using V Cap Odam To Improve SQ In mid band of speaker XO

OP:

Something else you should be aware of is that when parallel caps became fashionable (1980s) caps weren't nearly as good as they are today.  Electrolytics in particular had high ESR's and high inductances and were not easily available any better.

I strongly encourage you to experiment on your own here, and in order to experiment you need to have affordable parts.  Try out some affordable Mundorf MKP caps and splurge a little on small Audyn TruCopper as well. Axon makes affordable film caps which can be greatly enhanced with either of the other two.

I like Mundorf MKPs a lot for the price, and physical size, but they sound a little dark.

Best,

Erik

Erik,

Thank you for support.

Would you please explain why there Is a big advantage If we change with quality film cap electrolytic cap that shunts to ground. Doesn't It go all the signal through shunt cap to ground.

OP: Not sure what you are asking, but let me clarify.

Generally speaking, the basic filter components are either in series with a driver, or parallel to it. It’s the later I refer to as shunting to ground because a cap becomes a short at high frequencies. Likewise a coil becomes a short at low frequencies.

A difference of 0.2-0.5 Ohms in series with an 8 Ohm driver is not a big deal, but if the part is parallel with the driver, a difference of this much can be major.

The special case of a Zobel, with a cap going to ground with a larger resistor (>4 Ohms often) is again a situation where the ESR/DCR is less critical.

In post https://forum.audiogon.com/discussions/using-v-cap-odam-to-improve-sq-in-mid-band-of-speaker-xo/post?postid=2763745#2763745 you are saying

" Lastly, if this cap goes to ground the big improvements are going from electrolytic to film, and less so after that. If you have already made that change getting fancier is a tiny difference if any. "

I would like to know why there Is big Improvement when you change cap that pass signal to ground.

OP: 

Ahh, well the conventional wisdom is that the caps in series with the drivers matter more than the  caps in parallel, but a couple of users have reported that even with some positive effects from stepping from electroclytic caps to at least a film. 

I strongly encourage you to experiment for yourself with affordable parts. :)

Best,

Erik