Can we start a thread for folks who run a SET amp with a subwoofer or two?

I moved down a pathway that was an offshoot from the mainstream of this hobby-a single end triode 300b amp.  So what I got with a SET was more than I gave up.  But bass lacking can be tough to live with. A brought in a couple of subs that took CONSIDERABLE tuning experiments, measurements, and ultimately following my ear.  

Who has experimented or uses a subwoofer or sub bass condiment with a low powered SET amp? 
PS I wish Elekit would make 300B monoblocks. I'd buy and build them right away.  

You have a very nice system. Thanks for sharing! 

IMO, no tube amp or speaker can come close to pressurize a room with low bass the way a subwoofer is capable of.
I have a set of Classic Audio Loudspeakers model T-3s. They employ two 15" woofers, one of which has a 22Hz free air resonance. They have no problems pressurizing a room with low bass without a sub. System efficiency is 98db and impedance is 16 ohms.
“a set of Classic Audio Loudspeakers model T-3s” 

And they are powered by? Amp specs please? 
I built Bottlehead 2A3's, Madisound BK-16's with Fostex drivers, super tweeters and added a Mirage SA-8 sub.  The sub makes it a party system.  Just add beer.