the first time I use the twin triodes parallel, yes
I think it is more proper to have two cathode resistors, the bias current might not be exactly the same in each tube.
The output transformers are made by a German guy, Ritter, he can make any transformer to your specs, he does a real good job.
The sound is very nice (not as nice as my 6EM7) and there ia a lot of it too so i can drive some more difficult loudspeakers
Bridged amplifier (Single End) lack PSU (Power supply is missing)
Power supply is missing. There are only a diode bridge and filter.
Galvanic isolation input/output. Power up to 8 watts per channel. Full SRPP. Very good sound. Assembled 5 different amplifiers. It is possible to use any output transformer 500/8/4 Ohms. Suitable transformers from Outdoor Sound Column (operating voltage 70/100V)...effective frequency range of 140Hz ~ 14kHz wide
Power supply is missing. There are only a diode bridge and filter.
Galvanic isolation input/output. Power up to 8 watts per channel. Full SRPP. Very good sound. Assembled 5 different amplifiers. It is possible to use any output transformer 500/8/4 Ohms. Suitable transformers from Outdoor Sound Column (operating voltage 70/100V)...effective frequency range of 140Hz ~ 14kHz wide
Attachments
Power supply is missing. There are only a diode bridge and filter.
Galvanic isolation input/output. Power up to 8 watts per channel. Full SRPP. Very good sound. Assembled 5 different amplifiers. It is possible to use any output transformer 500/8/4 Ohms. Suitable transformers from Outdoor Sound Column (operating voltage 70/100V)...effective frequency range of 140Hz ~ 14kHz wide
SRPP Bridge, good idea for use with non exotic transformers. Probably you can get more power from it than 8W. I like the 5 x 5 square chess board of the chassis. The transformers you used for this project doesn't looks like PA adaptors.
I like the whole project.
Low output power of the amplifier drawback of this scheme.Or power or sound quality. PA adaptors: Food anodes through a rectifier from the mains-look closely scheme.
Thanks for a response
DIY turntable and tonearm with built in tube preamp...
Just for fun an all DIY project from HD parts etc.
Mono ceramic crappy cart ...In the presentation video, the audio is recorded from the original Lp on the DIY turntable.
https://www.youtube.com/watch?v=UWP2JG4llsU
Just for fun an all DIY project from HD parts etc.
Mono ceramic crappy cart ...In the presentation video, the audio is recorded from the original Lp on the DIY turntable.
https://www.youtube.com/watch?v=UWP2JG4llsU
Attachments
thank you for interesting!
This is old picture.On top of the stand you can to see pair of 300B Push-pull monos amplifiers and 307A preamp .On the bottom-300B SE amplifiers.
My latest build was a single ended, single stage amp using the 6C45. I used Vishay/Dale RN/CMF/CPF resistors in all spots except for the grid stoppers, which are old non-magnetic Holco H8. Elna Silmic II are used as cathode bypass caps and output transformers are the Transcendar 'budget' models (hand brushed to give a more pleasing appearance).
The sound is incredibly detailed, although not as three-dimensional as my other SET amps. Absolutely no hum or buzz present.
The sound is incredibly detailed, although not as three-dimensional as my other SET amps. Absolutely no hum or buzz present.
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6n1p-ev headphone amp - my first DIY from scratch
Hi all,
This is my first post. I've restored and repaired a few amps in the past, however, this is my first complete build. This amp is from headwize, the Bender design. CRUSHINGLY LOUD! Handle with care.
Came out OK. Detailed sound, even with a slight hum at idle.
Thanks for the inspiration all. Let me know what you think.
Hi all,
This is my first post. I've restored and repaired a few amps in the past, however, this is my first complete build. This amp is from headwize, the Bender design. CRUSHINGLY LOUD! Handle with care.
Came out OK. Detailed sound, even with a slight hum at idle.
Thanks for the inspiration all. Let me know what you think.
Attachments
Member
Joined 2009
Paid Member
Power supply is missing. There are only a diode bridge and filter.
Galvanic isolation input/output. Power up to 8 watts per channel. Full SRPP. Very good sound. Assembled 5 different amplifiers. It is possible to use any output transformer 500/8/4 Ohms. Suitable transformers from Outdoor Sound Column (operating voltage 70/100V)...effective frequency range of 140Hz ~ 14kHz wide
Good work ,congrate...Like!
I'm in Canberra. Where are you?
My next project is a ax84 SEL with a KT88 monster. Looking forward to blasting out some sweet tunes!
