I Built a HUGE Sealed Box for Two Skar SDR-18s - You Won’t Believe the Bass!

🛒 Amazon Shopping Links (affiliate): 🛍️ My Amazon Store Front: https://amzn.to/4j3G1gP In today’s build, I’m putting together a massive sealed subwoofer enclosure for two Skar Audio SDR-18 subwoofers and the results are absolutely wild. This box is designed for tight, controlled bass, killer low-end extension, and maximum accuracy without sacrificing output. I walk through the full build process, from design and measurements to construction, bracing, sealing, and the final install. Then we put these SDR-18s to the test with a full music demo, deep-bass sweeps, and real-world listening so you can hear exactly what a giant sealed box can do. If you enjoy car audio builds, enclosure testing, subwoofer experiments, and real-world demos, this video is for you. Thanks for watching and if you’re new here, hit Subscribe for more builds, tests, and loud content. 🔖 Amplifiers: TarAmps Smart 8 Bass: https://amzn.to/3Vkzx2x TarAmps DS 440x4: https://amzn.to/3ZwSUrR 🔊 Door Speakers: NVX® XSP69KIT 6x9" Car Speakers: https://amzn.to/4iatho5 NVX® XQS65KIT 6.5" Car Speakers: https://amzn.to/3BbsbaO NVX® XQS3 3.5" Car Speakers: https://amzn.to/3CQm8Je 🛠️ Tools: SPL-Lab Mini Bass Meter: https://amzn.to/3FG6vDv SMD Tools: https://amzn.to/3Umx8BK PAC Ap4-gm61 AmpPro 4 Amp Interface: https://amzn.to/4f0dUvJ PAC APSUB-GM61 AmpPRO SUB: https://amzn.to/3ZAfxvB ⚖️ DISCLAIMER: This video description contains affiliate links, which means that making a purchase, after following those links, supports the channel. Thanks in advanced and happy shopping. Timestamps 00:00 - Intro 01:58 - Digital Design (WinISD) 05:14 - 3D Modeling (Sketchup) 08:03 - Construction-Assembly 20:06 - Wiring (parallel to parallel) 21:47 - Installation 24:05 - SPL Demo 21:47 - Installation 21:47 - Installation 31:33 - Walk-Around 33:12 - Music Demo #caraudio #skaraudio #bass #subwoofer #speaker