Which Sub. Rel B-1 or Fathom F-113

I must add to the statement of "no port noise"! You're kidding right? I got my Stentor III to get the port to chuff a couple of times. Not excessively but it still did it. The big advantage the JL has over the REL is the built in ARO to adjust in your room. I shouldn't even bring up the fact that my REL Stentor blew a resistor in it's amp(known problem)that Sumiko initially tried to blame on my Levinson 335 amp,WTF?

I just ordered a JL Fathom F-113 sub.
I own Eggleston Works Andra 2 speakers and Pass Labs Amp and Preamp.

I have moved the Andra's out in the room where I get much better sound stage, but the low bass has suffered.

I do not like the idea of adding more electronics and cables using electronic crossovers.
So, I am planning to use the Andras full range and the JL F-113 to fill in the bottom.

Can the JL's be used successfully in this fashion or do I need an electronic crossover?

Ozzy...I run my X-2 series ll's full range and use my two Gotham's to fill in the bottom. Depending on the input impedance of your amps you might need a tube buffer or something similar as you will be running two loads in parallel. Here is how I solved the problem in my system

http://forum.audiogon.com/cgi-bin/fr.pl?vaslt&1049587927&openflup&584&4#584

Thanks, My Pass Labs Preamp (XP-10) has 2 sets of outputs.
So, will that still be a problem?

My Ref 3 also has 2 sets (4 in all)....two balanced and two SE, so it will be no problem