7 responses Add your response
Start with perfectly flat response and experiment with incremental adjustments toward your choice of target curves.
I ended up with a perfectly flat curve to 35hz and a gentle rise (+2-3db) down to 25hz, followed by a steep "subsonic" roll off. The difference between this and flat to 25 hz is rarely perceptible, but occassionally manifests as either a) slightly larger sense of the recording space or b) gently vibrating coffee table.
PS IME, response below 25hz will yield nothing beneficial for any program material in my music collection.
In my opinion what you want is flattest possible in-room bass without causing problems. How you get there depends on the sub's inherent response and the room acoustic situation. Note that once boundary reinforcement and modal effects are factored in, what may have started out as "flat" response is now far from it.
Duke said, "In my opinion what you want is flattest possible in-room bass without causing problems......... Note that once boundary reinforcement and modal effects are factored in, what may have started out as "flat" response is now far from it."
How would we know this? Is there any way to measure this?
If this is true what can be done to change it?
I filter subsonics because the odds are very very low that any such info is deliberately "on the recording". I don't need to hear the subway that happened by or,more likely, mechanical noise from my source (rumble)
I understand that some purists may disagree
I use RTA to measure in-room response on-axis at the listening position
There are any number of devices out there for this purpose - or variations therein