I've been working with oldcrow here on the forum to try and nail some Clapton Blind Faith era tones.
Posted 8 profiles of the Marshall JTM50 to the rig exchange. These are not meant to be spot on tone replicas, but I think are pretty decent profiles to tweak and adjust as needed.
Profiles are done with the normal and brilliant channels jumpered. Normal channel is at 7 on all of these.
Naming convention shows the volume level for each channel. If there's an * at the end, it means the brilliant channel was in the hi input, otherwise it's the low input.
Let me know how they work.
thanks,
sean