Can I connect speakers which are not active, to my active subwoofer? In other words can the subwoofer's integrated amplifier also drive speakers? - Quora
Car amplifier installation guide
Connecting a Subwoofer to an Amplifier — NVX
How to connect subwoofer to the Amplifier without LFE or Sub Out? - YouTube
How to Install Subwoofer and Amp In Any Lexus | Car Audio Power - YouTube