Originally Posted by
Marco
Nice one, Guy. I'm glad you've heard one now on two decent systems ;)
When you say "weighted", do you know how much exactly? You're talking ideally 20g on the headshell for optimum performance.
Actually I imagine the amount needed would depend on the effective mass of the particular arm in use
The above weaknesses are addressed by optimally matched transformers and the use of a high quality valve MM stage (like your P10 ;)). I'm not sure which type of transformers were used when you heard the 103R today but I've yet to hear any better than the Haufe ones in the Auditorium 23 SUT.
The cartridge was used with my own T10, the old Audio Innovations T2 and another transformer using some Sowter units (less good). It was via a P10 and A30.
I'm not sure about the mounting of the magnet circuit, but the 103SA has a glass fibre composite epoxy shell and 6N OFC wiring, also used in the 103R. I'm sure that part of the leap in performance I noticed changing from the 'R' or 'Pro' to the SA was due to the improved resonance characteristics and structural integrity of the SA's superior quality shell.
Structural integrity is hugely important in cartridges, as is plugging air pockets within the cartridge body and dressing the lead out wires properly away from the coils & former.
However, in my opinion, the likes of the 103SA when properly partnered and set-up is as good or if not better than any cartridge I've heard at around £2k. The SA is only £445, and it doesn't cost over £1500 to optimise it. I've heard Lyras and Dynavectors at that sort of price which don't have anything like the same musical qualities.
It'd be interesting to compare it with the current SPU Royal N or for that matter one of the modern but quite enjoyable sounding Shelters such as 901. I don't think the 'R' is as good a cartridge as either of those but it is a deal cheaper too.
I'd agree about Lyra's and Dynavectors but the Shelter is certainly colourful.