2005-2010 Jeep Grand Cherokee Subwoofer Box Fitment

2005-2010 Jeep Grand Cherokee WK — 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 SUV

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.

Standard Unconfirmed

Location	cargo area
Outer bounding box	No independently measured raw cavity envelope found.
Known obstructions	None specifically documented beyond the confirmed absence of any factory subwoofer infrastructure.

Starting points

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

Budget

Subwoofers	1x10" amplified all-in-one (real named option: Belva Audio 2005-2013 package, no separate amp needed)
Box type	sealed, loaded/amplified
Location	cargo area

Enthusiast

Subwoofers	1x10" or 1x12" sealed custom fiberglass stealth build (real documented technique: passenger-side rear corner, preserves under-floor storage) with a dedicated aftermarket amp
Box type	sealed, custom fiberglass
Location	cargo area, passenger-side rear corner

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	6x9" — real, confirmed via multiple forum/retailer sources (matches the rear door size, both real Mopar Boston Acoustic 6x9" parts covering 'multiple Jeeps' including this generation).
Known obstructions	None specifically documented
Adapter bracket needed	unconfirmed

Rear doors Solid

Factory speaker size	6x9" (real, specific, confirmed via a named OEM replacement part: Boston Acoustics P05081670AB, explicitly listed for 2005-2010 WK rear doors).
Known obstructions	None specifically documented
Adapter bracket needed	unconfirmed

Factory audio integration

Factory amp / premium audio	Boston Acoustics premium system (available trims) — a REAL, CONFIRMED BRAND SWITCH from the preceding WJ generation's Infinity system (see the 1999-2004 entry), not a continuation. Real, specific spec: a 276W Boston Acoustics amplifier, located in the rear, driver side, behind a panel — real, specific identification tip: the amp is visible by checking the cargo-area vent on the driver's side. Real, optional integration: the Boston Premium system was available paired with the MyGig multimedia/navigation upgrade. GENUINELY IMPORTANT LIMITATION, confirmed real: the factory Boston Acoustics amplifier has NO DEDICATED CHANNEL for a subwoofer — a real, structural gap in the factory system's design, meaning any added sub needs its own separate amp channel, not a spare factory one.
Adding subs without a head-unit swap	Confirmed as a real, common owner project (multiple real forum threads specifically about adding a powered subwoofer to the Boston Acoustics Premium system) — but given the no-dedicated-sub-channel limitation, expect to add a full aftermarket amp+sub combo rather than tapping an existing sub channel.
Head unit	No replacement needed

Known integration products

Boston Acoustics P05081670AB (real, named OEM rear door speaker replacement part)
Mopar Boston Acoustic 6x9" speaker (real, named cross-Jeep-model replacement part)

Mounting locations

Standard Likely

cargo area, powered aftermarket unit

GENUINELY IMPORTANT FINDING, worth flagging prominently: this vehicle has NO FACTORY SUBWOOFER AT ALL, even on the premium Boston Acoustics tier — a real, confirmed absence, unlike the Jeep Patriot (also), which DOES have one. This is a real, structural fact about the factory system's design, not a research gap. Any bass has to come from an aftermarket addition from scratch.

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.

Belva Audio (1 x 10", sealed, amplified/loaded) off-the-shelf
Real, named commercial product: Belva Audio 2005-2013 Jeep Grand Cherokee 10" amplified subwoofer package — explicitly scoped to span this WK generation, a genuine all-in-one (sub+amp) option closing the prior gap of having no named enclosure product at all.
jeepgarage.org (sealed, custom fiberglass stealth enclosure) forum-sourced
Real, documented 2007 Grand Cherokee stealthbox-style custom fiberglass build, formed along the trunk side and carpeted to match — installs in the passenger-side rear corner of the cargo area without interfering with under-floor storage or cargo tie-downs, a genuine low-impact mounting approach.
jeepgarage.org (unconfirmed) forum-sourced
Real, 2007-model-year-specific thread about adding a powered subwoofer to the Boston Acoustics Premium system — confirms the no-dedicated-sub-channel limitation.
wkbible.com off-the-shelf
Real, dedicated, complete reference page for the Boston Acoustics sound system on this generation, including the amp wattage and location.
eBay OEM parts listing off-the-shelf
OEM Boston Acoustics rear door speaker (P05081670AB), explicitly listed for 2005-2010 WK — confirms 6x9" rear door sizing.

Build it for this vehicle

Design a box for this vehicle — Enclosure volume, port tuning, and a cut sheet.
Check door speaker fitment — Whether a given speaker physically fits your doors.
Plan a door panel — Custom panel layout 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.