I am considering upgrading an Avatar speaker 2x10 cabinet to Eminence Deltalite Neodymium speakers. The issue deals with cabinet design. The stock Delta 10's on the Avatar, have a low fequency response of 63Hz, and the cab is tuned to that frequency. However, the Eminence Deltalites are spec'd out to a low of 40Hz. What would happen if I were to put them into a cab tuned higher than the lowest frequency response of the speaker? Thanks in advance.