Meet our premium 6.5 car audio OEM Replacement RS65-PRO. Engineered to deliver high performance, these speakers are an excellent choice for audiophiles looking to replace their speakers in any car sound system with (2-Way Setup) speakers and tweeters. Its most common application is to replace speakers in a system with a factory amplifier, which makes it a breeze to upgrade the sound system with only one speaker. This fullrange speaker works great with a factory tuned amp with a set HPF and LPF. They will be a huge improvement compared to the low sensitivity stock speakersFullrange Speaker Designed to reproduce a wide frequency range from 60Hz 18, 000Hz, it can play low midbass punch and high notes, delivering rich, detailed sound.