Few technical questions about an Ortofon MC cart on a Scout 2...


Non-technical enthusiast here, facing a bit of a conundrum...

I picked up a Scout 2 today, and the previous owner was kind enough to throw in a high end Ortofon X5-MC, albeit "possibly broken". During handling he knocked the cantilever. It’s perfectly centred and the stylus appears in tact, but when the cartridge makes contact with vinyl the cantilever recedes or "lifts" a hair...as in, it gets pushed back into the body by about 1-1.5mm.

The record player itself is in beautiful shape and appears to be functioning perfectly, but every record I’ve played so far sounds sluggish and rather muffled in the low end - particularly as compared to my spritely Rega P3.

Adding to the confusion is my phono preamp - a Sonneteer Sedley, which has all kinds of resistive and capacitance switches for MM/MC carts. I’ve tried about 3-4 settings so far, in the ballpark for a high output MC cart, but none has remedied this basic "sluggishness".

Can you kind folks help me diagnose this? Is the cartridge definitely kaput? If so, can it be repaired? Is it possibly a tracking/force issue?

I won’t bore you with the Sedley’s switches and X5’s technical specs unless it comes to that...

pupil
Dear Al (and others),

So the major switch to 47ohm made a night/day difference. The cartridge and table now sound like they should, barring some minor adjustments.

One question though: so far in my experimenting, it strikes me that the cartridge sounds best - most "open" - with NO capacitance loading engaged. Should I continue to experiment here? I ask because the manual explicitly states that zero capacitance is not recommended.

In the meantime, I've ordered a Shure force gauge to help me re-calibrate the cartridge from scratch.
Excellent!

Regarding capacitive loading, with the possible exception noted below I would ignore that statement in the manual and go with whatever sounds best to you. As I mentioned earlier the capacitive load applied to the cartridge will include the unknown capacitance of the phono cable and tonearm wiring (which is undoubtedly substantial, quite likely 150 or 200 pf or so), as well as the input capacitance of the phono stage (which is certainly not zero even when the so-called zero setting (all of the capacitive loading switches in the up position) is selected. Chances are the "zero" setting is a few tens of pfs.

And the "<500 pf" load capacitance recommendation in the specs for the particular cartridge is not specific enough to be helpful, as of course it could mean anything between 0 and 500 pf.

The exception I referred to is that perhaps the statement in the manual is based on a possibility that setting all of those switches to the up position might somehow adversely affect the sonics of the phono stage circuitry itself, although I can't envision how that might be the case. But **if** you don’t find the sonics of the zero pf setting to be noticeably better than the lowest possible other setting (10 pf) I suppose you might as well use 10 pf.

Enjoy! Regards,
-- Al
I am very much indebted to you, Al, for your thoughtful and very generous assistance.

Thank you! 
As always Al is a gentleman and a fount of knowledge.
He has saved myself many a headache and potential damage over the time I have been a member here.

It sounds like you got yourself a bargain as the cart appears to be good now you have tweaked the setup.
Enjoy.
Thanks for the nice words, gentlemen.  Glad I was helpful.

Best regards,
-- Al