Do you have the JD9 dip switch chart?
Hi, dll,That chart at AudioKarma was the first version I created but it didn't include my name, the model of JD9 that it references, or that some settings are undocumented. An updated chart for the 2006 model is available here: https://gallery.audioasylum.com/cgi/view.mpl?u=32746&f=jolida_jd9_settings1.jpg&v=f&User...
The newer JD9 II has been modified somewhat from the original version but I'm not sure what differences (other than cosmetics) are involved. Jolida does not appear to include specific information on gain settings in their manual
Ortofon provides information for the 2M Black on their website:
- Output voltage at 1000 Hz, 5cm/sec. - 5 mV
- Recommended load resistance - 47 kOhm
- Recommended load capacitance - 150-300 pF
Based on those specifications I'd start with these settings:
- Low output (MM) connections, gain set to ~50 dB
- Impedance/resistance set to 47,000 Ohms
- Capacitance set to 150 picoFareds
Don't forget to add in the capacitance of the phono cables. The phono pre is seeing both the cable and cartridge capacitance. Beyond that you should set it by ear after picking your starting point. BTW, even though it is not stated by Jolida, the capacitance setting of the JD-9 can be set to zero (I confirmed this with Jolida in the past). A cart such as one of the Clearaudio ebony wood series that have a spec. of 100pf would need a setting from zero to 100pf depending on personal preference. The cables won't be zero and hopefully will be less than 100pf.
Sorry, I misstated the idea. After re-reading the info for my Chinook pre, their example takes a cart spec'ed at 150pf and subtracts the cable rating, say, 90pf resulting in 60pf. So the start point in the example would be either 47pf or 100pf in the case of the JD-9. Using 300pf and 90pf would result in 210pf at the high end. So, just about all of the settings of the JD-9 cover your cartridge. This shows that you should try most of the settings and pick the one that you like best.