I've been using Meguires Next Tech 2.0 was with my Dynaudio C1 sigs and Raidho D2's without problem. That said if you do use car wax make sure it's just wax and NOT a cleaner wax. I also use a high quality microfiber cloth. It takes away swirl marks too. Sometimes I also use a quick detailer like Mothers and Meguires. Turtle wax Liquid Ice was recommended by Dynaudio.
