Simplistic NJFET RIAA - Page 734 - diyAudio
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Old 1st March 2012, 02:13 AM   #7331
Salas is offline Salas  Greece
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Quote:
Originally Posted by vgeorge View Post
Here it is one recording I made with the simplistic. One of my favorite tracks to evaluate sound quality
Dusty Springfield who sang the track says you got a nice musical tone, one of the better files posted here, surely a nicely synergistic TT and a well executed simplistic, just be careful with those rest HV DIY gear when tampering.

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Originally Posted by vgeorge View Post
And some porn from the phono and from my cave!
The #26 pre and Baby Huey EL84 amp look purpose built, no frills, but very nicely put together non the less. The speakers, wow!
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Old 1st March 2012, 02:17 AM   #7332
Salas is offline Salas  Greece
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Originally Posted by atupi View Post
Would be a good idea to buy more 2SK170 GR as they are so cheap? I think is the last stock from Romania and is around 30eurocents/piece.
They can be very useful parts if you know how to fix for GR the many DIY circuits designed around BL IDSS range.
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Old 1st March 2012, 07:02 AM   #7333
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Quote:
Originally Posted by Salas View Post
Dusty Springfield who sang the track says you got a nice musical tone, one of the better files posted here, surely a nicely synergistic TT and a well executed simplistic, just be careful with those rest HV DIY gear when tampering.



The #26 pre and Baby Huey EL84 amp look purpose built, no frills, but very nicely put together non the less. The speakers, wow!
Thanks for your nice comments salas.
I am always very careful with HV. I use probes and stay away.
The Baby Huey is very nice. I like it better than F5 and Aleph J.
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Old 1st March 2012, 07:22 AM   #7334
Salas is offline Salas  Greece
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Did you ever try shorter XLR interconnects to Huey and longer speaker cables, i.e. inverse installation of that in the pictures?
*If you look at F5 and BH schematics there are enough similarities in approach beyond FET & Vacuum domains or BH's shunt feedback.
**gingertube was prowling the tube threads with an eye for revisiting Baby Huey recently by the way. Maybe he will have something up his sleeve in due time.
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Old 1st March 2012, 09:08 AM   #7335
vgeorge is online now vgeorge  Greece
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Unfortunately no. I do not have that long speaker cables now. These should be 7 meters minimum. Would you suggest to bring the Huey closer to the pre and leave the active cross and amp for the sub were they are now?
*One of the reasons I liked the baby huey.
**I am waiting for this, but something tells me that it' s going to be with a mosfet follower and would like to stay tube only on this.
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Old 1st March 2012, 09:17 AM   #7336
Salas is offline Salas  Greece
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You know, since the input 12AX7s on the Huey have a Miller and the many meters interconnect has a capacitance blah, blah, maybe bringing the Huey closer to the #26 pre could yield more performance. If you can do an easy rearrangement it would show. Just an idea.
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Old 1st March 2012, 11:03 AM   #7337
vgeorge is online now vgeorge  Greece
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Yes, I know. Total capacitance of my interconnects is around 700pF for the 7 meters. I could reduce the input resistance to 47K from 100K. Is there any influence for being in parallel with the 25K input resistance of the active cross?
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Old 1st March 2012, 02:22 PM   #7338
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Hi Salas,

i have built your phono stage to fet. For the riaa i have used:
Resistor metal film 1% 47K,
Resistor metal film 1% 6.8K,
N2 Cap 47n + 1.5n to 5% (i measured 46500),
N3 Cap 15n + 330p + 100p (i measured 15300).
This value are correctly for accurate riaa?

Many thanks
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Old 1st March 2012, 02:32 PM   #7339
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What is accuracy of your meter?
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Old 1st March 2012, 02:37 PM   #7340
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