Burn-in CD

Would the Purist Audio burn-in CD have an effect on burning-in new speakers ( Von Schweikert VR-4 JR in my case).,that will be different from simply playing music. Manual recommends playing LOUD rock music for 250-300 hrs., and reducing this time to 6 hours certainly sounds tempting. So I'm wondering if the burn-in CD can deliver on it's promise to achieve the same (supposedly) effect in just 6 hours. I could possibly understand it's effect on the other system components, but for the speakers? Please share your thoughts and experiences. Regards.