Phil, the speakers will fit within the stereo stand, on the bottom shelf, on the left and right sides. It's not the best for stereo separation, but it will look the best. That is the way the stereo stand was designed originally to be used.
The maximum available space for each speaker is 27" high by 14" deep by 15" wide.
In the middle, on the bottom is space meant for albums. Above that there is a glass shelf where I'll put my Pioneer cassette deck. On the top is where the receiver and turntable go. I also have a couple of small Sony color TVs from that time period, and I should have room for at least one of them on top of the stand.