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I will be teaching a physics of sound class in the fall and I would
like to get a good set of speakers/monitors and amp system (has to be
portable). Does anyone have any recommendations? I have a CD that
plays a sine wave starting at about 20Hz and sweeps up to 20,000 Hz
(I ask students to raise their hands when they can't hear it
anymore). I notice the speakers I have don't respond until around 50
Hz - I can't hear anything above about 10k Hz myself so I don't know
if the speakers I have go to 20 kHz or not.