The published fitting range for some power models (e.g., Solana SP) indicates a minimum of 40db at all frequencies. Does that mean the minimum loss at any frequency has to be 40db, and so the aids won’t work that well for audiograms with less than 40db loss in low frequency range? (I have less than 40 below 750hz, sloping to profound at 1.5k and beyond.) Can the gain in the low frequency range be decreased/turned off to suit the audiogram? If so, why the fitting range does not begin at a lower db, like 0db for other models? In other words, what’s the real difference between 0db minimum and 40db minimum in the indicated fitting range? Does a 40db minimum pose any limitation/constraints for fitting the kind of loss I have, or is it only the maximum in the fitting range that matters?