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: 2-Door Hatchback/Coupe
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | trunk, past the wheel wells or custom-conformed shape |
|---|---|
| Outer bounding box | 30"W x 12"D x 15"H (custom build sitting just past the wheel wells) |
| Known obstructions | None specifically documented — genuinely irregular trunk shape is why the templating technique (cardboard + styrofoam peanuts) is used here |
| Usable volume estimate | 3.1 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" factory-fit (Q-Customs) |
|---|---|
| Box type | sealed |
| Location | trunk |
| Subwoofers | 1x10" or 1x12" custom-templated, past the wheel wells, 30x12x15 |
|---|---|
| Box type | sealed |
| Location | trunk, custom-conformed shape |
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 | 5.25" (owner sources, trim not stated) or 6.5" on the Type-S Bose system (Acura) — for the Type-S, Acura's 2005 RSX page lists "Two 1½-inch tweeters mounted in the dash and four 6½-inch wide-range speakers located in the doors and rear panels" on the Bose system. Acura prints no size for the base 6-speaker car, so the 5.25" may be the base-car size. Real magnet-depth constraint from owner sources: should not exceed 2.25" for aftermarket replacements of the 5.25" speaker; no depth is published for the Type-S door. |
|---|---|
| Max mounting depth | 2.25 in |
| Known obstructions | Confirmed magnet-depth ceiling — verify before ordering a deep-magnet aftermarket driver |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a in the door — confirmed DASH mounted (2 units, one each side), NOT A-pillar. Conflicting size sourcing: one source cites 1.5" tweeters, another describes all 4 factory speakers as 6.5" with 1" dash tweeters. Real Bose-specific detail (Type-S trim): the amplifier serving the front dash tweeters, door speakers, AND rear speakers is mounted under the passenger seat. Tweeters pop out of the dash easily with a small screwdriver for replacement. Acura's 2005 RSX page settles the size for the Type-S Bose system: "Two 1½-inch tweeters mounted in the dash". Acura prints no tweeter size for the base car, so the 1" figure may describe it. |
| Factory amp / premium audio | Clean, exclusively gated. Acura/Bose 7-speaker Music System (6-disc in-dash CD changer) confirmed as Type-S EXCLUSIVE — sourcing states the Type-S 'came only one way,' meaning every Type-S included leather, the 6-speed manual, AND the Bose system as one fixed package, not an optional add-on. Base RSX trims do not get Bose. Acura's 2005 RSX page: "The RSX's exclusive Bose Richbass woofer, cleverly located in the spare tire well to help maximize available space"; the 2002 launch release says the Type-S adds a "new Bose Richbass woofer". So a Type-S has a factory woofer in the spare-tire well, under the cargo floor a box sits on; Acura describes the base RSX system as six speakers with no woofer. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward — trunk-based builds don't touch the head unit |
| Head unit | No replacement needed |
Genuine deep tuner/enthusiast culture — this is the Honda-adjacent (K-series engine platform) tuner community, same spirit as the Civic/Integra scene broadly. Real factory-fit product: Q-Customs enclosure with a 5/8"-thick MDF baffle for a 10" driver. Custom build: 30"W x 12"D x 15"H sitting just past the wheel wells, leaving usable trunk space. GENUINELY CLEVER FABRICATION TECHNIQUE, worth logging as a general method not just vehicle-specific: builders use a cardboard box sized to the target sub, fill it with plastic-bagged styrofoam packing peanuts, and conform that to the actual trunk shape to derive a custom template before committing to MDF/fiberglass — a genuinely reusable trick for any tight, irregular trunk. Also real: filling material (R-19 insulation or pillow stuffing) inside a sealed box can increase PERCEIVED box volume by 10-13%, since sound reflects off the material before reaching the back wall — a real acoustic principle, not vehicle-specific.
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.