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I wanted to install some 6.5" round speakers into the Ford's 6x8 locations and couldn't find a suitable adaptor plate.
The hole is sized for a Goldwood GW-6024 6-1/2" woofer: http://www.parts-express.com/pe/pshowdetl.cfm?&Partnumber=290-351
These woofers have a frequency response of 29 to 4,800Hz, so obviously you will need to substitute a full range speaker or add tweeters.
My truck doesn't have any door location for tweeters, so I'll be installing them either in the upper portion of the door (defrost vent area) with a "waveguide" to direct the sound to the windshield or in pods close to the a-pillar.
I really should have made accomodations for some recessed, captive lock-nuts on the back side of the mount for the speakers. (If the screws loosen too much over time, then I will make the changes.)
I printed at a .3 layer height with 30%-40% rectilinear fill for rigidity, but also for mounting screw thread-holding strength.
Reuse the original speaker screws to mount plate into the door.
Because the speaker flange overlaps the original screw locations, I mounted the flange first and then used some fine thread screws to mount the speaker onto the plate.
1) Use the woofer to mark screw holes on the plate and to mark the outside edge of the woofer flange.
2) Drill holes for woofer screws. (Smaller holes than the screws you are using to mount the speaker, 'cause screws need something to grab onto!)
3) Temporarily mount the plate in the door. Take note of where the marks are for the outside edge of the woofer and transfer those marks to the door's plastic.
4) Cut slots for the speaker flange in the door. Cut the slots longer than the "flange marks" to give some wedging/wiggle room. (The plastic is very soft so I used an x-acto knife.)
5) Mount the plate in the door using the original screws.
6) Wedge the speaker -carefully- into the door using the slots for wedge room, then secure using screws.
Speaker Adaptor Plate for a 2007 Ford F150 by RyanStone is licensed under the Creative Commons - Attribution - Non-Commercial license.
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