Hopefully I can help... I should know a few things about this (having worked with Bobby/Merlin as a Merlin dealer and consultant if you will to the company). The stickers on the back are custom made lettering which while can be removed, unless you have the letters you can not add to it.
TSM's were made for about 20 years....
Early models were not available in clear coat finish and had the Edison Pirice copper binding posts on the back (TSM-RC,). The Cardas posts started being used in the late 90's
Later versions (maybe not in exact correct order - this is off the top of my head so excuse me if I miss a version ): TSM-SE, TSM-M or Me, TSM-MM TSM-MX, TSM-MXE TSM-MME, TSM-MMM TSM-MXM, TSM-BM.
Some of the model designation differences where just to notate between studio black finish (MMM, MME ...) from the clear coat finish versions (MXM, MXE etc) of the speakers.
Changes made over the years included refinements/changes to the internal wiring, crossover parts used, driver changes (Renaissance audio tweeter in later models), changes in cabinet material (always MDF, but different formulations from certain manufacturers) .
TSM's never used or came with the BAM - that was specifically designed/made for the VSM.
Rich Brkich
Signature Sound
TSM's were made for about 20 years....
Early models were not available in clear coat finish and had the Edison Pirice copper binding posts on the back (TSM-RC,). The Cardas posts started being used in the late 90's
Later versions (maybe not in exact correct order - this is off the top of my head so excuse me if I miss a version ): TSM-SE, TSM-M or Me, TSM-MM TSM-MX, TSM-MXE TSM-MME, TSM-MMM TSM-MXM, TSM-BM.
Some of the model designation differences where just to notate between studio black finish (MMM, MME ...) from the clear coat finish versions (MXM, MXE etc) of the speakers.
Changes made over the years included refinements/changes to the internal wiring, crossover parts used, driver changes (Renaissance audio tweeter in later models), changes in cabinet material (always MDF, but different formulations from certain manufacturers) .
TSM's never used or came with the BAM - that was specifically designed/made for the VSM.
Rich Brkich
Signature Sound