Speaker sizes of a Nissan Sentra 1996?
The 1996 Nissan dashboard speakers measure 4.5 inches in diameter. The front door speakers measure 5.5 inches in diameter. The rear speakers measure 5.5 inches in diameter.
My 96 Nissan sentra has 6.5" speakers. i just replaced them last week. i don't know how much watts it can take. it depends on the speakers.. not on the car. Try to use the Nissan speaker adapters plugs so you don't need to cut wires and mess up the electric system, you can get those from eBay or amazon.