Hello Everyone
It has been now over 4 years since the last post.
We have now moved and live in Cape Breton. So the room is not exactly the same room as the past. Actually a very different room! My tests have always been done not from memory though. Always run 3 amps of similar style and brand.
Speaker tests were one cap at a time leaving the other speaker as it was.
I do have updates coming. I had one amp completely redone (Fisher 500C) with Duelund CAST tinned copper. (updates on that coming)
I have a set of Duelund IC's now to evaluate.
I can say when I had Chris at Parts Connexion install all the CAST caps I wondered what I had done. Very stiff, very mechanical. I was not mad just more disappointed.
All of my past tests were often one cap at a time and test. Not replace the entire amp! It is very disorientating to replace all the caps at once. Going all the way to CAST caps.
One of the other amps has been rebuilt with all Jupiter Copper Foil caps. Another favourite of mine. During the Pandemic I could only get what was in stock. Limited of everything.
I waited until March of this year to get the amps fixed because we did live fairly close to Parts Connexion but would not be after the move.
So that being the reason to do it all at one time. (move)
I had issues for sure with Jensen Copper Paper tube caps. At least 3 of them had catastrophic failures. Two of the times damage was done to the amp. The third I caught in time. They would just fail after many years and for no reason. Right out of the blue!
The scary part was not just the cost of the cap! The cost of losing cap but the damage and the hours to repair in shop!
I had posted on this after failure 2 I think. After failure 3 all of the Jensen caps came out. I would never sell them even as used because it is just too risky for anyone.
My repair guy from my home town was very good guy as I have mentioned years ago. To him take out ALL those exotic caps and problems go away. Yes, in a way...
He also suggested maybe that was the cost of having caps like this if I wanted the sound. In reality I wanted the sound but not the risk of fire or expensive damage.
I have had Jupiter leads fall off. Duelund leak oil and Ampohm fail as well. None caused damage though except Jensen. Sadly. Nothing against the caps but one should be concerned. Maybe mine were bad batch but they were from different times.
I was checking the views of this thread. I knew it was a lot years ago but 10,853,109 is more than I think many would expect and for sure more than I expected!
When I started the blog I said well I could not find unbiased non advertising driven info on capacitors. How good were they? Compared to other things what was the value? So I just started posting my tests. I also wanted other people to post later on as well to confirm it. In the beginning I did not know if anyone would see it.