Bose 901 VI Main / Stereo Speaker

If you don't care about high fidelity sound, the full spectrum, but only the midrange, buy these speakers. Otherwise you should keep looking. There are better choices out there than these even if you think they are cheap. You will need the equalizer, which most sellers do not sell with the speakers.
Think about it. Speakers designers have been making speakers for 50 years with two or more sizes of drivers(speakers) for a reason: to give you the full spectrum of sound regardless of the amp or equalizer, or lack of one. They put them in their speakers because it is necessary, not because it looks good.
Many decent bookshelf speakers will reproduce sound with more fullness and fidelity than the Bose 901s.

I put up with a friend for some 5 years, who has a tin ear, that used to own the 901s. He finally got convinced to sell them, and he's glad he did. He got enough from them to buy the better part of a very nice sounding Paradigm floor speakers. Even he can tell the difference.

Listen carefully to the 901s before you buy. Don't let the seller turn the volume way up masking the inability of these speakers to give clear highs and definition in the bass notes. Better yet, if you can hear them beside a pair of speakers costing about the same, you'll hear what I and so many others are talking about regarding these 901s. And bring your own music, what you are used to hearing. You know what it should sound like.

The only thing the 901s do well is loud.

And not much else.