Hi "noromance",
the Jelco is a very good tonearm as it is.
The above mentioned Ortofon is a Jelco OEM-product and will
not better the one you have significantly.
But you should consider two already mentioned tweaks plus an
extra one:
1. The Ammonite collar is a very fine tuning and will help stabilizing
the Jelco. If you buy one you should order the M6 screw (serial
is M5) WITH the nylon tip. That prevents harming the Jelco shaft.
2. For the Decca I would think about a slightly damping of your
tonearm and using a good ebony headshell from Yamamoto
or Uwe Bretschneider.
http://anamightysound.com/shop/headshells-en/uwe-n-o-s-headshells/
3. I have modified my Jelco 12" with a phono cable which goes directly
from the SME-connector to the phono stage.
With these tweaks my Jelco is in the same league with some of the
best recommended tonarms (Reed, Graham, SME, DaVinci...).
the Jelco is a very good tonearm as it is.
The above mentioned Ortofon is a Jelco OEM-product and will
not better the one you have significantly.
But you should consider two already mentioned tweaks plus an
extra one:
1. The Ammonite collar is a very fine tuning and will help stabilizing
the Jelco. If you buy one you should order the M6 screw (serial
is M5) WITH the nylon tip. That prevents harming the Jelco shaft.
2. For the Decca I would think about a slightly damping of your
tonearm and using a good ebony headshell from Yamamoto
or Uwe Bretschneider.
http://anamightysound.com/shop/headshells-en/uwe-n-o-s-headshells/
3. I have modified my Jelco 12" with a phono cable which goes directly
from the SME-connector to the phono stage.
With these tweaks my Jelco is in the same league with some of the
best recommended tonarms (Reed, Graham, SME, DaVinci...).