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 Sedan
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | rear deck, free-air (factory location) or trunk, custom sealed |
|---|---|
| Outer bounding box | Not independently measured — high-end documented reference build: ~5 ft3 sealed for an 18" driver |
| Known obstructions | Factory sub is free-air (unenclosed), a different mounting philosophy from the sealed/ported factory subs found on most other vehicles covered here |
| Usable volume estimate | 2 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" factory-location free-air replacement |
|---|---|
| Box type | free-air (factory-style) |
| Location | rear deck |
| Subwoofers | 2x10" sealed (JL TW3) or 1x12"/18" high-end custom, leather-finished to match interior |
|---|---|
| Box type | sealed |
| Location | trunk, custom |
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 | 165mm (6.5") mid-bass — confirmed real spec for the base audio system |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a in the door — real, confirmed DASH-CORNER mounted (25mm/1", in grills at the dash corners near the A-pillar/windshield, not inside the A-pillar itself) on the base/Harman Kardon system. A separate, higher Bowers & Wilkins Premium Surround tier instead uses 3x 25mm tweeters at the CENTER and SIDES of the dash — a real, distinct tier-specific layout, not the same simple dash-corner pair. |
| Midrange | n/a — no separate front midrange confirmed beyond the 6.5" door mid-bass driver |
| Factory speaker size | 165mm (6.5") mid-bass, same as front — real genuine OEM front/rear door speaker part confirmed to exist |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | IN THE REAR DOOR — real, confirmed 25mm/1" tweeter, a genuine real front/rear architecture difference: front tweeters are dash-corner mounted (NOT door-mounted), while rear tweeters ARE integrated into the rear door itself. |
| Factory amp / premium audio | Harman Kardon available as the factory premium system on this platform (Maserati is one of Harman's badge partnerships, alongside BMW/Jeep/Chrysler) |
|---|---|
| Adding subs without a head-unit swap | Confirmed real activity exists — multiple forum threads document successful aftermarket sub installs alongside the factory system |
| Head unit | No replacement needed |
Factory subwoofer is a 10" free-air unit hanging down from the rear deck in the trunk — a real, distinctive factory mounting approach (free-air, not enclosed) worth noting since it differs from the sealed/ported factory subs found on most other vehicles covered here. Real aftermarket builds exist despite the exotic/luxury positioning: a pair of JL Audio TW3 10" drivers (400W, dual 4-ohm) in a sealed enclosure for 2014-2016 models; a JL 12W6v3 + Arc Audio 1100.1 amp (600W RMS @ 2-ohm) documented install; and an extreme enthusiast build using an 18" driver in a ~5 ft3 sealed box, finished in Dynamat sound deadening plus 6mm neoprene and BLACK LEATHER to match the car's interior quality — a genuinely notable finish-quality detail distinct from anything else (most builds use carpet, not leather).
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.