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<blockquote data-quote="ducatipaso" data-source="post: 8242127" data-attributes="member: 644396">I pulled the door panels on my C70 so that I could get an idea for how to sound dampen / deaden the doors and I found a phew parts that were bolted tougher and making metal on metal contact { of witch could vibrate}&nbsp; and the plastic honey comb - crash crumble zone plastics inserts were a bit loose/ un-dampened and making contact with the door, so those areas could of been creating vibrations.The window is controlled with cables and the inside of the door is much tighter then I remember it being. The doors already have a layer of sound damping matt &amp;amp; quite a bit of foam pad. I must have been thinking of a Volvo S70 or Volvo 850&#039;s doors when I thought their was a large degree of improvement to me made in sound damping my C70&#039;s doors.The doors are sealed pretty good so the free air 8&#039;s have a good baffle, I am thinking that I will tape off everything I don&#039;t want to get the roofing cement on and then just try to improve what is their and cover as much of the metal as I can with a layer of roofing cement and then stick a layer of foam to it. I will cut the shingles into the right size pieces, preheat them and then mold them and seal them into place.As I do the doors I want to keep my long term goal in mind of bringing the subs up level with the door panels so the sound waves aren&#039;t limited to only coming out of a speaker grill that is less then half the size of the 8. I&#039;ve been taking pics but I need to buy a new micro memory card before I can upload the pics.I was looking at the inside of the door panels also for anything loose or making contact with the door that could rattle and the door panels looked pretty good, but I suppose when your working with a car that had a $43,000 msrp when it was new the car should be a quality foundation to build from.When I look at the doors &amp;amp; the area that the 8&quot;&#039;s mount to, for me to bring the 8&quot;&#039;s up I would need to make wooden rings that go around the sheet metal that supports the 8&#039;s and build up a surface for a new speaker mounting surface. And then cut into the door panel so that it could fit next to the new speaker enclosure.<img src="http://&amp;lt;!--url%7B0%7D--&amp;gt;%5B/img%5D&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;%C2%A0&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;The%20picture%20is%20of%20a%20C70%20door%20of%20the%20net&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;%C2%A0&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;%C2%A0&amp;lt;/p&amp;gt;&amp;lt;p&amp;gt;The%20blue%20circle%20is%20the%20location%20of%20the%204%22mid%20and%20their%20isn" alt="" class="fr-fic fr-dii fr-draggable " style="" />The lower area of the door is were the 8&quot; sub is, The black arrows are pointing to were the clips are that hold the panel on, I kind of like the idea of cutting along the doted orange line and then up &amp;amp; around the sub. So that I can make the lower area into a shelve for the door panel to mount to and then it could slide behind a lip on the speaker enclosure.{orange arrows are screws going up and yellow arrows screws going down.}Then I could cover that whole lower area &amp;amp; speaker enclosure with some type of blue material and fit the door panel onto it. I&#039;ve never do anything like this but I think it would look excellent &amp;amp; accomplish the goal of bring the 8&#039; to the surface.</blockquote>

[QUOTE="ducatipaso, post: 8242127, member: 644396"] I pulled the door panels on my C70 so that I could get an idea for how to sound dampen / deaden the doors and I found a phew parts that were bolted tougher and making metal on metal contact { of witch could vibrate} and the plastic honey comb - crash crumble zone plastics inserts were a bit loose/ un-dampened and making contact with the door, so those areas could of been creating vibrations. The window is controlled with cables and the inside of the door is much tighter then I remember it being. The doors already have a layer of sound damping matt & quite a bit of foam pad. I must have been thinking of a Volvo S70 or Volvo 850's doors when I thought their was a large degree of improvement to me made in sound damping my C70's doors. The doors are sealed pretty good so the free air 8's have a good baffle, I am thinking that I will tape off everything I don't want to get the roofing cement on and then just try to improve what is their and cover as much of the metal as I can with a layer of roofing cement and then stick a layer of foam to it. I will cut the shingles into the right size pieces, preheat them and then mold them and seal them into place. As I do the doors I want to keep my long term goal in mind of bringing the subs up level with the door panels so the sound waves aren't limited to only coming out of a speaker grill that is less then half the size of the 8. I've been taking pics but I need to buy a new micro memory card before I can upload the pics. I was looking at the inside of the door panels also for anything loose or making contact with the door that could rattle and the door panels looked pretty good, but I suppose when your working with a car that had a $43,000 msrp when it was new the car should be a quality foundation to build from. When I look at the doors & the area that the 8"'s mount to, for me to bring the 8"'s up I would need to make wooden rings that go around the sheet metal that supports the 8's and build up a surface for a new speaker mounting surface. And then cut into the door panel so that it could fit next to the new speaker enclosure. [IMG]%5B/img%5D%C2%A0The%20picture%20is%20of%20a%20C70%20door%20of%20the%20net%C2%A0%C2%A0The%20blue%20circle%20is%20the%20location%20of%20the%204%22mid%20and%20their%20isn[/IMG] The lower area of the door is were the 8" sub is, The black arrows are pointing to were the clips are that hold the panel on, I kind of like the idea of cutting along the doted orange line and then up & around the sub. So that I can make the lower area into a shelve for the door panel to mount to and then it could slide behind a lip on the speaker enclosure. {orange arrows are screws going up and yellow arrows screws going down.} Then I could cover that whole lower area & speaker enclosure with some type of blue material and fit the door panel onto it. I've never do anything like this but I think it would look excellent & accomplish the goal of bring the 8' to the surface. [/QUOTE]

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