Car Audio Conversion Amplifier Delay Start Delay Time 1-17 Seconds AdjustableDescription:When no audio outputs CD、 tape recorder 、 mp3 player card machine you need to install the power amplifier or powered subwoofer 、 amplifier required audio signal input low-voltage 、 low-voltage audio signal to the amplifier output to the speaker、 then you need to giveThese no direct audio interface converts low-frequency signal interface host installation of high to low 、 so as to install the subwoofer amplifier or a signal interface . High to low to convert a host of high-frequency signals into low-voltage speaker wire audio signal and output through the audio RCA connectors .PartFrom within the hostLeads directly to the low-frequency audio signals to the receiver or use the built-in high power amplifier with speaker wire directly to low -frequency signal input 、 the input amplifier such connection general internal signal voltage is too low 0.05-0.3V、 resulting in a large volume open to the amplifier 、 speakers sound is not loud enough . and leads RCA amplifier input impedance and impedance mismatch 、 prone to signal interference noise. This high to low design 2-channel audio signal voltage is adjustable、 and adapt themselves according to different power amplifier、 suitable for all amplifier and active subwoofer ! Silver full 、 the conversion rate is very small distortion.Without dismantling host interface audio cable 、 only host two -way high-frequency speaker wire input high to low to the general take the original door speaker location and speaker cable connected to the host connection.Package Included:1 X Car Conversion Amplifier Delay