01-12-2014, 07:39 PM
Bill, I think you are confusing the Williamson circuit with the ultra-linear circuitry that came along later. The Williamson circuit is essentially what the 41-290 is. Its screen grids are fed direct from bypassed B+ rather than taps on a center tapped primary. Ultra-linear screen grid tapped transformers are usually much higher priced transformers. The 41-190 was a way of getting more audio power output without the extra phase inverter/driver stage. As Codefox says it would not win accolades as to distortion however and if that top output tube quits the sound goes completely or becomes very distorted if the top tube gets very distorted.
As Codefox mentioned these radios were not high fidelity receivers and the speakers available at that time were not noted for great frequency response or fidelity either. They did have one plus going for them in that many included a hum-bucking winding that minimized hum from the power supply.
Joe
As Codefox mentioned these radios were not high fidelity receivers and the speakers available at that time were not noted for great frequency response or fidelity either. They did have one plus going for them in that many included a hum-bucking winding that minimized hum from the power supply.
Joe
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