The only clean way of acoustic "compensation" is in-wall mounting. But ok, that is not compensation, but removal of the cause.
Other ways are on-wall mounting, but theat leaves a dip in the response in the region between the baffle step and the wall support.
A driver on the back of the box is actually equivalent to mounting a box of half the depth on a wall, and the result is the same; a dip in the response.
Possibly one could call the use of a .5 driver an acoustic compensation, but then again it requires some electrical filtering.
...or one could be helped by the voice coil inductance in that its effects might more or less cancel the baffle step. But that is also sort of an electrical compensation.
Other ways are on-wall mounting, but theat leaves a dip in the response in the region between the baffle step and the wall support.
A driver on the back of the box is actually equivalent to mounting a box of half the depth on a wall, and the result is the same; a dip in the response.
Possibly one could call the use of a .5 driver an acoustic compensation, but then again it requires some electrical filtering.
...or one could be helped by the voice coil inductance in that its effects might more or less cancel the baffle step. But that is also sort of an electrical compensation.
Could this be done 2-way at all? If I place flat enclosure very close to the wall, there can't be very much baffle step loss. A little but not much. Enclosure 40-45 cm wide and only 15 deep, round corners. 2-way 6,5" + 1" tweeter.
Could be done. My experiment with 13 cm midbass and tw in two way sealed onwall mounted ended very well.
Depth is only11 cm.
Shouldn't that be AT or Below the Baffle Step. If the Baffle Step is 600hz and you cross at 500hz, haven't you eliminated the problem?
I think the original question is too vague. I think to make worthwhile responses we would need to know more about the specific speaker or speaker design in question.
If you push the Low/Mid crossover below the Step Frequency, that seems to be problem solved. Easy enough in a 3-way, next to impossible in a 2-way.
HALF way systems at the Step Frequency can solve the problem. Add a Second Bass driver to run in parallel with the first up to the Step Frequency.
Placement in a room can boost the low bass, but it is not that predictable. You can control the amount by proximity to boundary walls, but you can't control the range assuring that it blends in at the Step Frequency.
Beyond general Baffle Step discussion, with out specifics regarding the design in quesion, that's all it can ever be - general discussion.
For what it is worth.
Steve/bluewizard
Maybe with a conventional cone/dome 2-way,but not a problem with a FAST. I am listening to a pair now. XO at 160Hz.
dave
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