Originally Posted by 2k.civic.si

some subs need it....some subs are broken in at the factory....most the subs you guys buy are made in china garbage and it wont make any difference. rockford fosgate for example used to make all their subs in the factory in arizona...they do not anymore....they are chinese junk....kicker used to make their subs in house....now made in china.....there is very few companies who make a decent sq sub that actually need breakin anymore and usually they get broken in anyway at the factory during testing before shipment.