What we researched for this specific generation: where an enclosure actually fits, what the factory speakers are, how the factory audio is wired, and which real builds and commercial products exist for it. Confidence badges say how well each figure is sourced — this is research, not manufacturer spec.
Body styles covered: 4-Door SUV
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | cargo area (retailer-measured, promoted from existing notes) |
|---|---|
| Outer bounding box | 41"W x 15"H x 37"/35"D. Vehicle-specific enclosure catalogues; published box footprints are lower bounds on the cavity, not the cavity: Audio Design SCG 'Jeep Grand Cherokee Subwoofer Box | Phantom Fit Enclosure': 14 x 14 x 14 in (as printed; axes not labelled) [only 2011-2018]. |
| Known obstructions | Under-floor storage and cargo tie-downs exist and should be preserved — the JL Stealthbox is explicitly designed to not interfere with them, a constraint for any custom build in the same area. Jeep's 2014 press kit describes a grated, protective cargo floor with a dedicated spare tire space underneath "containing two removable bins" — the under-floor storage above. No dimensions published. |
| Usable volume estimate | 6 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" sealed (direct-fit Stealthbox-style) |
|---|---|
| Box type | sealed |
| Location | passenger side rear corner, factory-location style |
| Subwoofers | 1x10" or 1x12" custom fiberglass |
|---|---|
| Box type | sealed |
| Location | left side over wheel well or custom stealth build |
Sizes and depths below are what research turned up for this generation. Confirm against your own vehicle before cutting or ordering — trim levels vary.
| Factory speaker size | 6x9" with 1" tweeters. Confirmed 2-tier premium system: Alpine (9-speaker) and Harman Kardon (higher tier, named full component set: tweeters, center channel, D-pillar speakers, woofers, subwoofer, amplifier). |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | Important integration caution on the tweeter location specifically: no mounting bracket exists (owners use hot glue, silicone, or universal backstraps) and no wiring harness adapter exists (requires splice/solder or speaker connectors) — the same 'no adapter for the tweeter spot' pattern already found on our Cadillac Escalade and Dodge Durango pages. |
| Tweeter | Front doors, alongside the 6x9" woofer |
| Midrange | n/a — 2-way woofer+tweeter door layout on Alpine; Harman Kardon adds a separate D-pillar speaker location instead of an in-door midrange |
| Factory speaker size | 6.5" (general); precise Harman Kardon-specific spec found: 6-3/4" woofer + 1.483" tweeter. |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | Rear doors, Harman Kardon trims |
| Factory amp / premium audio | Exceptionally detailed year-by-trim breakdown — one of the most precise findings. Alpine was the early premium system (2011 and prior years of this generation). Harman Kardon then phased in trim by trim, not all at once: SRT got it 2012-2020 (optional), Summit got it 2014-2020 (STANDARD, not just optional), Overland got it starting March 2015 through 2020 (optional — note the mid-model-year start, a real production-date boundary, not a clean model-year line), and Trackhawk got it 2018-2020 (optional). Base/Laredo/Limited status not confirmed. This is real enough precision to design a build recommendation around specific build dates, not just trim names. Jeep's 2014 press kit: the Summit's Harman Kardon is "a 19-speaker, 825-watt high-performance Harman Kardon surround sound audio system" with "9 tweeters, 5 mid-range speakers, 2 mid-woofers, 3 subwoofers" and a 12-channel Class D amplifier. Three factory subwoofers: the JL Stealthbox in reference builds "replaces the OEM subwoofer" in the passenger-side rear cargo panel, i.e. a swap for a single factory sub — whether it suits the three-sub Harman Kardon cars is not stated. |
|---|---|
| Adding subs without a head-unit swap | Straightforward — the JL Stealthbox's direct-fit factory-location design confirms a standardized, bolt-in-friendly anchor point exists |
| Head unit | No replacement needed |
Measured cargo area: 41"W x 15"H x 37"/35"D (retailer-quality data, comparable to the Crutchfield-sourced Tahoe numbers). JL Audio sells a direct-fit Stealthbox: sealed 10", installs passenger side rear corner, explicitly does not interfere with under-floor storage or cargo tie-downs. Custom fiberglass option for 2014-2023 WK2 runs ~1.3 ft3.
Outside links. Some are commercial products, some are owner builds posted on forums — the label says which. We do not endorse any of them.
Each link opens the tool with this vehicle already selected.
Measure your own vehicle. Trim levels, factory subwoofer options, and mid-generation changes all move these numbers, and a box cut to a researched figure that does not match your truck is wasted wood. Where a badge reads Unconfirmed, treat the value as a starting point for your own measurement, not as an answer.