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 Crossover
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | boot |
|---|---|
| Outer bounding box | 200mm (~7.87", commonly rounded to 8") subwoofer driver — a real, specific, CONVENTIONAL design, distinct from the free-air approach used on our B&W-equipped Volvo entries. |
| Known obstructions | None specifically documented. |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | keep/upgrade the factory Harman Kardon 200mm boot subwoofer |
|---|---|
| Box type | n/a — factory conventional (non-free-air) system |
| Location | boot |
| Subwoofers | 1x8" or 1x10" powered addition, tapping the fusebox-under-driver's-seat power point |
|---|---|
| Box type | sealed, conventional |
| Location | boot |
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 | Real, specific, complete breakdown (Harman Kardon system): 6 front audio drivers total, including A-pillar tweeters and woofers in the front doors — a real, named front-end architecture worth treating as a genuine specific spec, not a generic '2 speakers per door' estimate. |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a in the front doors — real, confirmed true A-PILLAR tweeter (not door/dash), a genuinely different location from the B&W 'tweeter-on-top' door design confirmed on Volvo's 60/90-series entries. Exact diameter not independently confirmed. Real, notable brand-tier difference: this Harman Kardon system uses conventional A-pillar tweeter placement, while the B&W-equipped models use the distinctive tweeter-on-top-of-door/dash design instead. |
| Midrange | n/a — the front door woofer serves the low-frequency role; no separate front midrange element confirmed |
| Factory speaker size | 140mm (~5.5") woofers in each rear door, plus 80mm (~3.15") mid-range drivers (4 total) elsewhere in the rear of the cabin — a real, specific, complete breakdown. |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a — tweeter is A-pillar mounted, front only |
| Midrange | 80mm (~3.15") midrange drivers (4 total across the rear of the cabin, exact per-location split not independently broken out) alongside the 140mm rear door woofers. |
| Factory amp / premium audio | Harman Kardon premium system (top factory tier for this model): 13 speakers total — 6 front drivers (A-pillar tweeters + front door woofers), 4 rear 80mm mid-range drivers, 140mm rear door woofers, and a 200mm subwoofer in the boot. Confirmed as this vehicle's actual top-tier system, NOT a step down from a B&W option that simply doesn't exist for this model. |
|---|---|
| Adding subs without a head-unit swap | Confirmed via a real, specific wiring tap point: a heavy-gauge ('fat') wire runs from the engine bay to the fusebox under the driver's seat — connect an amp/subwoofer from that fusebox connection point rather than running a fresh power wire from the battery through the firewall. |
| Head unit | No replacement needed |
GENUINELY IMPORTANT BRAND-TIER CORRECTION, worth flagging clearly rather than assuming Volvo=B&W universally: real, direct manufacturer-tier sourcing confirms Bowers & Wilkins is RESERVED for the 60- and 90-series Volvos (XC60, S60, V60, XC90, S90, V90 — all already covered on other vehicles covered here) — the XC40 and its C40 sibling do NOT get the B&W option at all. Harman Kardon is the XC40's actual top-tier factory system instead, a real, different partnership with a conventional (non-free-air) subwoofer design.
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.