No.no more than 3/4 for sure.
It depends on too many things. 1/2 way may be too much or too little. The gain adjustment does not go from 0 to 100% power output. It is used to match the input sensitivity and that's it. If your headunit has a very low output voltage, you may need to drive the gain pretty high. This may cause noise from the amp but it's not likely to be too audible if it's just on the sub.just an estimate how far do you think i will be from maxed out with out clipping im about half right now
no more than 3/4 for sure.