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-   -   pcb of pre phono indiscreto (http://www.diyaudio.com/forums/vendors-bazaar/228330-pcb-pre-phono-indiscreto.html)

scafas 21st January 2013 03:54 PM

pcb of pre phono indiscreto
 
i have some pcb of this great phono preamplifier for MM pickup.
sold for 13 usd (stereo version) with free ship.
ask me to scafas@tiscalinet.it
http://www.pcb-audio.com/immagini/indiscreto-006.jpg

scafas 21st January 2013 04:08 PM

prototipe board
 
this the first prototipe board of phono preamplifier
http://www.pcb-audio.com/photos/01122011_001_1.jpg

pcb-audio.com

scafas 30th January 2013 10:49 AM

Quote:

Originally Posted by scafas (Post 3335992)
i have some pcb of this great phono preamplifier for MM pickup.
sold for 13 usd (stereo version) with free ship.
ask me to scafas@tiscalinet.it
http://www.pcb-audio.com/immagini/indiscreto-006.jpg

or 7eu. escluse ship

oz7aff 30th January 2013 11:50 AM

Is it possible to see a schematic and a Bom ?

scafas 30th January 2013 03:55 PM

schematic
 
Quote:

Originally Posted by oz7aff (Post 3348487)
Is it possible to see a schematic and a Bom ?

the schemaic is here :
http://www.pcb-audio.com/circuiti-st...indiscreto.jpg

and bom:
http://www.pcb-audio.com/photos/indiscreto-004.jpg

oz7aff 30th January 2013 07:01 PM

BOM means Bill off Materials, also a list of the components that are used.

Is the transistors paired in any ways ?

Do you supply it with +27VDC and -9VDC ?

scafas 30th January 2013 07:53 PM

[QUOTE=oz7aff;3349038]BOM means Bill off Materials, also a list of the components that are used.

Is the transistors paired in any ways ?

Do you supply it with +27VDC and -9VDC ?

[/QUOTE
yes , i supply it with +27_0_-9
ok , you can see in the original here:
inDiscreet Phono Pre-amplifier [English]

scafas 30th January 2013 08:00 PM

2n2222
 
i try also the 2n2222 instead bc109 and the preamplifier work very well .
I use a pair of lm317 in the psu to get +27v and -9v. from a separate secondary transformer.


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