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Yeah, those 2-ohm ribbon speakers are ideal for an OTL

Not.
There is so little energy needed up beyond 10 kHz or so that I don't think the issues are "real" on those grounds. However, whether the amp can tolerate the reactance is another thing. In my experience, solid state amps often cannot. Transformer-coupled tube amps work but sound ho-hum. OTLs make the music on ESLs.

I just don't like any of the full-range ribbons I have heard. They are a bottom-up speaker; the bass is fine and the frequency response seems to roll off gradually from the bass region on up. Now if you have a dedicated "tweeter" ribbon, that can and does work nicely. I've just never felt compelled to make such a radical change.

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