I have an old Centurion universal AC/DC adaptor (Model EA10), that I want to use with my CD and audiotape players. But I seem to have lost the manual. Its specs are:
INPUT: 120V 60 Hz 12 W OUTPUT: 3,4,5,6,7.5,9,12 V CURRENT: 500 mA
What should I set the Volt Change Switch to? Thanks.