I referred back to this thread last night when I was getting started with my new-to-me Beseler 23C II and got some very different results. I'm wondering what I might be doing wrong.
After doing a series of test strips with a single image, I got to where the correct exposure was 2s @ f11. The other prints I made last night were mostly 1-2s, some under 1s. I don't know if this enlarger uses an unusually bright bulb or what the deal is. Any suggestions as to what might be different with my setup that's not giving me 20-30s to work with? Is there an assumption of filters being used or something?