Originally Posted by torii
Originally Posted by PlasmaPZ80U
Assuming we are talking about headroom and not merely frequency response, EQ will not increase headroom.
if you shift away from the super low frequencies, it will create more headroom in the upper frequencies if Im not mistaken...so if I were to compare, I would adjust the rythmik sub to focus just on 31hz and up when comparing to another sub that was strong 31hz and up...maybe my thought process is off.
Well, yes filtering out the sub 20Hz stuff could free up some headroom for midbass region. But if, my memory serves right most here didn't really prefer doing that unless the goal was with the multi tune ported subs to reduce port noise/chuffing by leaving all ports open.
Brian Ding told me that for my LV12R, which has a single port tuned to 19Hz I would not gain or lose headroom regardless of the bass extension/damping choices (low, mid, high). So, at least in that case, even though it changes the low end response, high extension/damping won't increase midbass headroom.
Which is fine because it can play up to 6dB louder at 30Hz than 20Hz, and up to 10dB louder at 80Hz. So, the low end will compress first at any given SPL level, though because the high setting rolls off 20Hz by about 5dB at 20Hz vs. the low setting, that can allow one to access more of the midbass headroom while keeping the low end relatively uncompressed.
But again, this is more to do with frequency response than absolute headroom and we haven't even factored in boundary gain or room gain, or multiple subs.