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: Minivan
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | custom build location, zero-cargo-impact (exact location not specified in the source build beyond 'through the front piece into the rear chamber') |
|---|---|
| Outer bounding box | Not independently confirmed — inferred from the ~1.25 ft3 net build already documented in this entry |
| Known obstructions | None specifically documented |
| Usable volume estimate | 1.25 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x8" small sealed |
|---|---|
| Box type | sealed |
| Location | custom zero-cargo-impact location |
| Subwoofers | 1x10" or 1x12" sealed, ~1.25 ft3 (real example above), or 1x10" under the front passenger seat (real documented Rockford Fosgate build, requires a 1" seat raise) |
|---|---|
| Box type | sealed |
| Location | custom zero-cargo-impact build (rear) or under front passenger seat |
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" — but genuinely thin factory unit; standard-thickness aftermarket 6x9"s won't physically fit without an adapter, a smaller/thinner replacement (e.g. 5.25"/6.5") is the practical path |
|---|---|
| Known obstructions | Factory speaker's thinness is the real constraint, not the cutout size |
| Adapter bracket needed | yes |
| Tweeter | Integrated into the 90mm midrange units (dash/door locations); real, distinct note: sliding-door tweeter locations on the Alpine/HK system can be adapted to fit 3.5" aftermarket drivers using a Metra 72-7902 adapter. |
| Midrange | 7 total GreenEdge midrange units distributed across dash/doors (Harman Kardon tier) |
| Factory speaker size | 6x9", same thin-factory-unit caveat as the front |
|---|---|
| Known obstructions | Same thinness constraint as front doors |
| Adapter bracket needed | yes |
| Tweeter | Sliding doors (Alpine/HK system) — a genuinely different tweeter location than the A-pillar pattern seen on our Chrysler 300/Cadillac Escalade entries. |
| Midrange | n/a — the 7 GreenEdge midrange units are confirmed dash/front-door distributed, not rear-door |
| Factory amp / premium audio | Real, precise, manufacturer-sourced tier breakdown: a 20-speaker Harman Kardon GreenEdge system is available on Hybrid models, while a 19-speaker Harman Kardon system is available on 2021+ gas models specifically (not the full 2017-2024 span) — a genuine powertrain/model-year-specific speaker-count split, not one universal HK spec across this entry's whole range. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward — the real build found doesn't touch the head unit |
| Head unit | No replacement needed |
Real builder-documented philosophy matching the Grand Caravan's pattern: preserve cargo/seating flexibility above all else. Specific real build: double-laminated 3/4" MDF baffle construction, sub mounted through the front piece into the rear chamber, ~1.25 ft3 net internal volume after polyfill stuffing, explicitly built to have ZERO impact on cargo space.
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.