How do they sound? THREE 13 Subwoofers Underseat! Installed & Tested @CarAudioFabrication
How do they sound? THREE 13 Subwoofers Underseat! Installed & Tested  @CarAudioFabrication
Uploaded April 2025 | Updated September 2026, 1 hour ago
We've been building a custom underseat subwoofer enclosure for these three 13" subwoofers. Now that the build process is complete we can install and test! How does this truck subwoofer box sound? Let's dive in!

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How do they sound? THREE 13" Subwoofers Underseat! Installed & Tested

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