Trouble Decreasing Treble
To adjust the VTA on the JMW-9 arm you have to first loosen the two setscrews on the round base and then turn the adjustment wheel. Once the desired height is set you then snug up those two setscrews. This is briefly explained is section 7 on page 12 of the manual. By lowering the VTA you should effectively decrease high frequency output, as will lowering the load impedance of the phono stage. Hope this helps! |
@ddemiltio3, With great upgrade come great responsibility, I think Yoda said that. You moved from a really good cartridge, to one that really needs special set up to get the best out of it. Shibatas are particularly finicky, but once you get it setup, it’s excellent. I moved from an Ortofon Bronze 2m and noticed a marked decrease in surface noise, better dynamics and soundstage. So stick with it! |
I would first try "free" changes. At 1k ohm, for the load impedance, you are running the cartridge a little "hot" in terms of treble response. You could try a different loading, including a setting below the 400 ohm setting recommended by the cartridge manufacturer. I would try something around 100 ohms, if that is possible. If the cartridge sounds right with some music, but, not others, you will probably just have to live with some compromise setup. |
''The increased treble'' is well known problem by MC carts. I own Klyne 7 PX3.5 Phono amp with ''High Frequency Contour'' by which one can decrease HF by choice. The values between 15 Khz till 40 Khz can be chosen while the needed switches are marked in the user manual. There is a list with 25 '''well known carts'' with recommended values. I have no idea if other phono-pres have similar provision. My other phono-pre; the Basis Exclusive lacks such provision. |
