I use a LF1 for my two channel system. I have an EP 600 for the HT, but I used to have a 500. I did a little “test” between the 500 and the LF1 one day when I received the 500 from FedX. The test was nothing scientific or even educated for that matter. I plopped the 500 down where the LF 1 was and give it a listen. The LF1 is a great sub and does just fine as far as subs go, but it just can’t compete against the EP’s. The 500 is so much more sub it’s an unfair fight between the two. I don’t even think two of them would outdo one EP500.
"......The wisdom of life consists in the elimination of nonessentials." ~ Lin Yutang