I was told the exact same thing on Friday, when I ordered a set of Thomastik POWERBASS strings. I spoke with Mr. Kevin Reynolds of Connolly & Co; who is the USA distributor for Thomastik-Enfeld, in NY. Mr. Reynolds told me that if I wanted to really hear the tones that ALEMBIC will produce, I would have to use the JAZZ FLATWOUNDS, which he HIGHLY recommended.
Well, I picked up my POWERBASS strings this morning @ approximately 11:30 EST, so I'll have to wait until these go flat before I can try the JAZZ FLATWOUNDS...