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Capacitor

Dear friends I am interested to upgrade my caps in the tube preamp from Audio theta tin foil 3uf200VDC to Miflex1uf 240VDC copper foil what are your thoughts will reducing the value to 1uf affect the bass and frequency response or should I go with a higher value than 3uf  
jasbirnandra

Showing 3 responses by erik_squires

erik_squires
15,788 posts
 
Clarity is what I use in my speakers and I am extremely happy with them.  Open and neutral without adding sparkle that isn't there.

I've heard gear with Wima, including AR and it all goes to neutral and not particularly moving to me.


erik_squires
15,788 posts
 
2 uF is almost perfect.  It's got low reactance and most boutique caps aren't too physically large at this size.

Of course, if you have lots of space and lots of money go with 4uF. :)
erik_squires
15,788 posts
 
It is my impression/memory that 2uF is the minimum size for a preamp output capacitor.

1uF ~= 8 kOhms at 20 Hz. Calculate the ratio of this to the amplifier’s input impedance to see how much you would lose.

https://www.calculatorhut.com/physics/reactance.html
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