What kind of speakers are in a 2000 Chevy Malibu ls?

The 2000 Chevy Malibu LS typically came with standard, factory-installed speakers. They weren't high-end; they were basic speakers designed to meet the minimum requirements for the vehicle. There's no specific model number readily available for all trims, as it varied slightly from year to year. They were generally 4" or 5.25" speakers in the doors and possibly a smaller set in the dash, depending on the specific options package. Expect nothing particularly sophisticated in terms of components.