Model 650 Tone Control Question
Posts: 182
Threads: 8
Joined: Apr 2023
City: Roanoke
State, Province, Country: Virginia
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/
Messages In This Thread
RE: Model 650 Tone Control Question - by DaleHCook - 07-09-2023, 10:16 AM
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