Using my current test equipment, I referenced 80db at 1khz and my greatest variation is -7db at 63hz and +4db at 40hz.I would be thrilled with that result.
speaker/room bass modes
Question: If a room has a 60hz suckout with speakers "A" which have the woofers one on top of the other at the bottom of the cabinet, and you replace them with speakers "B" which have a different woofer configuration, one low and one high on the baffle and possessing a different crossover and radiation pattern, and place them in pretty much identical postions within the room, will the suckout remain? Does the room have the final influence on reproducing the frequecy or can it be overcome with a different delivery from the speaker?