Just testing a sub that came in the mail and I wired it up to my plate amp. What is it supposed to sound like? I had the volume up to "4" on the plate amp and it wasn't outputting all that much. Does the enclosure really increase the output a lot?
yes, playing a speaker free air allows the rear wave to cancel the front wave. the diameter of the speaker will affect this, if the wavelength of the frequencie played is shorter than the driver diameter, cancellation is much less an issue... pretty high frequency for subs