Why is high capacitance good?

Thanks for the world of info you have provided Al, very rarely do I come across such meticulously written technical posts.

Just one last question, could you please suggest what range of figures of Capacitance, Inductance and Resistance do you consider "low" for speaker cables and interconnects ?
I dont want to ask the manufacturer of my cables to answer these questions because he will try to always respond in a positive manner :).

Hi Pani,

What would be best, of course, is an analysis reflecting the particular component impedances, cable lengths, and cable parameters that are being considered. But that is probably impractical to cover here in a generally applicable way. And if you were to present your question about how low is low to ten different engineers, probably no two sets of numbers would be the same. But as a rough general ballpark I would say the following:

For interconnects, where capacitance is particularly important:

Low capacitance: Below 25 pf/ft (picofarads per foot)
Medium capacitance: 25 to 75 pf/ft
High capacitance: Above 75 pf/ft

For speaker cables, where resistance and inductance are particularly important:

Low resistance: Below 12 gauge (lower gauge = thicker)
Medium resistance: 12 to 16 gauge
High resistance: Above 16 gauge

See a wire gauge table, such as this one, to convert gauge to resistance, if necessary for analysis purposes.

Low inductance: Below 100 nH/ft-run (nanoHenries per foot-run, representing two feet of wire for the round-trip through both conductors)
Medium inductance: 100 to 500 nH/ft-run
High inductance: Above 500 nH/ft-run

Best regards,
-- Al

Thanks for the info Al.