What's a good cartridge for infinity black widow?

I once owned THAT exact combo, in my Dahlquist days,and really enjoyed it.Go for the Blue Point,as the "Widow" likes that kind of cartridge.

Best of luck

Actually- The weight of the cartridge is not what's important. The Black Widow is a VERY low effective mass arm, and needs a high-compliance cartridge. The Blue-Point(at 12x10-6cm/dyne) is considered a fairly low compliance cartridge. Here's a good treatise on compatibilty: (http://www.gcaudio.com/resources/howtos/tonearmcartridge.html) But then- That's science and physics, which don't ALWAYS apply when it comes to audio.

This site has a formula that you may find useful: (http://www.theanalogdept.com/cartridge___arm_matching.htm)

Shure V15 was made for that tonearm. My friend has that combination and it sounds great