Alpine speakers are organized into various lines, but from their entry level to pro audio lines their speaker design and sound quality never fail to impress. Alpine's Type-S series full range and component systems will give you the most bang for your buck, and are ideal for replacing your factory system speakers.  The S-series component sets and coaxials feature a silk dome tweeter.  The Type-R series Alpine speakers can handle more wattage, and put out high quality sound reproduction.  Type-X component speaker sets are made from the highest quality materials and are manufactured to provide incredible lifelike sound.