[R-390] 390a audio

[Bernie Nicholson]

I found the simplest solution was to replace the audio transformer in the local channel with a transformer out of a 51J4 [same size and mounting] then rewiring the socket for a 6AQ5  result is plenty of audio 3.5 ohms output as well as 600 , I purchased from Fair radio the transformer very reasonablly and this conversion has been trouble free for quiet a few years now and every one who hears it and knows the reciever wants to know where all the audio is comming from