There are two ways to move air, surface area (cone size) and excursion. It has a TON more surface area due to the peak roll surround. Adire Brahmas surface area is 436 cm^2, ID Max is 545 cm^2. Big difference. Basically, the ID Max has 25% more surface area than the Brahma, and the Brahma has about 15% more excursion than the ID max. I believe the ID Max actually has about the same or more mechanical excursion than the Brahma, x max is just a figure within linear limits. Can't remember, though.
Cool. does the brahma has a better motor than idmax? xbl^2 technology for brahma's motor, I'm still in search of more tech info on the idmax. I'm leaning idmax as of right now. Going to ported 2.5 30 hz box, I'm think just getting one instead of 2. as for amp 6500d mtx, on the side note, my test sheet say 2ohms 603 watt at 12.5, how does it put out 775 watts at 2 ohms as it claim on the box? Thanks for your input Jonathan, it's really helpful.
Well, if your amp is mono and 2 ohm stable, then ID Max d4 is your choice. The Brahma is a dual 2 ohm subwoofer, meaning it can only be wired for either 1 or 4 ohm loads. Your amp puts out 603 watts at 12.5V RMS, it is capable of 775 watts of dynamic power at 14.4V. Basically, it can put out 775 at 14.4 because the supply voltage is higher. As far as the XBL^2 motor, it's a fantastic design. The ID max uses more old school ways for SQ, by low moving mass, good linearity, and a strong motor to hold the coil in the flux. The ID Max is more efficient due to suspension design and low moving mass. Brahma keeps a little more linearity at high volumes. Both are excellent subs, I wouldn't say one design is "better" than the other, both designs accomplish their purpose exceptionally.
I'm sold on the idmax. I had just finishing reading the other post about the idmax voice coil problem, I called idmax support, they says that the new v3 had corrected the problem, is that true? new sub, new component speaker, new deck...just notice how stupid I was investing in sony(deck), poineer(speaker 3 ways), and SPL sub. Now have ot replace them all, it's almost everything..lol
I've posted on that thread. Go to the link where the post originated and actually look at the guy who started the topic, not the brightest cookie. The voice coil problem was mainly v1s, v2s had them rarely, but the v3 has corrected them, yes. Only "issue" I've heard from the v3 was surround ripple(it's actually designed to ripple), resulting in a little degraded SQ at higher volumes.
Thanks Jon looking out for best intrest of memebers here as you. And you are right the guy was blasted for not being too bright; but i figured someone else posted with this prob on a v2 so i figured mention it in case v3 might be an issue