I need to replace the headphones on a radio/tape player that I've had for about ten years. While I'm sure I have the owners manual, I haven't a clue where it might be. I bought some replacement headphones today that were 16 ohm. I figured that they were as standard as the old 8 ohm ones were of old. When I got home with them I discovered that each the right and left speaker of the old earphones have 24 ohm marked on them. In the store I only noticed 16 ohm and 32 ohm, so I am at a loss as to what I should do. Any suggestions? Do you add the resistance of each together and with the ones I have get 48 ohms? I am kind of thinking that the 24 of each still gives 24 ohms. Hm?