Luca
pfm Member
Part. 1
(I apologize for my bad english but it isn’t my mother language).
In the 2005, I looked for information, on the net, about a rare tonearm the Syrinx PU3B. I own one since the 1990. A kind forumer replied me on vinyl engine. He was J7. We had an intense exchange of e.mails and found to have the same purpose: to design a toneam. I sent a drawing to him and he asked my help for the design because he needed a skilled drawer. After more than two years of work, J7 sent me the final result of the research: it was the PU7 "the product of the year award winner of HFW".
With a lot of enthusiasm, I mounted it on one Sondek of mine for a first listening test. It didn't sound badly but I feeled that something was missing. So I compared it with the Syrinx PU3B. I own two identical Sondeks and for a first test used two AT95e. What was missing comes out at the fist listening test with evidence. The PU3B had a vivider, richer and defined sound expecially on the mid-high frequencies. I definy that defeat in that PU7 as "a lack of energy". Energy wasted for an undeterminated reason. I tried every kind of set up, several cartridges but the sound didn’t improve. I spent a lot of time in the two following years to solve that defeat ...
I guessed it was due to some mistakes in the design as :
discontinuity in structural parts of the arm;
the choice of materials;
shapes in the component parts;
an excess of damping somewhere in the arm;
or other ...
The part 2 will follow soon so pls don’t reply before the post ending.
(I apologize for my bad english but it isn’t my mother language).
In the 2005, I looked for information, on the net, about a rare tonearm the Syrinx PU3B. I own one since the 1990. A kind forumer replied me on vinyl engine. He was J7. We had an intense exchange of e.mails and found to have the same purpose: to design a toneam. I sent a drawing to him and he asked my help for the design because he needed a skilled drawer. After more than two years of work, J7 sent me the final result of the research: it was the PU7 "the product of the year award winner of HFW".
With a lot of enthusiasm, I mounted it on one Sondek of mine for a first listening test. It didn't sound badly but I feeled that something was missing. So I compared it with the Syrinx PU3B. I own two identical Sondeks and for a first test used two AT95e. What was missing comes out at the fist listening test with evidence. The PU3B had a vivider, richer and defined sound expecially on the mid-high frequencies. I definy that defeat in that PU7 as "a lack of energy". Energy wasted for an undeterminated reason. I tried every kind of set up, several cartridges but the sound didn’t improve. I spent a lot of time in the two following years to solve that defeat ...
I guessed it was due to some mistakes in the design as :
discontinuity in structural parts of the arm;
the choice of materials;
shapes in the component parts;
an excess of damping somewhere in the arm;
or other ...
The part 2 will follow soon so pls don’t reply before the post ending.