Hi everyone , I am here after reading many many hours long different posts, that helped me in various repairs (or improvements) !
The last one to date is an improvement on the THD of Rotel RA 840 BX 4 , made after the repair led to one channel being hotter than the other, which I found out to be a common trait of Rotel’s from that age …
That led me to Ange’s post with a schematic to improve the RA 820 THD ,
https://www.diyaudio.com/community/...l-amp-thd-by-20db.275171/page-57#post-7846182 ,
which in turn led to my video
I made another one on the repair that I will soon post, where I highlight somewhat why some of this amps fail due to heat… Ange’s cure reduces that greatly😊
Looking forward lots of other mods and repairs.
Cheerios
Eric
Ps: I will soon share my repair findings on Alesis powered MKII that I couldn’t find on internet, but that are now repaired, I fixed the power supply and publish also some minor improvements to the amplifier section of that twin amp 😊
The last one to date is an improvement on the THD of Rotel RA 840 BX 4 , made after the repair led to one channel being hotter than the other, which I found out to be a common trait of Rotel’s from that age …
That led me to Ange’s post with a schematic to improve the RA 820 THD ,
https://www.diyaudio.com/community/...l-amp-thd-by-20db.275171/page-57#post-7846182 ,
which in turn led to my video
I made another one on the repair that I will soon post, where I highlight somewhat why some of this amps fail due to heat… Ange’s cure reduces that greatly😊
Looking forward lots of other mods and repairs.
Cheerios
Eric
Ps: I will soon share my repair findings on Alesis powered MKII that I couldn’t find on internet, but that are now repaired, I fixed the power supply and publish also some minor improvements to the amplifier section of that twin amp 😊
