REL vs JL AUDIO

For best sound with a sub you want to use a highpass. It can be in the preamp (most two channel preamps don’t have one) or external. 

 The JL “E” line of subs has a highpass built in but no EQ built in. The Fathom line does not include a highpass and you need an external one but has built in room correction. 

Without room correction you will have dips and peaks in the bass. 

With that being see I have two E112 subs that have both broken twice and need repaired. While JL did fix them once for free under warranty and once at my cost (pretty cheap to fix honesty) I can’t recommend them as a brand. But they sound great for music. 

I believe the REL is either/ or.

I've owned both....dual JL Audio F110 v2 with CR1; JL Audio F112 v2, dual REL Carbon Limited, and I currently own dual REL G1 mkII subwoofers. I submit like most things in this hobby it comes down to personal preference.

Rel ,imo...jl subs have too much reliability issues.