We're all familiar with the advertised "frequency range" that sometimes forms part of the cabinet specs. provided by the manufacturers. A typical example would be "55Hz - 22KHz" or something like that depending on the driver. I'm pretty sure that this information isn't really that useful in isolation unless you know what db level it relates to(? I may be wrong here as well). But that's where I have no idea what they're talking about. For those electronics experts here (and thank god you are here!), what exactly does the following mean? (as an example only). A 500 watt 8 ohm 410 sealed cab with a stated frequency range of: 42Hz-18kHz, at -10db points; and 55Hz-14kHz at -3db points. no charts or graphs. The negative "db points" is really perplexing to me as is the db point itself. Is that good, fair, poor? What exactly does that mean? Do you need to compare these exact specs with another cab to draw any conclusion, or are you able to evaluate the performance of a cabinet on its own based on this information? I'm hoping that its not too complicated to explain in semi-layman terms.