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mk1 and mk2 are slightly different. The mk1 has a 4 spoke basket, different dust cap, and slightly less xmax I believe. The T/S specs are close, but not identical.

Hmmm, in the RE poduction line what model is the loudest? is it the XXX's? or is their another model thats better? also If I go one 12" brahma do you think that will be good if I gave it's right amount of wrms and then later on get another one?..Im still a little confused, soon I should have like 800$ but I'm not trying to waste all of it on sub/subs & amp alone..

according to Adire, the Brahma can reach full excursion with as little as 600wRMS "in the proper enclosure" meaning a specific design and volume made to their specs.
altering the box type or volume will affect power handling directly as always.

The XXX has a greater excursion than the Brahma, and generally likes to have more power. 1000-1200 watts is usually a good starting point with a XXX 12"

omietrice wrote:Hmmm, in the RE poduction line what model is the loudest? is it the XXX's? or is their another model thats better? also If I go one 12" brahma do you think that will be good if I gave it's right amount of wrms and then later on get another one?..Im still a little confused, soon I should have like 800$ but I'm not trying to waste all of it on sub/subs & amp alone..

SX will be the loudest in a typical "street" install.

Isnt the SX more efficient too? It takes only 800wrms also so that might give you the ability to keep your stock alt and not cause too much trouble. Someone corect me if im wrong.

audiofreak12 wrote:Isnt the SX more efficient too? It takes only 800wrms also so that might give you the ability to keep your stock alt and not cause too much trouble. Someone corect me if im wrong.

"takes" no woofer "takes" a certain amount of power... there is only varying level of effeciancies which can sometimes be offset by enclosure.

You can throw 200 watts on a XXX if you want... but it wouldnt be worth it to buy the XXX at that power point.

The SX is a very effeciant woofer at ANY power point... this being said... its probably the one of the best picks for most any street type install - if you can swing the $.

now instead of intentionally misinterpreting someone's post, he was asking if the SX has a rated power handling of 800 watts. Granted that's a thermal rating.

To answer though, yes the SX is more efficient than the XXX.
The SX is targeted more for SPL, and the XXX is made as a true SQL sub, aiming for high output SQ. This is indicated if you have a good understanding of the T/S specs for both speakers, looking at the BL curve, and the motor design for the XXX.
If you're after straight SPL, don't get a XXX or a Brahma.