Best sub for music,

For once, I actually agree with millercarbon.  My subs are positioned to be and time aligned with my mains.  However, as I often state, THERE IS NO "BEST" anything.  It is all way too subjective.

I repeat:  There is no best anything. There is no best car, quarterback, tennis player, nor especially, no best speaker or amp.

18 inch Bag End Infrasub.
I have 2 up front in a hometheatre/ stereo setting and a Mirage BPS 400.
I wouldnt change this setup for anything...ever!

Hi All,

First time poster here.  Thanks to the OP for the discussion topic.  

I've also been contemplating sub(s) for my 2 channel setup.  There is many that say 2 subs is the best way to go.  Can someone explain this philosophy a bit more (simple terms preferred)?  I have a small-ish music room (13 x 11 1/2).  The REL T/5x is my target but my mind is telling me that 2 subs in this room is going to be A LOT of sub.  Is the dual sub more for balancing both channels to have depth added vs lopsided if only 1 sub?  Again, 2 subs in this room seems overkill but I may not be taking into account more than volume (in room measurement and SPL).

As a listener's room size goes up would a person simply scale up the size of the subs to the larger T/7x, T9x or the S series?  Is there a 2 channel music scenario where adding 1 sub makes sense Vs. 2 subs?

My humble setup includes - AVA CF Pre, Odyssey Stratos Stereo PA, B&W CM9s, Schitt Bifrost MB, Vintage Sony DD Turntable, Denon DL-110 cart, Moon 110LP Phono

Thanks in advance for any responses. 
-Sam

mijostyn - Thank you for the warm welcome.  I agree, pro sound / commercial amps may be all you need for subs.  I have used QSC amps for decades and they are very solid performers.  As well, a decent Crown professional amp isn't too expensive and will drive (home) subs with the good damping factors found in those amps.  Your assessment of 1,000 watts of A/B power with high damping factor for subs is spot on. 

Side Note:  The JBL SDA-2200 amplifier is the identical twin to the Arcam PA-240.  Somewhat clinical sounding in audio reproduction, but very, very accurate and controlling of the driver.  Plenty of power too for in the home and the ability to bridge the amp for mono use is helpful in my situation.

ditusa - The B460's are fantastic.  Great sounding and looking sub for home use.  What do you use for power on them?

I've played my system for two audiophile friends that have great, reference systems for the first time after I had it complete this spring.  The look on their face when they hear subs at this level (not just volume, but sound quality) is priceless.  It's just a whole different experience when that area below 50 hertz is fully realized by a decent driver designed specifically for that frequency range with good power behind it (and crossed over correctly).  I'm not saying my system is excellent or of audiophile quality (though I do highly recommend the 4349's)...it's just very enjoyable (to me) and has made me want to listen to music much more now than I had in the past 15 years.  I'm also lucky I have a large enough room to enjoy it in and my wife couldn't care less about how many big, ugly boxes I stack up in the living room.  I'm fortunate she enjoys the new system too.  

I have noticed a large shift in music production recently where it's obvious the music is being mixed and mastered on studio monitors with extended low frequency reproduction and with instruments with the computing power to get down low.  Where as you used to have listen to pipe organ music 30 years ago to get into really deep frequencies, standard pop tracks are reaching way down into the 40's and 30's (or maybe lower at times).  [Grab some rock albums from the late '70's or early '80's and you wonder if they mixed it on anything but Yamaha NS-10's.  Is the kick drum and bass guitar really in the mix...?]   Another argument for adding subs to your two channel system.  D_mn, I'm having fun with the mess of junk I have in my living room.

Great discussion, and again, thank you for letting me add to it.