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supa phono preamplifier pcb

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S

souplesse

Member
Joined 2017
I am hoping you can help me with choosing the right capacitors for this project.

Will go with :

C1 : polystyrene ?
C2, C3, C9, C10, C11, C13 : Polarized Aluminum electrolytic capacitor (ie: nichicon muse kz, fg, Elna Silmic II, Panasonic FC) ? Audio oriented or "classic" ?
C4, C6, C5, C7 (RIAA): MKP/polypropylene ? Better ?
C8 : MKP/polypropylene (ie : Mundorf Mcap MKP) ?
C12, C14 : Basic Polarized Aluminum electrolytic capacitor

Am I good ?
 
S

scafas

Member
Joined 2007
pcb-audio.com/
silkscreen error

22k is the right value
659954d1517468547-bc550-bc560-low-noise-riaa-snl-elektor-jpg
 
F

Freecrowder

Member
Joined 2007
I'm still trying to clarify the board with the schematic. I count (3) 4.7uf caps on the schematic per channel. The red board shows (5) 4.7uf/ch?? Specifically what value cap goes in the position right next to the labeling "7815"? Also the transistors labeling is not that clear. Can you clarify please. Do you have an updated schematic that matches the board?
 
S

scafas

Member
Joined 2007
pcb-audio.com/
Freecrowder said:
I'm still trying to clarify the board with the schematic. I count (3) 4.7uf caps on the schematic per channel. The red board shows (5) 4.7uf/ch?? Specifically what value cap goes in the position right next to the labeling "7815"? Also the transistors labeling is not that clear. Can you clarify please. Do you have an updated schematic that matches the board?
Click to expand...
i update the board
 

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S

souplesse

Member
Joined 2017
Here is my MOUSER order:

Transistor :
BC550CTA
BC560CTA

Resistors :
MBB02070C4701FCT00

Caps :
c1=4,7pf
Replaced by 330pf to match with my cartridge
FKP2D003301D00HF00

c2,c3,c9,c10,c11,c13=4,7uF 25v.
UFG1H4R7MDM

c4,c6=3,3nF
FKP2D013301G00HSSD

c5,c7=10nF
FKP2C021001G00HSSD

c8=470nF
didn’t fit well, but wanted to try Nichicon MKP
QXP2E474KRPT

c12,c14=1uF
UFG1H010MDM1TD

Not populated for the moment.
Maybe this weekend if time allows.
 
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