Speaker system and Speaker unit

Speaker system noun - Electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance.

Speaker unit is a synonym for speaker system in speaker topic. In some cases you can use "Speaker unit" instead a noun phrase "Speaker system", when it comes to topics like loudspeaker.

Speaker unit noun - Electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance.

Speaker system is a synonym for speaker unit in speaker topic. You can use "Speaker system" instead a noun phrase "Speaker unit", if it concerns topics such as loudspeaker.