That was the last format for the AM station produced at the South Streets studios with WCRB-FM and under the same original ownership. All subsequent formats on 1330 (beginning in the early '80s with WDLW "Boston Country") were with a succession of different owners from different studio locations.
WRCA's current studios are in Central Sq Cambridge. I believe that more than a decade ago, while WRCA and WLYN were co-owned (by Peter Arpin, I believe), they shared the Central Sq location. But aside from South St and Central Sq, where else has 1330 had its studios?
WDLW, "Boston Country" for most of the 1980s, was from studios on Winter St. in Waltham, a few miles north of South St.
When WDLW flipped to WRCA in 1990 in AM Stereo with a short-lived "show-biz" format (music from Broadway musicals and film soundtracks, comedy, etc... with live, local personality hosts including Jim Sands and Marcia Masters), the studios were, at first, in One Kendall Square, Cambridge.
When that format gave way to brokered programming within the next couple of years, WRCA moved to its current Central Square location.