You may want to take a look at my FritzSpeakers Carbon 7SE model which are below your budget. With the smooth series crossovers they are very easy to drive even with low powered tube amps. Conventional crossover impedance curves usually look like a
mountain range with large peaks and valleys. With a tube amp, this will
result in an uneven frequency response with bumps and suck-outs due to
the fact that tube amps will deliver more power to the frequencies with
the higher impedance peaks.
http://fritzspeakers.com/Images/speakers/Carbon7SEimpedancePhaseGraph900.jpg
fritzspeakers.com/DreamWeaverFritzImpedancePage.asp
Disclaimer- I'm Fritz, the builder of FritzSpeakers
http://fritzspeakers.com/Images/speakers/Carbon7SEimpedancePhaseGraph900.jpg
fritzspeakers.com/DreamWeaverFritzImpedancePage.asp
Disclaimer- I'm Fritz, the builder of FritzSpeakers