Subs?

Had two JL audio Fathom V2 subs that cost me $10,000 USD. I did not heed advice on here to avoid at all costs. One was broken on arrival and the other sounded terrible despite professional integration with REW, miniDSP etc. Martin Logan’s at 1/3 the price have been flawless. Like others said, friends don’t let friends buy JL. 

Deep Subject...Well I started with two SVS SB10's for higher end tube amp stereo listening.....And as with anyone into music playback one day after owning your equipment you want to hear more detail from it.....But cost and your room space play another big part on what you can afford and room acoustic of course in end of what best sound you can achieve with your equipment..Moving all speakers few degrees or location of Subwoofer,, It does not stop..But after 5 years with SB10's and smaller tube amp I decided to go bigger tube amp and Sub to SVS SB16 and talking to SVS was going to go with smaller subs vs one big SB16..But my living room was tough placing two subs and wiring them .. Do two subs sound better yes they do ..If you have the room and placement for them  only.. I went with one SB16 and 95% I am happy with it..It sound more natural with my listening then dual SB 10's I had..And I guess no matter what you have or listen to you always in your mind think it could sound better ...I think some days mood plays a big part of what you hear than other days...And way songs are recorded plays big part of how song sounds .. And with tube amp I do not have adjustment to change bass or tremble with knob so some songs I need to roll tubes with some songs ..But what I hear from my single SB16 makes me happy over my Dual SB10's..Only your ears can tell you what you need to make you happy..If you have the room and money buy duals if not buy largest Sub and be content...You do learn to listen to what you have and hopefully you chose the right Amp,Speakers,DAC,&Sub..I found speaker stands changed my sound the most out of everything I have done..

I have 2 set of JLAudio E110, and 1 set of JLAudio E112 in three systems, the build quality and sound is excellent.  My fourth system I has a set of HSU ULS-15 MK2 and they are excellent.

@goducks44 Great topic and qood question.  

I would strongly favor getting two subs over one sub.  If you have room to place the subs outside of your lovely B&Ws it will stretch the sound stage and you will very pleased. 

I have a room, slightly smaller than yours  at 13 x 16 feet.  I started with one JL audio F112v2 and got very good results.  When the budget allowed I added a second matching sub and the overall improvement of adding the second sub was more than 2x just the single sub.

I'm aware that JL has had some reliability issues but my understanding is that it was more with their entry level subs not the Fathom line.  I have two SVS subs in my HT room and I've had issues with both SVSs that had to be warrantied.  My JLs have been fine.  

As far as sub size goes, either the 12" or 13" will work in your room.  I don't think that you will miss anything using the F112v2s.  I measured my room and the 112s are playing full volume down to 10hz (yes I was shocked too).  the 13" subs will move a little more air.

One final thought, I upgraded the JL footers to the Gaia feet and the bass tightened up a lot and it was a very worthwhile investment. I have wood floors.  

Good luck and cheeers.

@goducks44 

I replaced my KEF Reference 5’s, with Sonus Farber, Amati G5’s and now I rarely use my 12” subwoofer anymore. I also have a set of Acoustat Model X’s, that can  blast me out of the room with 40 watt amps. Having said that, they really need a subwoofer or two at lower sound levels.

Have you ever thought about getting a pair of Planar headphones?

All the best.