Subwoofer

This procedure covers the removal and installation of the factory subwoofer in a 2009 Aston Martin DB9, typically located in the trunk area.

Warnings

Tools required

Parts

• Subwoofer assembly × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect battery negative terminal to isolate electrical system
3. Wait 2 minutes for capacitor discharge
4. Open trunk and remove any cargo items or floor mats obscuring access to the subwoofer area

Procedure

1. 1

   Remove trunk floor carpeting
   Locate the trunk floor carpet panel covering the subwoofer area. This carpet is typically held by plastic clips or press-fit fasteners around the perimeter. Gently lift the carpet starting from one corner, working around the edges to release the clips. The carpet may be in multiple sections; remove only the section(s) necessary to access the subwoofer enclosure.
2. 2

   Access subwoofer enclosure
   With the carpet removed, locate the subwoofer enclosure. It is mounted in the rear of the cabin/trunk area. Consult the vehicle-specific Linn audio system layout to confirm the exact subwoofer location before proceeding. Inspect for any secondary trim panels or covers that may be securing the enclosure. Remove any additional trim pieces by locating and removing their fasteners. Note: It is mounted in the rear trunk area; confirm the exact mounting location against OEM documentation for the 2009 DB9 before proceeding. Note: With the carpet removed, locate the subwoofer enclosure in the rear trunk/parcel area. Consult the factory service documentation for the exact mounting location on this vehicle, and inspect for any secondary trim panels or covers that may be securing the enclosure.
3. 3

   Remove enclosure mounting fasteners
   Locate the mounting fasteners securing the subwoofer enclosure to the vehicle body. Identify the fastener type and size before removal; verify against OEM documentation for the 2009 DB9. Remove the mounting fasteners around the perimeter of the enclosure; verify the exact count against the vehicle-specific service documentation. Support the enclosure weight as you remove the final fasteners to prevent it from dropping. Note: These are typically Torx fasteners; verify the exact size against the vehicle-specific service documentation before removal. Note: These are typically Torx fasteners. Confirm the exact Torx size and quantity against the factory service documentation, then remove the mounting fasteners around the perimeter of the enclosure.
4. 4

   Disconnect subwoofer electrical connector
   Carefully pull the subwoofer enclosure away from its mounting location to access the electrical connector on the back of the subwoofer. Locate the harness connector and press the locking tab (typically red or gray) while pulling the connector straight off. Do not pull on the wiring itself.
5. 5

   Remove subwoofer from enclosure (if applicable)
   If replacing only the subwoofer speaker itself and not the entire enclosure, locate the fasteners securing the subwoofer to the enclosure. Locate the Torx screws securing the subwoofer to the enclosure around the speaker perimeter; verify the exact count and driver size against the vehicle-specific service documentation. Remove these fasteners and carefully lift the subwoofer out, noting the orientation of the speaker cone and any gasket or seal material. Note: These are typically Torx screws around the speaker perimeter; confirm the exact count and Torx size against the factory documentation before removal.
6. 6

   Install new subwoofer into enclosure (if applicable)
   If you removed the subwoofer from its enclosure, install the new subwoofer by reversing the removal process. Ensure any gasket or seal is properly positioned. Align the subwoofer mounting holes with the enclosure and install the mounting fasteners (verify exact count against factory service documentation), tightening in a cross pattern to ensure even seating. Torque to finger-tight plus 1/4 turn; do not overtighten speaker mounting screws as this can distort the basket.
7. 7

   Reconnect electrical connector
   Position the subwoofer enclosure near its mounting location. Reconnect the electrical harness connector to the subwoofer, ensuring it clicks fully into place. Verify the locking tab is engaged.
8. 8

   Install enclosure mounting fasteners
   Align the subwoofer enclosure with its mounting location and body fastener holes. Install the mounting fasteners (verify exact count against factory service documentation) and tighten in a star pattern to ensure even pressure distribution. Torque Torx fasteners to a snug fit; do not overtighten as this can crack the enclosure mounting ears. Verify the exact torque specification against the vehicle-specific service documentation. Note: Torque Torx fasteners to the OEM-specified value for the 2009 DB9 subwoofer enclosure; do not overtighten as this can crack the enclosure mounting ears. Note: Torque Torx fasteners to the factory-specified value (confirm against service documentation); tighten to a snug fit but do not overtighten, as this can crack the enclosure mounting ears.
9. 9

   Reinstall trim panels and carpeting
   Replace any secondary trim panels removed in step 2, ensuring all fasteners are secured. Reinstall the trunk floor carpet section(s) by aligning with the mounting clips and pressing firmly around the perimeter until all clips engage. Verify the carpet sits flush and does not interfere with trunk lid closure.
10. 10

    Reconnect battery and test
    Reconnect the battery negative terminal and tighten the clamp securely to the OEM-specified torque for the 2009 DB9. Note that disconnecting the battery may require re-initialization of the audio/infotainment system and other modules per Aston Martin procedure. Start the vehicle and turn on the audio system. Test the subwoofer function by playing audio with bass content. Verify proper output, no distortion, and no rattles from the enclosure or surrounding trim. Note: Reconnect the battery negative terminal and torque to the factory specification. Note that reconnecting the battery may require re-initialization of the audio/infotainment system and other modules. Note that disconnecting the battery may require re-initialization of the audio/infotainment system and other modules per Aston Martin procedure.

Reassembly

1. Ensure all trunk trim panels are fully seated and secured before closing trunk lid
2. Verify no tools or parts are left in the trunk area
3. Check that trunk floor carpet does not interfere with trunk latch or hinges

Verification

• Power on audio system and play music with bass content to verify subwoofer operation
• Check for any rattles or vibrations from the enclosure or surrounding trim at various volume levels
• Verify all trunk trim panels are secure and properly aligned
• Confirm no warning lights on dashboard related to electrical system

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