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Mini-Me phono preamp
Mini-Me phono preamp
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Old 8th February 2018, 12:24 PM   #71
flancfuster is offline flancfuster  Romania
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Hi everyone,

Here is my phono stage build. For MC amplification I used Lundahl transformers LL1941 and for MM part I used Mini Me schematic ( thanks Ronny for sharing it with us). It sounds awesome. I'm using it for my Thorens TD-309 TT with AT33sa cartridge. PCB was designed by a friend of mine and me and they were made in China.

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Old 8th February 2018, 06:08 PM   #72
Koifarm is offline Koifarm  Netherlands
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Great looking phono preamp.
Thank you for posting your experience with the Mini-me.
After building several different phono preamps, i also like the mini-me.

Ronny

Intergrated preamp with mini-me phono below.
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Last edited by Koifarm; 8th February 2018 at 06:13 PM.
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Old 8th February 2018, 07:20 PM   #73
flancfuster is offline flancfuster  Romania
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Quote:
Originally Posted by Koifarm View Post


Great looking phono preamp.
Thank you for posting your experience with the Mini-me.
After building several different phono preamps, i also like the mini-me.

Ronny

Intergrated preamp with mini-me phono below.
Thank you Ronny,

One little thing I want to try, to use silver mica capacitors or polystyrene in RIAA circuit. What do you think?

Regards,
Sorin
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Old 8th February 2018, 08:32 PM   #74
Koifarm is offline Koifarm  Netherlands
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Polystyrene/styroflex(1%)are my favorites for riaa filtering, silvermica for cartridge loading.
Vishay mkp1839 i also use often in riaa filtering.

Last edited by Koifarm; 8th February 2018 at 08:52 PM.
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Old 9th February 2018, 03:52 AM   #75
lexx21 is offline lexx21  United States
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Mini-Me phono preamp
Is there any chance of having the cad files available?
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Old 9th February 2018, 07:14 AM   #76
flancfuster is offline flancfuster  Romania
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Originally Posted by Koifarm View Post
Polystyrene/styroflex(1%)are my favorites for riaa filtering, silvermica for cartridge loading.
Vishay mkp1839 i also use often in riaa filtering.
Nice, I found polystyrene with the exact values at farnell, LCR is the maker. Do you have any experience with that? Any other recommendation on maker?

Sorin
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Old 9th February 2018, 07:17 AM   #77
flancfuster is offline flancfuster  Romania
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Is there any chance of having the cad files available?
I can give you the gerber files. The design was made in Sprint Layout.
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Old 9th February 2018, 09:49 AM   #78
Koifarm is offline Koifarm  Netherlands
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Quote:
Originally Posted by lexx21 View Post
Is there any chance of having the cad files available?
Yes, mine are with Designspark. This program is free. Just send PM with your emailadress.

Quote:
Originally Posted by flancfuster View Post
Nice, I found polystyrene with the exact values at farnell, LCR is the maker. Do you have any experience with that? Any other recommendation on maker?

Sorin
No experience with LCR. Just try and listen. I use a lot of n.o.s. Philips.
Not polystyrene but als very good is vishay mkp1839.
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Old 21st March 2018, 08:37 PM   #79
flancfuster is offline flancfuster  Romania
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I just replaced RIAA capacitors with polystyrene. Big differences in sound. They are LCR FX type from farnell.
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Old 22nd March 2018, 07:48 PM   #80
Koifarm is offline Koifarm  Netherlands
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Normally there is no big difference between capacitors types or values are different. I hope you like the change in sound.
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