I couldnt find anywhere else the specific time of how long or how to properly break in subwoofers. I broke in my first pair of 12's without knowing it. Now i need to know how long to run them at what volume with how much gain before i can bump again. I have 2 12 alpine type e's. ya you may laugh but these things were the best investment i made for my car stereo. I got them cheap brand new when good guys were closing out and when i got it installed (not knowing anything about car stereos) i had it powered by a 4 channel! so of course they were WAY underpowered and did not sound very good at all. they were very quiet! Until i finally got a mono block amp about a year later. THEN i realized the potential of my subs. then i moved to 2 seperate monoblocks to power them. the alpine mrp m 500's to each sub. with the hopes of buying the type r's. I do not know why people hate on alpines. i have had friends that say. i have gone through 16 pairs of subwoofers while you have still had yours. I have now had my subwoofers almost 4 1/2 years! they havnt ever sounded better than they do now. i ordered the type r's and want to know how to break them in PROPERLY so i can get the long lasting pleasure of my subs. so how do i properly break in 2 12 alpine type r's....... and if it makes any difference my friend just got 2 8" kicker L7's for his single cab truck. how long should he break his in?!