Patzig that is interesting, I have a yamaha rx-z11(probably comparable to your receiver) and i can tell you i was not impressed with the clearwaves, my tritrix build was louder and cleaner. I reached out to Jed and he said a receiver would start to clip before they could ever be driven. So I put a parasound hca-1000a mono on each tower (because I already had the amps lying around) which was 400 @ 8ohm per speaker. I did this out of curiosity because I was ready to throw them in the garbage. I will tell you it was night and day difference. I could play tracks like Elton John Rocketman and these speakers had so much output that was clean and dynamic it was pretty impressive to me. Mariah Careys voice could penetrate you. And when i played high res stuff like dts concert stuff, amazing........So since you own the clearwaves you owe it to yourself to put some serious amplification on them and take another listen, not to compete with waveguide stuff but just to see for yourself because i think you were selling yourself short with a receiver driving them.
So hear i am at a crossroad myself, buy some nice mono amps for my clearwaves or build something like the 1899? I dont want to spend a fortune on amps if I don't have to. I've been reading and reading lately. I came across your comparison and I was almost sold till I found out you ran them with a receiver. I wish I lived close I would love to hear them! Do you have any pics of your clearwave build? Thanks for your time, I'm not trying to be bossy or anything like that, I guess I'm just as excited about this DIY stuff as anyone out there!!