K3 and BOSE Companion 2 Series III speakers.

[LA6SK]

My K3 and KPA500 and KAT500 work very well with my BOSE Companion 2 Series III speakers with no RFI from 160-6m. But  does anybody know if these speakers will work OK on 13.8VDC in stead of 12VDC?
Borre/LA6SK