Want to know which diy preamp design is most similar to the X0.2 and where schematics might be available
Also looking to modify the the input and output coupling caps on an X0.2 and they don't look the same as the X1
In an earlier post Mr. Pass offered this on the X1:
>>There are film input capacitors (1 or 2 uF depending on the rev #) and 220 uF + film bypass on the outputs.
You may replace the caps with the parts of your choice, but of
course you bear the consequences of mistakes.
As the to 220 uF output caps, we are currently favoring the Elna
Silk capacitors, of which there is an inexpensive 220 uF at 16V
available. >>
Values anyone?
Thanks very much!!! Barry
Also looking to modify the the input and output coupling caps on an X0.2 and they don't look the same as the X1
In an earlier post Mr. Pass offered this on the X1:
>>There are film input capacitors (1 or 2 uF depending on the rev #) and 220 uF + film bypass on the outputs.
You may replace the caps with the parts of your choice, but of
course you bear the consequences of mistakes.
As the to 220 uF output caps, we are currently favoring the Elna
Silk capacitors, of which there is an inexpensive 220 uF at 16V
available. >>
Values anyone?
Thanks very much!!! Barry
Simmilar to X0.2 you say?
Well, you can try this ...
http://choky.diyaudio.rs/downloads/The Pumpkin & Shunty.pdf
and the thread is here ...
http://www.diyaudio.com/forums/pass-labs/119070-pumpkin-preamp-more-boring-making-thread.html
Highly regarded design thx to Zen Mod.
Want to know which diy preamp design is most similar to the X0.2 and where schematics might be available
Also looking to modify the the input and output coupling caps on an X0.2 and they don't look the same as the X1
In an earlier post Mr. Pass offered this on the X1:
>>There are film input capacitors (1 or 2 uF depending on the rev #) and 220 uF + film bypass on the outputs.
You may replace the caps with the parts of your choice, but of
course you bear the consequences of mistakes.
As the to 220 uF output caps, we are currently favoring the Elna
Silk capacitors, of which there is an inexpensive 220 uF at 16V
available. >>
Values anyone?
Thanks very much!!! Barry
Well, you can try this ...
http://choky.diyaudio.rs/downloads/The Pumpkin & Shunty.pdf
and the thread is here ...
http://www.diyaudio.com/forums/pass-labs/119070-pumpkin-preamp-more-boring-making-thread.html
Highly regarded design thx to Zen Mod.
I hate to do this but ...
Read this pls ... then google is u best friend ...
http://www.diyaudio.com/forums/pass-labs/90030-coupling-caps-aleph-ono-xono-aleph-x0.html
I saw too many different between X0.2 & Pumpkin but there're no problem I need only any advice for 10uF CAP, Where can I find AEON CAP ?
X0.2 used additional gain stage above Pumpkin and used X-CIRCUIT only buffer stage not suitable for gain stage !
Thanks
Anadigit
Read this pls ... then google is u best friend ...
http://www.diyaudio.com/forums/pass-labs/90030-coupling-caps-aleph-ono-xono-aleph-x0.html
Hi Anadigit, did you find your axon (note the spelling) caps? although they don't stock the 10 uF size, partsconnexion has 11uF axons for $2.88 US each. AXON True Cap Metallized Polypropylene Capacitors
Tony.
Tony.
AEON
Hi,
No, I still finding 10uF AEON from US supply. Now I have some problem about 2SK389 from China supplier I think it was remarked from someone whom want to get my bullet
When I test original 2SK389BL from Borbely Audio I got 12mA but when I change to Chinese 2SK389BL (look like new screened) I got over 30mA !!!
If i have a time enough for DIY I'll cut a circuit of X-buffer to Pumpkin Preamp
Thanks
Anadigit
Hi Anadigit, did you find your axon (note the spelling) caps? although they don't stock the 10 uF size, partsconnexion has 11uF axons for $2.88 US each. AXON True Cap Metallized Polypropylene Capacitors
Tony.
Hi,
No, I still finding 10uF AEON from US supply. Now I have some problem about 2SK389 from China supplier I think it was remarked from someone whom want to get my bullet
When I test original 2SK389BL from Borbely Audio I got 12mA but when I change to Chinese 2SK389BL (look like new screened) I got over 30mA !!!
If i have a time enough for DIY I'll cut a circuit of X-buffer to Pumpkin Preamp
Thanks
Anadigit
Semi complete !
These're my semi complete preamp, I used 20uF AEON and 10uF Panasonic.
Goal of this preamp is Unbalance Output because it's hard to select matched resistor and current LED for CCS control. I prgram Atmega MCU only volume and selector control also display shut down function. I can't find hard to obtain 20*1 VFD display as original designed.
Thanks
Anadigit
These're my semi complete preamp, I used 20uF AEON and 10uF Panasonic.
Goal of this preamp is Unbalance Output because it's hard to select matched resistor and current LED for CCS control. I prgram Atmega MCU only volume and selector control also display shut down function. I can't find hard to obtain 20*1 VFD display as original designed.
Thanks
Anadigit
Attachments
VFD display
Now I try to change 7-segment to 20x1 VFD display. it's almost completed
I bought this display from OEM factory of NAD S500 cd player display as spare parts.
I have many idea to use them and apply to other function of input/output and volume control.
Now I try to change 7-segment to 20x1 VFD display. it's almost completed
I bought this display from OEM factory of NAD S500 cd player display as spare parts.
I have many idea to use them and apply to other function of input/output and volume control.
Attachments
analog_guy said the same.....
Yes, you said the same to him, too
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