Mine was from JL and it makes no difference in the first year as the retailer simply defers to the manufacturer so you're at their mercy. If the manufacturer refuses to replace and wants to repair it then the retailer is very unlikely to override this and replace the set themselves as they won't be able to return it to the manufacturer and will end up out of pocket.
The ridiculous situation is that, if you get two failures in the first six months, you're entitled to a full refund by law. After the first year you're into the retailer's extended warranty and, with someone reputable like JL, you'd likely get better service. Between six months and a year, you're in a no-man's land where you have no legal rights to refund/replacement and the retailer can't really help you if the manufacturer doesn't want to play ball.