All MTI Acoustics enclosures are made to order, at time of order. Please be sure to include all necessary information on the final page of checkout. This Stage 2 enclosure will ship within 15-20 business days of your order date. Lead times can be impacted if proper/complete information is not included in your order notes. Thank you.

Want some great sounding bass in your GMC Sierra 1500 Crew Cab and want your subwoofer enclosure to look great? The MTI Acoustics Stage 2 Under Seat Enclosure is the perfect solution!

Standard features include:
-Black Katzkin perimeter wrap.
-3/4" MDF construction.
-Rounded edge design.
-Smooth, unobstructed front panel.

Available upgrades for your Stage 2:
-Double stitch line around top edge.
-Acrylic insert with OEM badge of choice.
-Ported enclosure. No more than (2) 10" subwoofers without using a 2.5" (or more) seatlift.
-SMD TCR-1 Upgraded Speaker terminal for use with higher power amps.
-Premium leather, see notes for models that will need this upgrade for proper matching.
-Internal damping. This closed cell foam aids in killing any unwanted resonance within the enclosure.
-Upfire design, which allows for a deeper subwoofer to be used.
-Storage "cubby" when running a single sealed subwoofer. Sizing of storage dependent on subwoofer being used.

Enclosure Depth

-Maximum downfire subwoofer depth (without use of a seat lift)
3.5".
-Maximum downfire subwoofer depth (with use of LMI 1425GM)
6".
-Maximum downfire subwoofer depth (with use of LMI 1435GM)
7".
-Maximum upfire subwoofer depth (without use of a seat lift)
4.5".
-Maximum upfire subwoofer depth (with use of LMI 1425GM)
7".
-Maximum upfire subwoofer depth (with use of LMI 1435GM)
-8".

All enclosures are designed to be used without a floor mat/ floor liner. Use of any sort of mat can impact fitment.

Due to the custom nature of this item, all sales are final, without exception.

Comes standard with Black Katzkin