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'95 Del Sol sound deadening project!
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<blockquote data-quote="Bereno" data-source="post: 7661396" data-attributes="member: 638453"><p>OK, the results! The new sound readings are in <strong>bold.</strong> However, it is really important to know that it started raining while taking these tests. I will comment more on that in a bit.</p><p></p><p>00mph: 47-48 decreased to <strong>44-45</strong> dB at cold idle, so a 3 dB improvement</p><p></p><p>35mph: 68-70 decreased to <strong>67-68</strong> dB on regular road, so a 1-2 dB improvement</p><p></p><p>35mph: 65-66 stayed the same at <strong>65-66</strong> dB on new pavement, so no improvement*</p><p></p><p>40mph: 72-73 decreased to <strong>69-71</strong> dB on regular road, so a 2-3 dB improvement</p><p></p><p>55mph: 76-79 decreased to <strong>74-76</strong> dB on regular road, so a 2-3 dB improvement</p><p></p><p>65mph: 71-74 increased to <strong>74-76</strong> dB on new pavement, so 2-3 decline*</p><p></p><p>65mph: 78-80 decreased to <strong>77-79</strong> dB on rough road, so a 1 dB improvement</p><p></p><p><strong>Note:</strong> all roads were somewhat wet for the first set of measurement, and were very wet for the second set. Just an FYI</p><p></p><p>*there was considerable levels of water on the road and a steady level of rainfall on the car increasing sound level here. Take it for what its worth.</p><p></p><p>Overall, there seems to be a consistent 2-3 dB decrease in the overall sound level. Overall, I think this could be really improved upon if there was a reasonable way for me to sound deaden the firewall and front foot wells. Using my passenger as a second opinion, we agreed that the majority of sound was coming from the cracks between the door and the body, and from the front wheel wells/firewall. Unfortunately, fixing this would be super time consuming, and is not necessarily worth the effort to me. Also, the center console, doors, and rear deck are all seemingly silent, so the CLD tiles and MLV are doing a great job there. Overall, it is a bit quieter than it was before. However, I was really hoping for about a 4 dB drop, so I am a little bummed, but I guess thats what I get for not really knowing what to expect in the first place haha. It seems as thought the MLV and the CLD tiles are working really well, but there is still a large seeping of sound into the cabin via pathways that are not easily treated. If you have any questions, please feel free to let me know. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif</p></blockquote><p></p>
[QUOTE="Bereno, post: 7661396, member: 638453"] OK, the results! The new sound readings are in [B]bold.[/B] However, it is really important to know that it started raining while taking these tests. I will comment more on that in a bit. 00mph: 47-48 decreased to [B]44-45[/B] dB at cold idle, so a 3 dB improvement 35mph: 68-70 decreased to [B]67-68[/B] dB on regular road, so a 1-2 dB improvement 35mph: 65-66 stayed the same at [B]65-66[/B] dB on new pavement, so no improvement* 40mph: 72-73 decreased to [B]69-71[/B] dB on regular road, so a 2-3 dB improvement 55mph: 76-79 decreased to [B]74-76[/B] dB on regular road, so a 2-3 dB improvement 65mph: 71-74 increased to [B]74-76[/B] dB on new pavement, so 2-3 decline* 65mph: 78-80 decreased to [B]77-79[/B] dB on rough road, so a 1 dB improvement [B]Note:[/B] all roads were somewhat wet for the first set of measurement, and were very wet for the second set. Just an FYI *there was considerable levels of water on the road and a steady level of rainfall on the car increasing sound level here. Take it for what its worth. Overall, there seems to be a consistent 2-3 dB decrease in the overall sound level. Overall, I think this could be really improved upon if there was a reasonable way for me to sound deaden the firewall and front foot wells. Using my passenger as a second opinion, we agreed that the majority of sound was coming from the cracks between the door and the body, and from the front wheel wells/firewall. Unfortunately, fixing this would be super time consuming, and is not necessarily worth the effort to me. Also, the center console, doors, and rear deck are all seemingly silent, so the CLD tiles and MLV are doing a great job there. Overall, it is a bit quieter than it was before. However, I was really hoping for about a 4 dB drop, so I am a little bummed, but I guess thats what I get for not really knowing what to expect in the first place haha. It seems as thought the MLV and the CLD tiles are working really well, but there is still a large seeping of sound into the cabin via pathways that are not easily treated. If you have any questions, please feel free to let me know. [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] [/QUOTE]
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