0:472:35ClassicCarStereos - High Level Input Installation - YouTubeYouTubeStart of suggested clipEnd of suggested clipMake sure you maintain polarity positive to positive negative to negative and reference the legendMoreMake sure you maintain polarity positive to positive negative to negative and reference the legend on the amp telling you what goes where. The other option is if your amp as panel mounted RCA jacks.
Speaker level inputs are used when you want to connect an amplifier to your factory radio or an aftermarket radio that does not have low-level (RCA) inputs. It allows you to use the signal coming from the speaker outputs as an input source for the amplifier.
What is a high level input? High level inputs means that you are using the speaker wire leads off of the back of the radio instead of using the RCA connections. You can take the speaker wire connections and use them to send the input signal to the amplifier.