Quote:
Originally Posted by bob91343
A pin drive speaker is, as I recall, a magnetic unit. The horseshoe magnet had an armature that was a thin rod, or pin, that connected to the center of the speaker cone, which was a complete cone down to the tip.
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It also eliminated need for an output xfmr, since the coil was high enough impedance to serve as plate load of the output tube.
I resemble that remark.