Seems the last chapter in this Sony 5K Tamradio cooked output transformer tear down .
3P/2S sections layering .
The 8 ohm secondaries are not multifilar wound , which would account for the HF roll off at 18kHz according to the Sony manual.
IMHO what are most likely Permalloy core's account for the lifelike sound qualities of these little units rather that anything particularly special about the winding technique of Tamradio / Tamura here .
As I have a few of these , am looking to rewind a pair with 4P/5S sections with no 600 ohm tap , mutlifilar this time .
Will also look to blend the original cores 50/50 with M6 Silicon steel to get better bass response .
If you were looking for a 5K full range transformer Lundahl do an excellent one
https://www.lundahltransformers.com/wp-content/uploads/datasheets/1663.pdf
3P/2S sections layering .
The 8 ohm secondaries are not multifilar wound , which would account for the HF roll off at 18kHz according to the Sony manual.
IMHO what are most likely Permalloy core's account for the lifelike sound qualities of these little units rather that anything particularly special about the winding technique of Tamradio / Tamura here .
As I have a few of these , am looking to rewind a pair with 4P/5S sections with no 600 ohm tap , mutlifilar this time .
Will also look to blend the original cores 50/50 with M6 Silicon steel to get better bass response .
If you were looking for a 5K full range transformer Lundahl do an excellent one
https://www.lundahltransformers.com/wp-content/uploads/datasheets/1663.pdf
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