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140/164 Series General Forum for the Volvo 140 and 164 cars |
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Speakers and radio installation?Views : 1725 Replies : 11Users Viewing This Thread : |
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Jan 6th, 2021, 16:19 | #11 | |
Master Member
Last Online: Yesterday 16:01
Join Date: Jul 2020
Location: Saskatchewan, Canada
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When I did my restoration I extended MLV with a 3/8" foam de coupler from the front floor wells right up the vertical face of the firewall. Volvo originally used what appears to be MLV with a foam de coupler; but, only on the vertical face of the firewall relying on the jute / felt stuff under the front part of the carpet for sound abatement. I didn't apply any sound control material (other than some damper pads) to the approximately horizontal surface under the front air inlet area below the windshield. I had experimented with trying to apply MLV to that location using some 3M spray adhesive; but, the MLV is quite heavy and would not stay in place (or the adhesive did not play nicely with the foam de coupler). In retrospect I should have tried harder and 3M acoustic might be a good solution for that location. The 3M is light enough that spray adhesive or double sided tape should keep it in place. I used double sided tape to attach the 3M to the inside or my roof and so far (6 years) it has prevented the 3M from dropping down on to the head liner. With all the holes and mounting brackets on the vertical face of the firewall applying sound control material there is a real treat. I think MLV with a de coupler is about as good as you can do because things like the throttle operating mechanism (on LHD cars) and the heater cable and such make application of a thick material like 3M a problem. Last edited by 142 Guy; Jan 6th, 2021 at 16:28. |
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Jan 6th, 2021, 16:21 | #12 | |
Chief Bodger
Last Online: Yesterday 19:53
Join Date: Oct 2009
Location: Aberdeen
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https://www.carinsulation.co.uk/prod...mal-insulation Tecsound are the products I have at my workshop: https://www.customaudiodirect.co.uk/...earch=Tecsound
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One day I will get rid of all of the rust. Last edited by Burdekin; Jan 6th, 2021 at 16:32. |
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