Efficient, affordable speakers for SETs?


Ever since I discovered the magic of SETs, I have been hooked and could never go back to “sand amps” or non SET tube amps. (Yes, I know they are dirty and colored but I love the soft clipping!) The seemingly endless problem has been finding speakers that not only function well with just a few watts of power but get the most out of the limited power and also sound real. Tried Lowthers in Medallion enclosures and some other enclosures but ultimately not very natural or satisfying. Realized that a two way speaker properly crossed over to a tweeter was best and found a speaker that was specifically designed to play with 8 300B watts. The Tetra 506s (worth checking out Tetraloudspeakers.com and the great musicians who use them!). Does anyone know other two way speakers designed to work well with SETs?
mglik
You might consider speakers from GR Research (Danny Richie).  Most designs are high sensitivity like 94dB into 8 ohms.  There are DIY kits as well if that's of interest.  Many people build them and sell them to others based on your desired finish specs.

Danny and his team do a bunch of work for other manufacturers as well as clean up designs, crossovers, etc.  Great resource on YouTube as well.

http://gr-research.com/index.aspx
I agree that looking into Tekton is a good idea. It couldn’t hurt to at least call and talk to Eric at Tekton either. 

I’ve got a pair of Pendragons, and at 95 dB efficient, they’re easily driven by any amp I’ve tried with them and they sound great. 
I’ve owned Vandersteen 1B speakers for a long time.They are easy to drive and have a 6 ohm impedance.You can find them used for not a lot.Great sound and have been made since the 70’s