Custom Subwoofer in Cadillac CTS Wagon

Custom subwoofer box made in the trunk of this 2010 Cadillac CTS Wagon with a slotted spot for the OEM air pump.

After the spare tire components and accessories were removed, our sub box fabricator made a perfectly fitting, circular box with a space, or slot, integrated into the box that holds the original OEM air pump. After the wood box was made and fit, it was then carpeted and installed.

As the new Alpine 12″ R Series subwoofer faces up, there is some space between the original floor and the speaker deck, that was previously there to hold drivers tools and other accessories. But with the subwoofer there now, that space was used for air, and a new trunk floor had to be made to account for the upward firing speakers and air flow.

The floor has 2 rectangle holes for air flow for the speaker and protected with metal gates (for strength) under the carpet protecting the speaker from anything sitting on the floor of the trunk.

Custom floor made with vent hole you cant see was the last thing to install.

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Custom Subwoofer in Cadillac CTS Wagon