Valve Itch phono

[merlin el mago]

Surely vocal Jazz

 

[The Space Egg Corp]

I think you have made the perfect thing for that.

S M O O T H . . .

No JFET's in the 'Jazz Age'...

I think it's probably good to have BOTH...'Itch' & 'Simplistic'...

...Different flavours...different times...different tunes ?

Si.

 

[The Space Egg Corp]

Count Basie...
...now playing

Si.

 

[merlin el mago]

Are different devices, one more audiophile & the other more emotional.

Jazz = Emotion

 

[Salas]

All well then. I can even smell some of the Catalan wine you picked for it goes best with Jazz.
A question, is your signal generator 600 Ohm output maybe? Could have not interfaced best with the SUT during tests so we could not know the gain exactly by compressing the sinewave somehow, but I estimate it at about 60dB for cartridge source and your SUT. Sounds like that?
----------------
What happened with you Deco Doctor, did you find equal channels SUT gain solution? (Another excellent Itch build).

 

[Salas]

It doesn't arc any more since I no longer connect the PS ground to the bottom plate of the chassis. The PCB is held off the chassis with a regular motherboard standoff.

Better late than never they say. Short answer is: HV creepage. I.e the clearances around R1 pads and other highly tensioned parts are minute to the underside ground plane for the 300V+ high voltage in the green rectification board. It arcs over the moment its associated with the high energy mains source ground. R1 acted like a fuse.

 

[merlin el mago]

All well then. I can even smell some of the Catalan wine you picked for it goes best with Jazz.
A question, is your signal generator 600 Ohm output maybe? Could have not interfaced best with the SUT during tests so we could not know the gain exactly by compressing the sinewave somehow, but I estimate it at about 60dB for cartridge source and your SUT. Sounds like that?
----------------
What happened with you Deco Doctor, did you find equal channels SUT gain solution? (Another excellent Itch build).

Care in spite of drinking very much wine, is raised very soon to the head but with a good woman to the side it is supported well this when sounding jazz. Yes the LAG 120A have an output impedance of 600 ohms. Yes, it haves more gain (and other important things) than the Simplistic NJFET RIAA

Wich mains tranformer are you using & where did you bought?

 

[Salas]

Send me a bottle of that wine if it brings good women then.

Locally made EI with oriented steel.

 

[merlin el mago]

Send me the good women & I will send you a bottle of that wine.

 

[Salas]

But the women and the wine must be combined in the same place, not criss cross traveling.

 

[merlin el mago]

We forget one important thing: the music.

About fuses ceramic 6x32mm 380V the seller don't have 200mA only have 0,25A or 160mA, wich one?

 

[Salas]

160mA

We did not forget the music, that is why we made Itch.

 

[merlin el mago]

Exactly you made the Itch, I only enjoy thanks to you.

 

[Salas]

See what I scored for Itch, you recognize?

 

[merlin el mago]

Looks very good, Sowter or Cinemag?

For ceramic fuse 6x32 380V 160mA can I use fuse holder 250VAC, right?

 

[Salas]

Its the guts of ISO-MAX® MC-2RR-L $499 box. JT-44K-DX 1:10 Step-up Transformers.

JENSEN TRANSFORMERS, INC. - MOVING COIL TRANSFORMERS

 

[Salas]

For ceramic fuse 6x32 380V 160mA can I use fuse holder 250VAC, right?

Ask the seller for their proper holder. 6x32mm holders have the distance and body material not to arc at 300-400V when rated for 380V fuses.

 

[merlin el mago]

You will have more gain than with my Partidge 977 1:6, these very nice step-ups are 1:10, congratulations for the purchase, enjoy.

 

[Salas]

Got them for $100 taken out from a naval PA amp.

 

[merlin el mago]

Did you get that way? seems brand new.