In terms of frequency response and measurements, this speaker system performs very well. The response averages about 84.5 dB SPL/1w/1m, and is within +/- 1.5 dB except for a slight roll-off above 16k Hz and the midrange diffraction dip. The impedance is very benign, just barely dropping below 8 ohms; pretty much any amplifi er should be able to drive these speakers with ease. I would estimate the system power handling to be about 60 watts based on the excursion limits of the woofer, and at this power the speaker should reach over 100 dB of output.

Overall, I am very happy with the sound of these speakers, they offer full bass, a very clean midrange, and airy highs. I would not say that these are the most detailed or revealing speakers that I have heard; they offer more of a warm and smooth sound. Their flat frequency response is a bit of a double-edged sword though, and while it can make them sound exceptionally good on jazz, classical or other well-recorded music, it tends to make the speakers a little fatiguing on poorly recorded rock or pop music. I would be satisfied with these speakers for my own system, and think they would be great for everyday listening. For a speaker that is this inexpensive and easy-to-build, I don't think you can expect more.