At your risk.
Today the bifilar 1:1 output transformer was disconnected from drain and connected to the source. This was done fairly quickly as all connections are done with Wago snap terminal connectors.
Source follwer configuration worked with change with readjustment of bias from the 50K potentiometer in series with 47K but sensitivity was low as there is no voltage gain.
Signal path:
CD - SONY CD Walkman - Pleiades K951 as source follwer - Marantz Imperial 5C
So power suppling the speaker was low.
The amplifier was remodified to drain follower.
Then the output transformer was removed and the AKAI SR H-44 speaker connected directly to drain instead of a load resistor. This should not blow the speaker if drain currect (which now passes through the voice coil) is kept by suitable bias to up to say 300mA. It worked and sounded nice, but less loud than when using the output transformer due to loss of efficiency.
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