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.
Thanks
kyle
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"Naturally the common people don't want war. But they can always be brought to the bidding of their leaders. Tell them they are being attacked and denounce the pacifists for lack of patriotism and endangering the country. It works the same in every country."
Herman Goering - Hitler's Reichsmarschall