Yamaha Ns-15 Studio Monitor Keyboard

This is a very rare Yamaha speaker built with very unusual woofers.  These are open back speakers that have been tested, and one works, one has a blown woofer with infinite resistance on the voice coil.  The tweeters do produce sound on both.
Speakers are 8 ohm, with adjustable tweeters.  The crossover is fairly complex with a choke coil for both woofer and tweeters.  I have not tested the capacitors, so replacement may be required based on your evaluation.
I have taken photos that show the most significant flaws I could find.
The dimensions are roughly 24 x 16 x 7.
While doing some research on these, I found some information suggesting these or perhaps just the drivers were designed for use with Yamaha organs or keyboards.
I pondered removing the cast woofer frames and replacing with a birch baffle board where a pair of 12" speakers could be used instead, but I really cannot find the time for this project, and I have probably enough speakers already!
I have packaged the speakers carefully and they are ready to ship.  You see last two photos show how the speakers are padded.  One more layer of cardboard has been carefully wrapped around what you see in the last photo and I feel fairly confident that the speakers will arrive in good shape even if the package takes a bit of a beating along the way.
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Returns Accepted for this item if it's within 30 Days