Yes,...Yes,..I am beginning to think it is unloaded. As any high-end preamp should be
High-End preamplifier with 12AX7!
Zemo! (Helo All!)
Veruvaj mi ovoj predzasiluvac odlicno sviri,....(bidejki semata e profesionalna ovdeka nemozam da ja prikazam,... najdigo EMITER,...vo nego cel proekt e opisan!)
You're right, the purpose of this amplifier is the oboe sound of even harmonics!
This is the real thing, never boring to listen to, ... but very nice tone (Mouns-Fletcher) so they say, and I also say!
Check and see if I was right ...
Best Regards,
Zemo! (Helo All!)
Veruvaj mi ovoj predzasiluvac odlicno sviri,....(bidejki semata e profesionalna ovdeka nemozam da ja prikazam,... najdigo EMITER,...vo nego cel proekt e opisan!)
You're right, the purpose of this amplifier is the oboe sound of even harmonics!
This is the real thing, never boring to listen to, ... but very nice tone (Mouns-Fletcher) so they say, and I also say!
Check and see if I was right ...
Best Regards,
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What's not nice about the 6DJ8 ?
smaller than 6SN7, higher gm (~13 for the 6DJ8 compared to ~2.5 for the 6SN7 means about 5 times lower output resistance for a 6DJ8 cathode follower !!) and more linear, especially at lower voltages.
All tubes which are in production again are "nice", especially the 6DJ8, as pointed out above
regards
smaller than 6SN7, higher gm (~13 for the 6DJ8 compared to ~2.5 for the 6SN7 means about 5 times lower output resistance for a 6DJ8 cathode follower !!) and more linear, especially at lower voltages.
All tubes which are in production again are "nice", especially the 6DJ8, as pointed out above
regards
Hello!
I need good sheme (circuit) or project for "High End preamplifier with 6DJ8 (ECC88)"!
If someone has a scheme or project prayed that I would present here.
Thenks
I used ECC88 in the Heretical preamplifier (on my website) and the ImPasse (in AudioXpress). Neither of those will give you "tube sound" as such, but rather are designed to accurately replicate the input signal.
6DJ8
I couldn't find any trace of preamp on above schematic!!!!
Probably, preamp is used to elevate signal level from Tuner or Tape (entree 5) level (order of 300 - 500 mV) (yes, some people still use them on their own satisfaction) to standard sensitivity of power amp (entree ampli)?! Once, such level was of order of 1 to 1,5 Volt. It is usually the same today. Only some manufacturers make and sale power amps with volume control and input selector as "integrated" amps (and they are far from be integrated).
Just one question! What gain should have phono preamp to correctly drive power amp if used with low output MC cartridge and without line level amp??
More than 5000 ?? Whether there is such an amplifier??
Yes, some people still need line level preamp.
6DJ8 (or 6SN7/6CG7) makes good pream used as SRPP or Totem Pole. Just google Bartolomeo Aloia and check his "Preampl. zero feedback" (known also as PST200 when firstly published in 1986). Than make one and spend less time on internet and much more listening your favorite music.
On this aspect, this one is the best of the know (and unknow) worlds
I couldn't find any trace of preamp on above schematic!!!!
Probably, preamp is used to elevate signal level from Tuner or Tape (entree 5) level (order of 300 - 500 mV) (yes, some people still use them on their own satisfaction) to standard sensitivity of power amp (entree ampli)?! Once, such level was of order of 1 to 1,5 Volt. It is usually the same today. Only some manufacturers make and sale power amps with volume control and input selector as "integrated" amps (and they are far from be integrated).
Just one question! What gain should have phono preamp to correctly drive power amp if used with low output MC cartridge and without line level amp??
More than 5000 ?? Whether there is such an amplifier??
Yes, some people still need line level preamp.
6DJ8 (or 6SN7/6CG7) makes good pream used as SRPP or Totem Pole. Just google Bartolomeo Aloia and check his "Preampl. zero feedback" (known also as PST200 when firstly published in 1986). Than make one and spend less time on internet and much more listening your favorite music.
Read "His Master's Noise" on this site's articles section for the analysis of that question. It's pretty straightforward to set the RIAA amp gain to give a nominal 2V output (in line with every other modern source).
I took just a brief look! Can we speak about a phono preamp with step-up transformer (device)?? That approach is also well known to me! We can also use semiconductor head amp in (conjunction with ) tube phono preamp (trick used in VAIC tube phono preamp) and still call it tube preamp for low level MC cartridge, as they do! I would like to see phono preamp, either solid state or tube, with mentioned gain! In any case, you still will be short with signal level to drive your power amp from tuner or tape recorder, as I am with my Nakamichi or QUAD FM4! They couldn't drive my power amp directly and they are not any exemptions among tuners or tape decks! Unfortunately, I don't own a fortune to buy a Partridge transformer! Can suppose the same for Macedonian guy who started the thread, so why we just don't encourage and help him to build his line level amp???
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