Dear Dark Horse, ( hi, destroyer X )
Congratulations ...
Here is Little brother fully functional schematic...
Please note output transformers are compulsory if you want to avoid offset...
Sound is gorgeous with high sensibility loudspeakers ( 96 db 1W 1m, at least )...
Ps : AD 161 can be swapped for 2N326 or 2N1218...
Regards from FRANCE
Rock
Congratulations ...
Here is Little brother fully functional schematic...
Please note output transformers are compulsory if you want to avoid offset...
Sound is gorgeous with high sensibility loudspeakers ( 96 db 1W 1m, at least )...
Ps : AD 161 can be swapped for 2N326 or 2N1218...
Regards from FRANCE
Rock
Member
Joined 2009
Paid Member
ROCKMANDRAKE said:
Thank you,Mr. Rock!
Is you Lead me to the germanium way...haha...
I using Fostex loudspeaker unit,model NO. is FE126E 93dB...
as you say so:it Sound gorgeously...
because using Z11 high quality EI sheet...so the efficiency above 35%...without global NFB makes germanium's characteristic showed nudity...I love this circuit topology.
enjoy it!
regards from china
winco
Here is one i have made to have fun
Using 220V - 100 watts ligth bulb as load (34.5 to 45 ohms) i have made this toy to have fun.
Power is very low... THD is also very low...sound is fine.... quality is high, this one is not too much mufled as transistor is having very high current.... the ligth bulb will dissipate 35 watts of heat...efficiency is bellow 4 percent to have a clean sound with low distortion.... a nice stone aged amplifiers ...because waste a lot of energy without produce power.... a really bad design this one i have made...but serves to have fun during a rainy weekend.
A very low power you gonna have...but enougth to drive almost all kind of speakers.... audio frequency response goes to deep bass and very high frequencies..the unit is flat.
Transistor will also dissipate enormous heat.... 35 watts is a lot of heat and the transistor operates very hot..use enormous heatsink if you are not living in Siberia.
enjoy...nothing special...just a toy...this one having something about Rock Mandrake style of amplifier....lovely units those ones.
A real DIY amplifier.... sounds very good...cost is low.
Supply, to have 70 volts, can be picked from the plus 35 and minus 35 supplies you have around..the ones used normally to the biggest majority of 50 watts amplifiers we have into our forum.
regards,
Carlos
Using 220V - 100 watts ligth bulb as load (34.5 to 45 ohms) i have made this toy to have fun.
Power is very low... THD is also very low...sound is fine.... quality is high, this one is not too much mufled as transistor is having very high current.... the ligth bulb will dissipate 35 watts of heat...efficiency is bellow 4 percent to have a clean sound with low distortion.... a nice stone aged amplifiers ...because waste a lot of energy without produce power.... a really bad design this one i have made...but serves to have fun during a rainy weekend.
A very low power you gonna have...but enougth to drive almost all kind of speakers.... audio frequency response goes to deep bass and very high frequencies..the unit is flat.
Transistor will also dissipate enormous heat.... 35 watts is a lot of heat and the transistor operates very hot..use enormous heatsink if you are not living in Siberia.
enjoy...nothing special...just a toy...this one having something about Rock Mandrake style of amplifier....lovely units those ones.
A real DIY amplifier.... sounds very good...cost is low.
Supply, to have 70 volts, can be picked from the plus 35 and minus 35 supplies you have around..the ones used normally to the biggest majority of 50 watts amplifiers we have into our forum.
regards,
Carlos
Into the highest DIY spirit during rainy weekends
You can use a 220V lamp as a load.... a real fun as lamp ligths yellow and variates it's glow.
Call you children..they will be very impressed.
Lovely toy.
regards,
Carlos
You can use a 220V lamp as a load.... a real fun as lamp ligths yellow and variates it's glow.
Call you children..they will be very impressed.
Lovely toy.
regards,
Carlos
An externally hosted image should be here but it was not working when we last tested it.
And the schematics...
the original thread was here...
http://www.diyaudio.rs/topic/353-germanium-se-amplifier/
regards,
Bane
the original thread was here...
http://www.diyaudio.rs/topic/353-germanium-se-amplifier/
regards,
Bane
this is the link, transistors are not 1t813b, but contact the seller...I think I bought from him
just ask him for GT813V
http://global.ebay.com/GT806B_Germanium_PNP_Power_transistor_USSR_Lot_of_10/310147760397/item
ragards B
just ask him for GT813V
http://global.ebay.com/GT806B_Germanium_PNP_Power_transistor_USSR_Lot_of_10/310147760397/item
ragards B
AD161/162 Z3
Hello sir, I like classical music very much. I really like the sound of germanium, can you send me a pair of 2 matched pairs (siemens AD161/162 Z3*) and 2 ac153K (siemens )? Email: 1210536522@qq.com
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