Might be an odd question for such an old and discontinued speaker but is the low pass filter adjustment continuously variable. IOW's lets say the dial was rotated half way between 105 hz and 114 hz, then would the outcome be something like 110hz ±? if so how does this work. With the other adjustments one can easily detect detents while adjusting the gain of tweeter, woofer and midrange, while the adjustment in the low pass filter feels "continuous". Perhaps this is a digital adjustment of frequency changes? Thanks in advance.