A good try. Now let's see if they will give you some subjective difference. Let us know.
Almost there, I think. I just seem to have one issue, the voltages on Q4 are wrong. Both channels measure 1.0/2.0/0.8V on BCE pins. Both B and C pins start higher and then quickly drop to those values. The LEDs light momentarily and then go off. I've re-checked R13 and R12 and they are the supplied values. Supply voltage is a steady 45V. Any ideas please?
Is R2 OK value? Also recheck that the connections are following the schematic around the cascode. Q4 orientation also.
Your build was busy and compacted too with VU meters even. Not easy. How is it going with it, listened to more records and systems? All well?
Yes, many times, and listened, liked, well-staged scene of a nice warm sound and no sharp, Jazz, Rock, very good
Compared with the phonostage Primare R 32 - took another for comparison from my friend.
It seems to me that my best (subjectively) - my softer more "articular"
It is best scene is particularly felt in the middle of the range (trumpet, vocals, bass string...)
Long struggled with the noise (ground) but in the past
The only thing that remains is that a strongly heated MOSFETs in a shunt regulator but not critical (63 C)
UV meter were made only for the beauty -))
Compared with the phonostage Primare R 32 - took another for comparison from my friend.
It seems to me that my best (subjectively) - my softer more "articular"
It is best scene is particularly felt in the middle of the range (trumpet, vocals, bass string...)
Long struggled with the noise (ground) but in the past
The only thing that remains is that a strongly heated MOSFETs in a shunt regulator but not critical (63 C)
UV meter were made only for the beauty -))
Good idea thanks. To control the VU meter I have get circuit from reel to reel tapedeck in the Soviet - K157DA1
(This is a special IC designed for analog indicators) and picked off caps for more spectacular reverse arrows.
Corrective capacitors and resistors , are connected directly to the chip and they determine the transmission coefficient.
Your build looks really good. This will be going in my pre-amp with DC-B1, AK3493 DAC and headphone stage all in the same case. I had a different stage in mine previously using polystyrene RIAA caps and V1.0 regs, but wanted to build the best Salas phono stage I could for it. I had a few grounding issues but got the stage quiet eventually.
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Fascinating solutions to the western inventory. Possibly Wavebourn, VladimirK, and you, know that stuff best from most members here.
Hi,
after a lot of reading here i finally bought some 2sk170 to start building this phono preamp. After checking Idss i found the following values:
3.08, 3.53
4.07, 4.75, 4.80
5.83, 5.92
6.28, 6.30, 6.36
Can you advice me how to pair them and wich of the schematics to use ?
I have a Rega fitted iwth Ortofon OM5E and i intend to upgrade to Nagaoka Mp110.
Since few months ago i'm using a phono preamp based on the application note from LM49720 datasheet wich sounds really good.
I hope and expect this solide state to ouperform my opamp based preamp.
All the best !
after a lot of reading here i finally bought some 2sk170 to start building this phono preamp. After checking Idss i found the following values:
3.08, 3.53
4.07, 4.75, 4.80
5.83, 5.92
6.28, 6.30, 6.36
Can you advice me how to pair them and wich of the schematics to use ?
I have a Rega fitted iwth Ortofon OM5E and i intend to upgrade to Nagaoka Mp110.
Since few months ago i'm using a phono preamp based on the application note from LM49720 datasheet wich sounds really good.
I hope and expect this solide state to ouperform my opamp based preamp.
All the best !
And i was so happy when i found it on stock in the electronic store.
Also happy when the salesman says 25eurcents/piece
Now i get the reason
Maybe you will have a solution for me.
Thanks in advance!
If you can get more clean up the shop (I would)
I built Sallas Simplistic with 24 V suply and all sort of silly mods
Sallas went realy out of his way to help and I am happy as could be, listening to it.
I got boards for the Original Sallas low MC in the Tin bath and will start to populate them tomorow.
