Go to Radio shack and buy a sound level meter 35.00 or so. Then you can tell how many dbs the speaker is up or down at any Hz. using the meter and test CD.. This meter is very useful in speaker set up and this kind of testing, as you can tell where the various peaks and dips in it response are.. J. O.
Testing Bass Extension on Speakers
I have Stereophile's Test CD One. On this CD they have warble tones at different Hz. 1kHz, 200Hz, 160, 125, 100, 80, 63, 50, 40, 31.5, 25 and 20Hz. There has been discussion about the low bass in speakers. Am I right in that if your speakers cannot reproduce any of the levels, this would give you an idea of how low they will go? I set my system listening level to a level lower than what I would play if sitting and listening, but not to low. My speaker reproduced all the way to the 25Hz, when it went to 20Hz I couldn't hear it. I cranked up the volume and could faintly hear it but I was way into the amp.