I suggest you change it to comply with the Manufacturer's recommendation. If it sounds the same or better, great. If it sounds worse, change it back.
IMHO, the less VTF the better, (as long as you have the sonics at their peak performance of course).
Good Luck!
IMHO, the less VTF the better, (as long as you have the sonics at their peak performance of course).
Good Luck!