The Decca London had a top that could be removed by sliding it off the cartridge body. Then you had access to a platform that fixed the position of two of the coils using two set screws that if re-set in unison could move the platform up or down. By pure ignorance, I and a friend converted our stereo Decca London cartridges to mono, simply by maladjustment of that platform. No modern cartridge that I know about would by its construction permit the user to do such a thing. Funnily, both of us thought we had improved the sound, until we each separately realized what we had wrought.
Stereo cartrdge now playing mono!!
My Hana SL (after a move to a new house only gives me mono! I have double checked the phono equalizer and connecting pins. At present I am just listening off the phono equalizer which reproduces normal stereo with another source.Any ideas?