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Graaf GM20 mods - help!

Hi Elberoth,

That's also something that is on my agenda for upgrading my Graaf GM20 clones.

However what I will use are Siemens MKV capacitors which were also used in my Vacuumstate RTP3 preamp and other
candidates are Miflex KPCU copper foil paper/propylene in oil types which are reasonbly priced and got very good reviews,
see here:

https://www.humblehomemadehifi.com/Cap.html

and here on youtube where they were tested in speaker crossovers comparing them with Rike caps and other brands:


But there are also other mods I'm considering like swapping resistors in the signal path ( preferably using Vishay naked Z-foils )
and I'm also planning to make the driver B+ regulated with a super reg ( CCS in combination with a shunt regulator ). This can
all be done relative easily in my mono block clones since they are completely hardwired, so no PCB's that could be damaged, see here:

Graaf GM20 clone #1.jpg

Graaf GM20 clone #4.jpeg

Regards,
airtangent
 
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