voidstar78
Veteran Member
I think "center negative" may have been a more common convention for music device accessories (pedals?) or maybe more of a European convention? (this is just based on observations on eBay - I see various "center negative" adapters with European style connectors, but nearly all the 120V US-based adapters are "center positive").
You can find "polarity inverter" adapter cables, or just splice and swap the two wires of the adapter yourself.
They do each have the same 6V DC option. That's consistent with the battery operation (4x 1.5V batteries = 6V). So they can be used in direct DC, such as in a car - except a car is a 12V system, so you still need some kind of 12V to 6V DC/DC adapter.
You can find "polarity inverter" adapter cables, or just splice and swap the two wires of the adapter yourself.
They do each have the same 6V DC option. That's consistent with the battery operation (4x 1.5V batteries = 6V). So they can be used in direct DC, such as in a car - except a car is a 12V system, so you still need some kind of 12V to 6V DC/DC adapter.