05-08-2020, 04:57 PM
???
It is 3100 ohms. This is what you asked, this is what Mike said.
The replacement is any K-type speaker, they all have the same Field coil and voice coil.
You need any Single ended transformer type, from 70 or 90.
The 20 will also work. But I don't think it should be used, though with the transformer changed it is the same speaker.
I just did exactly that, my 570 had a 20 speaker with bad xfmr, and I had a spare xfmr from a 70.
It is 3100 ohms. This is what you asked, this is what Mike said.
The replacement is any K-type speaker, they all have the same Field coil and voice coil.
You need any Single ended transformer type, from 70 or 90.
The 20 will also work. But I don't think it should be used, though with the transformer changed it is the same speaker.
I just did exactly that, my 570 had a 20 speaker with bad xfmr, and I had a spare xfmr from a 70.
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