I have been following Jimmy's site on his testing of the "no name" electrolytic capacitor in the power supply. He says he could recognize the difference in a few seconds and that is over the Jensen 4 pole Electrolytic.
"on several seconds" I have not heard the Jensen 4 pole only have the 2 pole but on "several seconds" I could hear how much better the vintage electrolytic is. To me this means "if" the Jensen is considered a very good electrolytic by Jimmy and I am sure he has heard most all and within "several seconds" he could hear an easy difference we are nowhere near as good as we could be with electrolytics!
Occasions where I could hear the difference within "several seconds".
1 going from vintage foil in oil tweeter caps to Duelund VSF.
2 going from Duelund VSF tweeter caps to Duelund CAST.
3 going from vintage woofer inductor to Duelund VSF
4 going from Jensen Electrolytic back to vintage
5 comparing Sonicaps to vintage foil caps
Out of all the parts I have changed hearing the difference "in several seconds" happens far less than "needing hours" to hear the difference or admitting you can not hear the difference or are not sure what the difference is?
Parts that took time but differences can be heard
1 comparing a vintage foil midrange cap to a Duleund VSF
2 comparing Mundorf Supreme to Sonicaps
3 comparing Duelund Silver 2.0 to stranded copper for speaker cable.
4 comparing on a friends Khorns 20 yr old stock poly caps to Sonicaps. (I can't hear the difference)
If one can hear the difference "in several seconds" that indicates quite often a HUGE resonance reduction. I had mentioned on here before if a Jensen Electrolytic is an indication of a very good modern electrolytic then modern electrolytics are very poor! An area where MUCH can be done for improvement.
I know some will say how can you make big improvements over a top level part? Well Duelund VSF was considered the best cap in the world " super natural" and a CAST came along and is wayyyyyy quieter.
"on several seconds" I have not heard the Jensen 4 pole only have the 2 pole but on "several seconds" I could hear how much better the vintage electrolytic is. To me this means "if" the Jensen is considered a very good electrolytic by Jimmy and I am sure he has heard most all and within "several seconds" he could hear an easy difference we are nowhere near as good as we could be with electrolytics!
Occasions where I could hear the difference within "several seconds".
1 going from vintage foil in oil tweeter caps to Duelund VSF.
2 going from Duelund VSF tweeter caps to Duelund CAST.
3 going from vintage woofer inductor to Duelund VSF
4 going from Jensen Electrolytic back to vintage
5 comparing Sonicaps to vintage foil caps
Out of all the parts I have changed hearing the difference "in several seconds" happens far less than "needing hours" to hear the difference or admitting you can not hear the difference or are not sure what the difference is?
Parts that took time but differences can be heard
1 comparing a vintage foil midrange cap to a Duleund VSF
2 comparing Mundorf Supreme to Sonicaps
3 comparing Duelund Silver 2.0 to stranded copper for speaker cable.
4 comparing on a friends Khorns 20 yr old stock poly caps to Sonicaps. (I can't hear the difference)
If one can hear the difference "in several seconds" that indicates quite often a HUGE resonance reduction. I had mentioned on here before if a Jensen Electrolytic is an indication of a very good modern electrolytic then modern electrolytics are very poor! An area where MUCH can be done for improvement.
I know some will say how can you make big improvements over a top level part? Well Duelund VSF was considered the best cap in the world " super natural" and a CAST came along and is wayyyyyy quieter.