Good morning and welcome, Neptuneslair!
You're making a good choice in going with some Carver equipment to play through your JBL L150's. They're a great match!
My very first encounter with Carver and JBL was with my oldest brother who just came back home from the Army (and which ultimately started my journey into hifi and music at the ripe ole' age of 9). He came back from Germany with a Carver C-1 preamp, TX-11 tuner, an M-400t (small cube amp) and a pair of JBL L112's, which are the little brother to your L150's, just the bookshelf version without the passive radiator. That very system lit a fire in my heart that still burns mighty strong today, and that was over 30 years ago!
BTW, I just started acquiring my Carver gear within the past few months. Before this, I tried every brand of gear under the sun. Don't ask me why I only now started my OCCD of Carver gear. It makes no sense to me either. LOL