For anyone concerned about the upcoming TF 1.5K having too much power…the volume knob is your friend; benefits far outweigh excessive power concern, imo.
I owned the TF 3K at length (sold—enclosure too large/didn’t need the second channel) and currently have a high powered Bergantino Ultra. They both work fabulously with even a single 112, 210, etc cab, and benefits are realized even at lower volume. The higher power dynamics/liveliness is truly something special…perhaps a paradigm shift/you just need to experience for yourself—let your ears guide volume.
Multiple times, I’ve heard a pro TF endorser play thru his TF 3K with 2x TF112’s in a very familiar venue…3K made such an improved difference—most dynamic bass tone I’ve ever heard there!
I don’t have any additional info about the TF 1.5K other than what’s been posted…but the last thing I’d be concerned with…too much power. For sure, I’d be welcoming it, based on my experiences. : )