"Bill M" wrote in message
...
Regular old-time "2k" phones ohm out pretty close to 2k in DC resistance
and their impedance is in that same ballpark. They are all over the place
nowadays . May be fine on a regen set but suck horribly on a crystal set.

Hmm... so a crystal radio would effectively perform better using a 1k--8 ohm
audio transfer than just using the "traditional" crystal earphones?

Are crystal earphones called that because they're used with crystal radios, or
because they really do have some sort of crystal in them (seems unlikely)?

---Joel