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Mundorf M-Lytic 4 pole caps

midband

Wammer
Wammer
Jun 12, 2008
82
3
0
London
These caps have 4 pins paired off as input & output; the schematic has the 2 +ve pins commoned & likewise the 2 -ve pins. Can someone explain how it can be directional?

 

hearingisbelieving

Wammer
Wammer
May 10, 2011
5,669
219
108
Bendorf, Germany
AKA
Chris
HiFi Trade?
  1. No
These caps have 4 pins paired off as input & output; the schematic has the 2 +ve pins commoned & likewise the 2 -ve pins. Can someone explain how it can be directional?
Are you just interested in the tech behind the cap or do you think you need one of these for a project?

 

midband

Wammer
Wammer
Jun 12, 2008
82
3
0
London
Ive built a pair of kit mono blocks that have these in the ps. From the sparse info on the Mundorf site it logically seems that input & output are one & the same thing. Is this just a marketing ploy where the only difference making a 4 pin can to a 2 pin can is the price?

 

awkwardbydesign

Perfect, apparently.
Wammer
Mar 5, 2012
10,117
1,788
173
HiFi Trade?
  1. No
Is the drawing wrong, that is don't link the positives together?

 

felix

Wammer
Wammer
May 5, 2006
269
3
0
Baff
AKA
Martin
4-pole connections work because they make the internal losses of the cap a virtue.

Picture the capacitor as a long pair of parallel plates instead of being rolled-up inside the can.

One pair of terminal poles puts electricity on the plates at one end, the supply.

The other pair at the other end supplies cleaner power to the load circuit.

The inductance and resitance of the plates - the distance between the two 'ends' makes this a distributed CLRC filter, which is a good thing (and a quite measureable effect - the original DNM/Aerovox 4pole caps gave some good data showing this)

If you folded this notional plate then connected the terminal pairs together directly you've lost this effect and spent the extra money for no gain.

 

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