sub box

Hey all! We are clearing out our first versions of our Tubthumper for the R1T. Our new design recesses the subwoofer into the box to limit the chance of the seats hitting the sub. These older designs do not recess the subs. (Most Rivians don't have that issue but about 5-10% do. ) Here are the...

Note: if not using the Y-RCA splitter. Connect the OEM adapter to the white input on the amp. First link: https://soonishev.com/products/soonishev-r1s-tubthumper Second! We are sorry this took SO FREAKING long to get out to you guys. It was an extremely annoying process to get these in our...

Rivian Subwoofer Installation Kit https://soonishev.com/products/soonishev-subwoofer-enclosure-box-and-wiring-the-tubthumper We like to call this "The Tubthumper." As car guys who like nice sounding audio, even the Meridian systems in our launch edition R1Ts felt... lacking. As it turned...