07-09-2023, 09:16 AM
MrFixr55 Wrote:The issue is the speaker voice coil impedance. the resistance is 1.1 Ohm. If the impedance is 4 or 8 Ohm, then a transformer will be easy to find. If the impedance is much less than 3 Ohms, it may get interesting.
That is indeed the issue. Measuring voice coil impedance is not a simple matter. Even with the classic instrument used for the purpose (General Radio Type 1603-A Z-Y Bridge) the resulting Smith chart is not easily interpreted.
Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
https://plymouthcolony.net/starcity/radios/