Perfect. One mistake middle of the road but Merlin kept walking as always until happy end.
-Barca 2-2 today? Real Madrid benefits?
-Barca 2-2 today? Real Madrid benefits?
Now the vinyl sounds equal or more loud than the CD, my advice to Partridge 977 owners using Denon DL103R is to change to Jensen because isn't only more gain is really other word I recommend strongly because is the money best spent lately investing in audio.
Salas using Jensen takes the Valve Itch to other level....
Salas using Jensen takes the Valve Itch to other level....
Only with lower Rp tube which also means different μ & different gain structure i.e. different final sound. ECC88/6922 biases in the second stage without danger on same B+ and resistors values for instance. Another way is to glue an extra buffer stage at the output. Valve or MOSFET.
Hmm some cathode follower with ECC88, 6922, 6DJ8, 6N23P maybe. You could find many by searching in DIYA or just Google it. Why you would need that, the Itch with 800 Ohm Zo can drive even 10K pot (better 20K).
And what is the problem when feeding that AVC from 800 Ohm Zo, if you consider this post? http://www.diyaudio.com/forums/analog-line-level/209413-advice-simple-preamp.html#post2959238
What about the White Cathode Follower with a couple of Russian ECC88 that I have on hand?
As an example, given a setup that consists of a 6DJ8 with a bypassed cathode resistor of 200 ohms and a 10k plate resistor, the results are
Gain = 0.97
Zo = 3.44 ohms
PSRR = -65 dB
What's B+ value, input & output capacitor values?
As an example, given a setup that consists of a 6DJ8 with a bypassed cathode resistor of 200 ohms and a 10k plate resistor, the results are
Gain = 0.97
Zo = 3.44 ohms
PSRR = -65 dB
What's B+ value, input & output capacitor values?
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Don't know for sure as I haven't designed that. 200V B+ 0.1uF Cin and 2.2uF Cout for no less than 20K total RL including the next stage looks logical to me but others could comment further. It must be tested alone first to measure bias current, then calculate the new reg's CCS setting and dissipation for that as well as an RC toward that stage to bring down the rail level to its needs locally. Cin should substitute the Itch's now Cout.
Thanks Salas, the RL will be 300 ohms for headphones Sennhs HD600 & 100K for Borbely amps, have I to change Cout value?
It would probably take a large electrolytic for coupling headphones and I don't know details bcs that circuit is not my design. At least mention and/or link the origin of the design and make sure posting it here is allowed by the originator.
Salas said Cin. Its marked on the schema. Those schemas is conceptual by the way, not intended for straight on building.
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Thanks stajo, Salas answered my question about Cin & Cout, so your advice isn't build the schematic as is?