printed circuits for the realization of the Hiraga le monstre amplifier, designed for assembly with modern transistors that are easy to find
https://www.ebay.it/itm/363885006897
https://www.ebay.it/itm/363885006897
I trying build hiraga 8w low budget
unsuccessful with my transistor BL and B version
K170/J74-BL input
BC550/BC560-B hFe 200/180
BD140/BD139 driver hFe 50.0/50.0
Output Tip41/42-C
😭
I read and followed hiraga it maybe because I chose the wrong transistor version!
https://www.diyaudio.com/community/threads/hiraga-le-monstre.5462/post-1549714
Schematic below 👇 people successful with Transistor input GR and driver C people said important transistor input and Driver match
Original transistor hFe
Input SK170/SJ74-Y
SC1775/SA782-E• hFe 563/432
SB716/SD756• hFe 312/368
output SD844/SB755
unsuccessful with my transistor BL and B version
K170/J74-BL input
BC550/BC560-B hFe 200/180
BD140/BD139 driver hFe 50.0/50.0
Output Tip41/42-C
😭
I read and followed hiraga it maybe because I chose the wrong transistor version!
https://www.diyaudio.com/community/threads/hiraga-le-monstre.5462/post-1549714
Schematic below 👇 people successful with Transistor input GR and driver C people said important transistor input and Driver match
Original transistor hFe
Input SK170/SJ74-Y
SC1775/SA782-E• hFe 563/432
SB716/SD756• hFe 312/368
output SD844/SB755
Last edited: