No, they haven't been available for years. Drivers for the 600 series were available and were used to repair the 700s. Totally changes the sound. Too bad, the 700SE was a truly great speaker.
What's wrong with your drivers? The butyl surrounds on the woofers will eventually tear. If that's your problem, there are many shops that can replace them, although you may have trouble finding butyl replacements.
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