Adding a subwoofer to your truck without losing storage space is possible with the right under-seat compact sub. Here are the best options.
Why Under-Seat for Trucks?
Full-size trucks have limited space for subwoofer enclosures. The under-seat powered sub format is ideal because:
- No box to build or buy separately
- Self-contained amp — no separate amp needed
- Easy installation — signal in, speaker wire to brackets
- Takes up space you weren’t using anyway
Top Under-Seat Sub Picks:
Budget ($80-120):
- Rockford Fosgate PS-8 – 150W RMS powered 8", compact enclosure at 4.5" tall. Fits under most truck front seats.
- Bazooka BTA8100FH – Tube-style 8" powered sub. Simple installation, decent bass output.
Mid-Range ($150-250):
- Kicker PSYCLE 8 – Kicker’s compact active system with surprising low-end extension for its size.
- JL Audio Stealthbox – Vehicle-specific Stealthbox for select Silverado models. Premium price, seamless integration.
Premium ($300+):
- JBL BassPro SL2 – 11" shallow-mount powered sub with 125W amp. Exceptional quality from JBL.
Signal Connection:
Use the preamp outputs from your head unit if available. For the Kissound 7" Double DIN, the subwoofer preout connects directly to any powered sub with RCA input.
If keeping the factory radio, a $20 LOC (line output converter) taps the speaker wires.