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 Coupe, Convertible
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | spare tire well (stealth), behind seat, under passenger seat, or corner box — multiple real mounting philosophies |
|---|---|
| Outer bounding box | ~7" mounting depth fits nearly any sub on the market. Vehicle-specific enclosure catalogues; published box footprints are lower bounds on the cavity, not the cavity: NET Audio '2003-2008 Nissan 350z Sub Box Sealed': 10 x 36 x 11 in (as printed; axes not labelled), 0.77 ft3, rear cargo area, inside the strut tower [only 2003-2008]; NET Audio '2009-Up Nissan 370z Sub Box Single 10 Sealed': 12 x 45.5 x 13 in (as printed; axes not labelled), 1.1 ft3, trunk / cargo area [only 2009-2020]; SRQ Customs 'Nissan 350z Strut Tower Subwoofer Enclosure': 40 x 12 x 12 in (as printed; axes not labelled), 0.6 ft3, strut tower [only 2003-2008]; SRQ Customs 'Nissan 350Z Vehicle Specific Sub Enclosure Behind Front Seat': 26 x 20 x 12 in (as printed; axes not labelled), 0.66 ft3, behind the seats, replacing either the Bose subwoofer or the storage compartment [350Z; page states no model years]. Vehicle-specific enclosure catalogues; published box footprints are lower bounds on the cavity, not the cavity: Ground Shaker 'BLACK 10" DUAL SEALED SUB BOX, FITS NISSAN 370Z COUPE 2009-2016': Height 9 3/4", Length 38", Depth 13" (labelled by Ground Shaker), 1.64 cubic ft. total; 0.82 cubic ft. per subwoofer, FITS BEHIND THE STRUT BAR IN THE FORWARD SECTION OF THE CARGO AREA [only 2009-2016]; Ground Shaker 'BLACK 10" DUAL SEALED SUB BOX, FITS 03-08 NISSAN 350Z': Front Height 13 1/4", Rear Height 9", Top Length 26 1/2", Bottom Length 37 1/2", Top Depth 5", Bottom Depth 19 3/4" (labelled by Ground Shaker), 1.90 FT^3 total; 0.95 FT^3 per subwoofer, FITS UNDER THE STRUT BAR IN THE HATCH AREA [only 2003-2008]. |
| Known obstructions | Genuinely small trunk overall — spare-tire-well mounting is explicitly the stealthiest, zero trunk space lost option |
| Usable volume estimate | 0.8 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" shallow-mount sealed, spare-tire well |
|---|---|
| Box type | sealed |
| Location | spare tire well — zero trunk space lost, genuinely stealthy |
| Subwoofers | 1x10" or 1x12" sealed, 0.75-1.0 ft3, behind seat or under passenger seat |
|---|---|
| Box type | sealed |
| Location | behind seat or under 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 | 350Z: 6.5" x 2-7/8" deep with spacer ring — real depth restriction limits practical upgrade choices; can accommodate up to 6.75" but the selection is smaller due to this depth constraint |
|---|---|
| Max mounting depth | 2.875 in |
| Known obstructions | Genuine depth restriction is the binding factor, not diameter — verify depth before ordering |
| Adapter bracket needed | yes |
| Tweeter | A-pillar/sail-panel-mounted — confirmed 3/4" factory tweeter as part of a genuine 2-way component set (door woofer + separate tweeter). Important constraint: the stock sail-panel opening is genuinely small, and most aftermarket tweeters are physically bigger than it — expect a sound-quality compromise or cutting the panel for a proper aftermarket tweeter swap. |
| Factory speaker size | n/a — 2-door coupe/convertible body style |
|---|---|
| Known obstructions | No rear doors on this body style |
| Adapter bracket needed | n/a |
| Factory amp / premium audio | Clean, consistent across both generations covered by this page. Bose premium audio confirmed STANDARD on the Touring trim for both the 350Z (2003-2009, including Grand Touring from 2007) and the 370Z (2010-2020) — 370Z Touring specifically: 8 speakers with dual subwoofers, 6-CD Bose head unit. Base trims do not get Bose. Nissan's own counts: 350Z Touring and Grand Touring 'Bose audio system with 6-disc CD changer and 7 speakers' (2007, coupe and roadster; 2005 coupe Touring 'seven speakers'); 370Z (2012) coupe Touring '240W Bose audio ... 6 speakers + 2 subwoofers', roadster Touring the same configuration, base '2-DIN AM/FM/CD w/ 4 speakers'. Nissan's kits print no speaker sizes and do not say whether the 350Z Bose system has a subwoofer. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward across all the mounting locations found — none require touching the head unit |
| Head unit | No replacement needed |
Genuine sports-car enthusiast/SPL culture, multiple mounting philosophies documented — more location variety than most sedans. Real specs: 0.75-0.85 ft3 typical sealed volume, up to 1-2 ft3 for larger setups; ~7" mounting depth fits nearly any sub on the market. STEALTH BUILD, same pattern as the Rogue/Murano spare-tire findings: a sealed box with a shallow-mount 10" sub in the spare tire well is explicitly described as 'very stealthy,' doesn't cut into the limited trunk space at all. Alternate real builds: a Morel SPL Ultimo 10" mounted behind the seat, a 10" Kicker under the passenger seat. Corner boxes also exist for minimal-footprint installs.
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.