is a rsl a rogers speaker?

Probably not - Rogers Sound Lab was a retail chain in California many years back. They made a proprietary line of speakers, many of which were very good. But the sound is a lot more old school JBL then traditional British

No. Rogersound Labs was a Southern California based speaker manufacturer that manufactured pretty good mid-fi speakers. They then got into equipment sales, expanded too fast, took on too much debt and went under. They were not related to Rogers.

No it isn't. Rogers Sound Labs was a small chain of stores in so. cal a few years back. I remember them selling a lot of refurbished items.