Take the front cover off, check the speaker make sure the cones are good, tap them in different spots to see if they are not disintegrating & check the glue that hold the speaker in place, run your finger around the edge, the part right where the cone meets the "frame" or "mount".
What year are the 901's?
If your not sure do not buy them, some more will pop up on the market.
<span id="INSERTION_MARKER"> In order to pourchase a set of Bose 901 speakers, I need some advice since I do not know anything about them.
I do not have de Equalizer III I would like to know:-Just for checking I connected the speakers to an amp, and the sound at very low volume was terrible, this means the speakers are damaged..? -Is their a way of checking them with a multimeter before pourchasing the set? Thank you very much.