Subwoofer Advice

@navyachts That is quite the combo, Alice in Chains and Herb Albert. The Grunge seems to be serious bad luck. There were suicides in all three bands. Probably a good thing to stick with Herb Albert. You should try Fourplay, Bob James band, Smooth Jazz at it's best. 

@big_greg Turn up the volume on your SVS subs with a bass heavy number and put your hand on the subwoofer. That vibration you feel is distortion you are hearing. Using two opposing drivers to cancel out Newtonian forces is one way to limit that vibration you feel. With proper enclosure construction and balanced force design you can create a subwoofer that does not vibrate at all excepting for the driver's cone  https://imgur.com/gallery/building-resonance-free-subwoofers-dOTF3cS

Just realized you have the Coda No.8

I had the V1 version of that amplifier.

FWIW, my Yamaha A-S2100 provides more grunt in the lowest octave of bass. IDK how it does so but it does. 

@mijostyn Love Fourplay and Bob James, who occasionally comes to town. I always wanted to see Chuck Leob, but with his passing, I won't be seeing him or Fourplay any time soon. 

@helomech Me too, V1.

I took my wife on a speaker demo tour for our 10th anniversary (yes, she is an awesome sport!) here around the Pacific Northwest and listened to numerous pairs of speakers and narrowed it down to Kef R11s and Legacy Signature SEs. I had both at my house and returned/sold them.

Having had Martin Logan ESLs in the past, I stuck my neck out and purchased the 13As unheard although I listen to a pair of the 11As on the anniversary tour and didn't like them at all, but kept my fingers crossed on the 13As. So, after all that, I don't think I'll be changing speakers anytime soon, although I would love to hear the Yamaha's NS-5000's, but nothing local, as usual. 

Better doesn't always mean more expensive. I would ask a dealer and the check reviews of the speaker not the amp to see what amps seem to work...

@sounds_real_audio ok, thanks