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Old 28th January 2013, 06:20 PM   #4671
RK1 is offline RK1
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Quote:
Originally Posted by bayermar View Post
I think he is referring to safety ground.
Lifting that with a resistor (no matter what value) would violate all German electrical safety laws.
I can see only a single point where all the ground wires connect to the chassis - this is exactly how I do it, too. No problems with ground loops.
You could connect signal ground via a resistor with safety/chassis ground, but why if its dead silent? Don't fix it if it ain't broken...

Seeing the level of construction skills, I guess Stixx knows EXACTLY what he is doing.
Great piece of art BTW.

Cheers,
Martin
Probably you do not understand (or my englsh is bad )

My opinion has nothing to do with safety.

-> Casing (chassis), especially metal, it must be connected to the protective power (no resistor).

-> ElectricMass of the (mass supply) should be connected through a resistor to the protective power.

Have a nice day

Last edited by RK1; 28th January 2013 at 06:23 PM.
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Old 28th January 2013, 08:57 PM   #4672
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Originally Posted by Dimitris AR View Post
This is my new Tube preamplifier .
3 tubes ( two PCF200 and one EF183 ) on each channel , -3dB at 400KHz , gain 19.4dB .
Very nice!

Where did you get 10-pin sockets?
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Old 28th January 2013, 09:08 PM   #4673
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Originally Posted by Wachtfels666 View Post
my new preamplifier, still on construction but nearly finished:
She will definitely love it!
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Old 28th January 2013, 09:11 PM   #4674
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Quote:
Originally Posted by Stixx View Post
My C3G spud headphone amplifier is finally finished and playing music.

- C3G triode wired running at 145V / 15mA
- Cathode bias with tightly matched Morganite resistors and BG N bypass caps
- (yes, there is still people preferring a conventional setup over LED bias , but only when Black Gates are used)
- Salas SSHV2 with LC prefilter
- DC heaters
- Lundahl LL1689 wired 18:1
- custom wound toroid mounted on top
- all the guts underneath

Absolutely dead silent (Pitch Black background... ).
Peace of art! Now wait for similar designs on the market.
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Old 28th January 2013, 09:44 PM   #4675
jpak is offline jpak  United States
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Quote:
Originally Posted by Stixx View Post
Tube amplifiers with output transformers are better off with high impedance cans because of the availability of suitable transformers... --> see other thread on Diyaudio
Would you mind pointing me to the other thread?
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Old 28th January 2013, 11:35 PM   #4676
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Originally Posted by Wavebourn View Post
Peace of art! Now wait for similar designs on the market.
It is worth repeating Stixx produce it your self before the PRC copies you. Regards
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Old 29th January 2013, 06:12 AM   #4677
Stixx is offline Stixx  Germany
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Quote:
Peace of art! Now wait for similar designs on the market
Thanks Wavebourn! But man how would I hate that...

Quote:
Would you mind pointing me to the other thread?
Here you go --> The all DHT SET Headphone Amp

Quote:
It is worth repeating Stixx produce it your self before the PRC copies you
Unfortunately I have absolutely no means of producing this... apart from a few extra cnc parts
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Old 29th January 2013, 02:58 PM   #4678
Cassiel is offline Cassiel  Libya
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Default My transformer has grown a nipple.

I swear last night that area was flat. Painting toroids can be tricky. Just saying.
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Old 29th January 2013, 04:58 PM   #4679
Stixx is offline Stixx  Germany
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Must have been a hot night then...
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Old 29th January 2013, 07:27 PM   #4680
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Originally Posted by Cassiel View Post
I swear last night that area was flat. Painting toroids can be tricky. Just saying.
It's alive.
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