![Subwoofer not putting out much sound after new headunit. It worked on my last one. Put in an Atoto A6PF, it had only one sub out so I used a RCA splitter. Subwoofer not putting out much sound after new headunit. It worked on my last one. Put in an Atoto A6PF, it had only one sub out so I used a RCA splitter.](https://external-preview.redd.it/subwoofer-not-putting-out-much-sound-after-new-headunit-it-v0-ERPfm_c1guwwGX4IZbKRNtDncBQTD7YPA01kXCMkBes.png?format=pjpg&auto=webp&s=7b005069c1e31b8fc031fe5ca7ca0b2fa60ebbdf)
Subwoofer not putting out much sound after new headunit. It worked on my last one. Put in an Atoto A6PF, it had only one sub out so I used a RCA splitter.
![Car Audio Help - How to Troubleshoot an Amplifier and Subwoofer - Check Power and Ground - Bright Hub Car Audio Help - How to Troubleshoot an Amplifier and Subwoofer - Check Power and Ground - Bright Hub](https://www.brighthub.com/ezoimgfmt/img.bhs4.com/ee/7/ee792694aaec4a814cfbb6fc0e9884a91fdcc20a_large.jpg?ezimgfmt=rs:390x344/rscb1/ngcb1/notWebP)
Car Audio Help - How to Troubleshoot an Amplifier and Subwoofer - Check Power and Ground - Bright Hub
![Amazon.com: Planet Audio P8AWK Low Profile 8 Inch Under Seat Powered Car Subwoofer - 800 High Output, Built-in Amplifier, for Truck, Boxes and Enclosures, Remote Subwoofer Control : Electronics Amazon.com: Planet Audio P8AWK Low Profile 8 Inch Under Seat Powered Car Subwoofer - 800 High Output, Built-in Amplifier, for Truck, Boxes and Enclosures, Remote Subwoofer Control : Electronics](https://m.media-amazon.com/images/I/81EPzKQaWjL.jpg)