mhardy6647
Lunatic Member
I thought epi 8" speakers are air suspension speakers.Did I think wrong?
You think right.
It keeps the VC moving in the gap. It'll make any accidental misalignment audibly obvious. A higher frequency can be helpful in that regard (say, 50 to 70 Hz), if one prefers.Does the 30 hz tone automatically center the voice coil in the gap, or does it just help you find a position that does not rub?