6x8 to 6.5in Speaker Adapters

prusaprinters

<p>I designed these to adapt my factory 6x8 speaker mounts to aftermarket 6.5" speakers. These were specifically designed for my 2013 Mazdaspeed3, though they will likely be a drop-in replacement for all Mazda3/Speed3 models for the 2010-2013 model years.&nbsp;</p><p>These were designed to allow the Hertz Cento CK165 woofers to mount in the door without modifying any of the door structure. These speakers have a mounting depth of 131.5mm. According to after the install, this is likely the maximum depth of speaker you would want to mount in this particular arrangement.&nbsp;</p><p>The models are marked ‘front’ and ‘rear’ based on which speaker location they were used in. The geometry is entirely symmetrical, so there is no mounting them upside down.&nbsp;</p><p>I did use two speaker gaskets of 1mm foam sheet; between the door mount and the adapter, and then between the adapter and the speaker. This adds about 1mm overall of depth after the foam compresses.&nbsp;</p><p>I printed the adapters in PETG for it's increased thermal resistance. Infill was set to 25%. They came out very rigid, and so far they sound great. They've been in use for about five months at the time of posting.&nbsp;</p>