time for a cap upgrade!

[aragorn723]

Hi,

Just got notification that my K75-10 russian capacitors will be here today!  Can't wait to try the next upgrade in the Quickie as it has been quite a while.  Is there a way to burn them in without using up battery power?  Thanks,

Dave

 

[Grainger49]

Dave,

You can put them across the speaker outputs of an amplifier and play some dynamic music on repeat for 3-4 days.  Don't play too loud, don't have the speakers hooked up at the same time. 

This puts higher voltage than you will see in the Quickie across them and gives 90% of break in.

I like these caps.  I have bought several "lots" of them over the last 12 years.

 

[corndog71]

I don't think the K75's need a lot of break in.  They're a little warm-sounding at first but tend to even out after a short while.  Maybe 50 hours.  Great caps!

 

[Paul Birkeland]

How big are the caps? A 2.2uF cap will have a reactance of around 8 Ohms at 10kHz, dropping to around 4 Ohms at 20kHz.  This is probably just perfect to sit at the output of an amp, but breaking in a 22uF cap in this manner would be a rough load for most amps (An 8 Ohm resistor in series would fix that).

 

[aragorn723]

The caps are 2.2 uf.  Grainger, how would I do the burn-in?  Plug a cd player direct into the amp, then have a cap across each set of amplifier outputs?  Thanks,

Dave