Would it be practical to connect potentiometers to 1 or all of the out puts of a 3-way crossover? Reason being, for example; 1 on the low output to control how much power is sent to the subwoofer, to decrease/increase bass. If so, I am assuming linear? And 10k ohms? Question 2: what would be ideal for volume pots? 5-10k ohms? Logorithmic of course. And would this be the same for low-power as well as home theater systems (5 watt vs 1k watts)? Last question: is there a name for the type of transistor I need for ... Let's call it a frequency activated transistor; something that would open a 4v circuit to LEDs at a set 150 hz frequency (LEDs that light to the beat)? Any help is appreciated