Just reading through all the comments about the right amp for these speakers. I am not anti tube at all, I've owned tubes in an amp, preamp, cd player and a buffer in the past. I've built more speakers than I care to count. What bothers me is that these speakers are 4 ohm and 86db sensitivity. I cannot find curves anywhere to give proper advice. Has anyone out there seen impedance and phasing angle curves?
Being labeled 4 ohms, it is possible, even probable that at some frequency that these speakers drop in 3 ohm range or less. Then if phase angles drop much, you can have real problems.
Puppyt, if you are considering purchasing tubes to use on the Dyn's, I highly recommend listening to the amp on your speakers first. Not too many tubed amps .... at least that are affordable, will drive low impedance loads with tough phase angles.... So, if you can confirm phase angles are not bad and/or your speakers are a fairly consistent 4 ohm load or higher then, you should be fine with a tubed amp, If not, in my opinion, its not worth the risk..... unless, you find a great buy on tubes that you know that you can resell without a huge loss...
Just my 2 cents, Tim