Mark (Boogie) bought them new and had them for a little less than a year if i remember correctly, i have had them for a little over 6 months But used them very little due to the fact that i set up the 75g then had to break it down.
Not sure but i think i could have done it with my old Acjr, i know i could adjust the power output settings on the Acjr but what do i know( absolutly nothing about LED's!!)