2013-2017 Honda Accord Subwoofer Box Fitment

2013-2017 Honda Accord 9th Gen — subwoofer box fitment

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, 2-Door Coupe

Where a box actually fits

These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.

Trunk Likely

Location	trunk, through existing opening (body-style-specific)
Outer bounding box	Sedan max: 35"W x 17.5"D x 18"H (will NOT clear 6x9 speakers or factory amp). Coupe: 32"x17"x17" (WILL clear both). 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 94-25 HONDA ACCORD': Height 13 1/2", Front Length 37 1/4", Rear Length 31 1/4", Top Depth 13 1/2", Bottom Depth 17 3/4" (labelled by Ground Shaker), 3.15 FT^3 total; 1.58 FT^3 per subwoofer, Fits contoured to trunk shape directly behind rear seat; Ground Shaker 'BLACK 10" SINGLE PORTED SUB BOX, FITS 02-25 HONDA ACCORD': Height 13 1/2", Length 29", Top Depth 13", Bottom Depth 17" (labelled by Ground Shaker), 2.33 FT^3, Slides up against the rear seat.
Known obstructions	Sedan's factory 'black box' amp physically blocks larger builds — opposite of the usual sedan-vs-coupe pattern, verified per source
Usable volume estimate	1.5 ft³

Starting points

Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.

Budget

Subwoofers	1x10" sealed
Box type	sealed
Location	trunk — confirm coupe vs. sedan clearance before finalizing size

Enthusiast

Subwoofers	1x12" sealed
Box type	sealed
Location	trunk, coupe body style has more usable clearance per the real fitment guide found

Door speaker fitment

Sizes and depths below are what research turned up for this generation. Confirm against your own vehicle before cutting or ordering — trim levels vary.

Front doors Solid

Factory speaker size	6-3/4" woofer + 3" tweeter (real 2-way factory setup)
Known obstructions	6/7-speaker systems have sail panel tweeters; 4-speaker versions do not
Adapter bracket needed	unconfirmed
Tweeter	SAIL PANEL-mounted (not in the door itself, not dash/A-pillar) — confirmed, 6/7-speaker systems only; 4-speaker base systems have no tweeter at all.

Rear doors Solid

Factory speaker size	6.5" (aftermarket product confirms this via a dedicated speaker pod)
Known obstructions	Coupe body style has speakers in doors and rear deck instead of true rear doors
Adapter bracket needed	unconfirmed
Tweeter	n/a — tweeter is sail-panel mounted, front only

Factory audio integration

Factory amp / premium audio	A factory amp ('black box') is confirmed present on at least some trims — specific obstacle for sedan-body installs per the fitment note above. Honda spec sheets (2013, 2016, 2017): LX and Sport sedan 160W, 4 speakers; EX sedan and LX-S coupe 160W, 6 speakers; EX-L and Touring (and the EX/EX-L coupe) a 360W premium system with 7 speakers including a subwoofer. So the 4-speaker base cars have no factory sub or amp; the 7-speaker cars have both. Honda does not publish speaker sizes or the sail-panel location.
Adding subs without a head-unit swap	Confirmed straightforward — trunk-based builds don't touch the head unit, though the factory amp module itself is a physical clearance obstacle on the sedan body style
Head unit	No replacement needed

Known integration products

LPHHD04 ($109) — PAC Audio LocPro vehicle-specific T-harness line-output converter, per PAC's own published Application Guide (pac-audio.com, harvested 2026-08-04). TWO conditions, not one: the car must be WITHOUT a factory amplifier AND must have the COLOR screen — PAC lists the monochrome screen as NOT compatible. PARTIAL: PAC's Accord coverage starts at 2016, so only 2016-2017 of this generation is covered.

Mounting locations

Trunk Likely

trunk, through existing opening, no modification

BODY-STYLE-SPECIFIC FITMENT DIFFERENCE, so do not treat 'Accord' as one shape: Sedan max external box dimensions are 35"Wx17.5"Dx18"H but will NOT clear the 6x9 speakers or the factory 'black box' amp; Coupe dimensions are smaller (32x17x17) but WILL clear both. This is the opposite of the usual pattern (coupe usually has less room) — worth double-checking, but that's what the source states. Mounting hole cutouts: 9.125" (10") / 11.125" (12").

Builds and products found for this vehicle

Outside links. Some are commercial products, some are owner builds posted on forums — the label says which. We do not endorse any of them.

6thgenaccord.com forum forum-sourced
Sedan: 35"Wx17.5"Dx18"H max, will NOT clear 6x9s/black box. Coupe: 32x17x17, WILL clear both.
Zenclosures (sealed) off-the-shelf
Mounting hole cutouts 9.125" (10") / 11.125" (12")
Skar Audio (1 x 10", sealed) off-the-shelf
Single 10" 1,000W Loaded Subwoofer Enclosure Compatible with 2013-2017 Honda Accord Vehicles (L-VS-1X10HONACC-2013-2017). Skar Audio states fit years 2013-2017 (Coupe and Sedan). Outside dimensions: not recorded here — check Skar's product page. Type: sealed. Location: trunk sidewall (side-mounted, vehicle-specific fiberglass molding).
Ground Shaker (sealed) off-the-shelf
BLACK 10" DUAL SEALED SUB BOX, FITS 94-25 HONDA ACCORD (SKU GS-HA210B). Ground Shaker states fit years 94-25 for Honda Accord. Published outside dimensions: Height 13 1/2", Front Length 37 1/4", Rear Length 31 1/4", Top Depth 13 1/2", Bottom Depth 17 3/4" (labelled by Ground Shaker). Published volume: 3.15 FT^3 total; 1.58 FT^3 per subwoofer. Mounting depth 11 1/2". Type: sealed. Location: Fits contoured to trunk shape directly behind rear seat; Rear firing. Maker notes: No modifications required. The same outside dimensions, volume and mounting depth are printed for these related listings: 12" dual [GS-HA212B]; 10" triple [GS-HA310B]; 12" triple [GS-HA312B].
Ground Shaker (ported) off-the-shelf
BLACK 10" SINGLE PORTED SUB BOX, FITS 02-25 HONDA ACCORD (SKU GS-HACP110B). Ground Shaker states fit years 02-25 for Honda Accord. Published outside dimensions: Height 13 1/2", Length 29", Top Depth 13", Bottom Depth 17" (labelled by Ground Shaker). Published volume: 2.33 FT^3. Mounting depth 9". Type: ported. Location: Slides up against the rear seat; Rear firing. Maker notes: No modification required. The same outside dimensions, volume and mounting depth are printed for these related listings: 12" single [GS-HACPK112B] (SoloBaric variant); 12" single [GS-HACP112B]; 10" single [GS-HACPK110B] (SoloBaric variant).

Build it for this vehicle

Design a box for this vehicle — Enclosure volume, port tuning, and a see-through render.
Door speaker fitment — No measured door depth on file for this vehicle yet, so there is no fit check to run. The page says how to request one.
See the factory speaker locations — Factory speaker sizes, depths and locations we have researched for this vehicle.

Each link opens the tool with this vehicle already selected.

Before you cut anything

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.