of the high degree of similarity between the W3s and W7s........you could find a single driver that would do better than 2 crummy ones, but that is not an apples to apples comparison.

The old saying is "There's no replacement for displacement".......

 

That's more an automotive quote, but still fits.

Think of it this way, if you have an 6 cylinder engine with 3 liters of displacement, and a 3 cylinder engine with 3 liters of displacement, would you expect the same amount of power?

They are different animals, when you factor in amplifier power and enclosure design, this really messes with the numbers.

It's possible, that with enough power and the right box, you could get one W7 to do the same as two W3's. But you would probably cook it in a very short time.

Lyle

 

Do not forget about the coupling effect of placing two subs close to each other, which may give you a gain of around 3db, and that is nothing to sneeze at. A single W7 has no chance.

 

Does the coupling effect still apply if my box is two seperate chambers or is the coupling effect created outside the box.