Dear @jagjag : It does not matters the type of cartridge you can use it, with 5m. cable from the TT to the Halo RCA phono inputs you will have a " severe " cartridge signal degradation especially at high frequency due to the cable resistance and what you say can happens about that the very low signal is way suceptible to be contaminated rfi/emi and the like no matter waht.
Now, my next advise depends on the importance that the LP listening sessions has to you and how often you listen to LP and even how many LP's you own and if LP is your main listening medium ( I doubt it because your Halo is not precisely for analo but....) then that TT must be nearest to the Halo ( no more than 1.25m. ) and the other electronics/speakers at " long distance " from the Halo because are all high level units including the signal to the speakers and the Halo output impedance is low enough for you have not problem down there other that all the money you need for the overall system cables you have to buy.
The other solution is that you buy a true balanced phono stage and connect it from those 5m. through the Halo balanced input.
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.
Now, my next advise depends on the importance that the LP listening sessions has to you and how often you listen to LP and even how many LP's you own and if LP is your main listening medium ( I doubt it because your Halo is not precisely for analo but....) then that TT must be nearest to the Halo ( no more than 1.25m. ) and the other electronics/speakers at " long distance " from the Halo because are all high level units including the signal to the speakers and the Halo output impedance is low enough for you have not problem down there other that all the money you need for the overall system cables you have to buy.
The other solution is that you buy a true balanced phono stage and connect it from those 5m. through the Halo balanced input.
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.