do you have a design for this..for a sealed sub?
When you say design, you mean you need help designing a box? Because besides that, it's pretty straightforward for a subwoofer.
anything special about this amp that is any different from a BASH amp...say 300W
Well there's the fact that
- it's not a BASH amp
- it's not a plate amp
- it's got a lot more headroom (775W two channel stereo @ 4 ohm)
- you can probably find one near you, rather than ordering it from North America.
- It doesn't have any built in arbitrary high pass filters
I'd say so. Of course you could probably step down to an XLS2000 and never know the difference.
but, for my room size (12x14 current to 20x14 in future) and for a sealed sub i dont see why i would need anymore than 500W amp...even a 300 W should probably do well...make 2 subs instead of 1.
775W is only 4 db more than 300W. It's really easy to run out of headroom. Often if you want the deepest bass, you will need a bit of equalization to get the desired frequency response curve in room. A lot easier with 775 real watts on hand than with 300 "Bash" Watts. And if you were to bridge one XLS2500 per Driver, that's still only 8db more headroom than a 300 watt amp. It's not nearly the overkill you presume it to be, especially at bass frequencies which even at higher SPL don't "feel" loud. Watts are cheap, and these drivers have extensive heatsinking. Why you would suffocate them is beyond me.
Better to get the reliably powerful and stable amp now than to cheap out and be under constant upgraditis later.