Yeah BOSE 901's are notoriously difficult to get sounding properly.
My uncle eventually had to get some.. more or less.. pure bass cabinets to give a fuller sound. It was loud, proud and he blew more than a few amplifiers running with the setup. (Mostly because the volume was loud enough to cover an entire city block.)
With BOSE 901's, you need a very specific kind of amplifier, that can output one hell of a lot of wattage to get the proper sound out of 'em.
In my experience with those particular speakers, anyway.
Hope I helped a bit.
I am looking for some advice.
I have just purchased some Bose 901 speakers along with the 901VIE equalizer this is matching in with a Onkyo A9755B amplifier. I have connected them up and I just dont seem to be getting the quality of sound that it should have, it seems to have very little base. I have adjusted the equalizer but this doesnt make any difference which leads me to believe it isnt working. It has power and is connected correctly but even when i turn the equalizer off there is no change in the sound. The instuctions mention to turn the tape button on the amplifier off but there is no tape button there is only a tape selector.
Does any one have any ideas as to why this is happening?
I have inlcuded a link to the amplifier that is in question