Cartridge Suggestions for a Black Widow Tonearm

It is also not particularly rigid if I remember, I would stay with MM. MCs generate considerably more energy in tracking so they are best used with either a high mass or rigid lower mass arm. The Grace 707 worked well with some MCs despite having a 6 gram mass but off the top of my head I think the BW is more like 4. As Nsgarch said you can look it up but with this arm I think you will find MM works better

Looking at the best test of the arm I have it appears that at least 3 different arm tubes were offered: originally carbon fiber, then metal , than carbon fiber reinforced by graphite fibers. The last is the one I remember as the mass was 4.25 grams. They found that it was quite stiff in the bending mode but torsional stiffness was quite poor. They also found that the anti skate was 30% high so a reduction might give better results. The tracking weight adjustment was right on and the arm geometry was excellent. The add that " Additional mass might be worth adding with some low compliance cartridge types, e.g. moving coils". I would add the mass if I were using low compliance ones. The views on proper mass are quite divergent, I was on another thread where one poster insisted that low compliance MCs needed something like 30 grams to work well. The general consensus is that arms like the BW are better with MM but you can use MCs, the cartridge police will not come for you. I use to ride in a bicycle club where one member rode a mountain bike with road bike tires, it suited him and worked although it looked a little strange.