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08-23-2020, 05:47 PM #1Junior Member
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Installing JL M7 IB subwoofer in Helix
This was pretty scary to do without pictures due to limited clearance so I figured I’d post what I did and see if it helps anyone.
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08-23-2020, 05:51 PM #2Junior Member
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First, I used my router to cut a template of the surround. I then marked on it where the screws go and mounted my surround template
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08-23-2020, 05:54 PM #3Junior Member
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While there has to be a better way, all I could think of was a Dremmel with a carbide tip attachment. I used this due to limited clearance for a router or jig saw. Took a bit as the Dremmel got hot and I’d have to let it cool.
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Turned out pretty good for the hole:
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08-23-2020, 05:58 PM #4Junior Member
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Done
And the final product:
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It is pretty loud, but lots of dash rattles. I’m going to mat it and have closed off some of the holes on the back of the dash with some success. I’ll get to looking with what people here did to solve that issue.
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08-24-2020, 08:18 AM #5
I've had good luck with this stuff to knock down rattles
https://www.amazon.com/Noico-deadeni...xpY2s9dHJ1ZQ==2020 Supra SA
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08-24-2020, 08:44 PM #6
looks great...
hardest part is putting the first hole in the boat. gets easier now'06 Supra Launch 20SSV-gone but never forgotten
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08-25-2020, 07:48 AM #7Junior Member
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08-25-2020, 08:21 AM #8
I haven't used the red but have read good things about it for sound deadening uses.
I don't know how much it will help for this though as you're not trying to block sound you're really just trying to stiffen the glass and absorb some of that energy before it gets to the glass.
Mass loaded vinyl may be a good option it's super dense and absorbs a lot of the energy of the sound wave vs stiffening the panel like the butyl stuff.
A little pricier though.
https://www.amazon.com/Loaded-Barrie...ustomerReviews2020 Supra SA
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09-07-2020, 04:59 PM #9Junior Member
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- Jun 2018
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Actually most the vibration turns out to be between the glass and the softer dash material. Some moderate density foam really dampened it well. May lay the vinyl on the front side, but really loud without rattles locally now - more distant things start to make noise of course.