Reply to thread

Message

<blockquote data-quote="FoxPro5" data-source="post: 4596394" data-attributes="member: 562649">You&#039;d have to define that for yourself, really. Proper, in my eyes, is combating all intrusive noise into a MOVING car. There&#039;s a whole world outside structural damping and, to me, this is where the REAL results and satisfaction lie. To the avg dude on with a moderately-budgeted sound system, I can see how damping is a good front line defense.Rant...There are some people that believe and promote anything beyond damping to be &quot;extra&quot; or &quot;high tech&quot; but they simply don&#039;t understand the proper roll of different materials in the whole scheme of things. And to suggest anything beyond structural damping mat as such is completely asinine!/rantYou&#039;re suggestions are justified, In my view. We&#039;ll just say that a damped decoupled barrier (mat + decoupler + mass layer) is worth -20 dB in the road noise/engine/exhaust frequency band centered around 200 hz or so. You could do this on all surfaces of you car or on the areas you can afford. More is not better, smarter application on the areas most needed is better, IME.VBP is a decoupled barrier composite that will get you -16 dB at 200 hz. Add a damping layer underneath it and you might get to -20 dB. Thing to remember that damping is temperature dependent more than anything, and blocking is frequency dependent more than anything. In other words, no product is truly universal/broad-band...no matter who&#039;s trying to sell you what.Full disclosure: Vertex products are no longer for sale. I&#039;m just an amateur dumbass trying to make my car quieter just like anyone else. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif</blockquote>

[QUOTE="FoxPro5, post: 4596394, member: 562649"] You'd have to define that for yourself, really. Proper, in my eyes, is combating all intrusive noise into a MOVING car. There's a whole world outside structural damping and, to me, this is where the REAL results and satisfaction lie. To the avg dude on with a moderately-budgeted sound system, I can see how damping is a good front line defense. Rant... There are some people that believe and promote anything beyond damping to be "extra" or "high tech" but they simply don't understand the proper roll of different materials in the whole scheme of things. And to suggest anything [I]beyond [/I]structural damping mat as such is completely asinine! /rant You're suggestions are justified, In my view. We'll just say that a damped decoupled barrier (mat + decoupler + mass layer) is worth -20 dB in the road noise/engine/exhaust frequency band centered around 200 hz or so. You could do this on all surfaces of you car or on the areas you can afford. More is not better, smarter application on the areas most needed is better, IME. VBP is a decoupled barrier composite that will get you -16 dB at 200 hz. Add a damping layer underneath it and you might get to -20 dB. Thing to remember that damping is temperature dependent more than anything, and blocking is frequency dependent more than anything. In other words, no product is truly universal/broad-band...no matter who's trying to sell you what. Full disclosure: Vertex products are no longer for sale. I'm just an amateur dumbass trying to make my car quieter just like anyone else. [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] [/QUOTE]

Verification