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<blockquote data-quote="Jeffdachef" data-source="post: 8676218" data-attributes="member: 650438">it reduces resonance and road noise. Its not gonna block out high frequency sounds like the ones you are talking about. It will just make a flimsy corolla feel more like a BMW at best but its not gonna work miracles. You still have windows and the thin glass will still be your main source where sound goes through. Deadening actually helps your insulate your car rejecting heat when its hot and keeping heat in when its cold. especially if you use some kind of heat shield material over your CLD tiles.Absolutely not. There&#039;s nothing that would make it harder if you just make a wooden baffle/spacer for your door speakers and properly gasket it. i&#039;d place signal processing + power aka DSP and amps Or head unit swap over sound deadening in terms of actual performance increases in the system because you can do a full proper tune with that which makes the biggest night and day differences. Then sound deadening and acoustical treatments and speaker selection and positioning are both close 2nds.</blockquote>

[QUOTE="Jeffdachef, post: 8676218, member: 650438"] it reduces resonance and road noise. Its not gonna block out high frequency sounds like the ones you are talking about. It will just make a flimsy corolla feel more like a BMW at best but its not gonna work miracles. You still have windows and the thin glass will still be your main source where sound goes through. Deadening actually helps your insulate your car rejecting heat when its hot and keeping heat in when its cold. especially if you use some kind of heat shield material over your CLD tiles. Absolutely not. There's nothing that would make it harder if you just make a wooden baffle/spacer for your door speakers and properly gasket it. i'd place signal processing + power aka DSP and amps Or head unit swap over sound deadening in terms of actual performance increases in the system because you can do a full proper tune with that which makes the biggest night and day differences. Then sound deadening and acoustical treatments and speaker selection and positioning are both close 2nds. [/QUOTE]

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