Force-Read-Speed -- Does It Work?

I don't seem to be able to make cdparanoia force the read speed. The 
value I use for -S seems to have no effect whatever. I'd like to force 
the rip to go no faster than single speed, but whether I specify 1 or 
48, the ripping goes at the same speed (the drive is 52x, and I also 
tried 4, 8, 16).

thanx