posted
i told my friend i was gonna dynamat my trunk for christmas. he said dynamat can actually hurt you because the car needs a certain amount of flex for the acoustical properties or something i told him he was full of ****, and he said go to any audio board where people know what there talking about, so i chose here.
someone please explain to me how dynamat can HURT my sound quality....i have 2 10's BTW.
thanks -Todd
-------------------- If a tree falls in the woods and theres no one around to hear it, does it still make a noise? Posts: 12 | From: boring delaware | Registered: Oct 2002
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Your trunk does have to breath a lil bit but alot of people i know DO dynomat their trunk or truck or suv etc and actually 9/10 times gain anywhere from 3 tenths to 3 db
-------------------- Posts: 6941 | From: Russellville AL | Registered: Nov 2002
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posted
You may notice a change in your "percieved" loudness as you won't have panel resonances etc. but thats mostly just noise that you don't want anyway. Any time you are moving a panel instead of the air in your vehicle, you're losing spl to mechanical losses. I don't think I've ever seen a case where it's a bad thing to add sound deadening especially for sound quality.
-------------------- Without Inno there can be no Innovation!
inno73@hotmail.com Posts: 490 | From: Fort Frances, Ontario, Canada | Registered: May 1999
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One more thing, you DO need air movement between the trunk and the passenger compartment, you can't seal the trunk off entirely and expect decent bass.
-------------------- Without Inno there can be no Innovation!
inno73@hotmail.com Posts: 490 | From: Fort Frances, Ontario, Canada | Registered: May 1999
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Mr tinytunes. Is the reason it hurt because, once you apply the dynamat it makes your interior now want to resonate at a higher frequency than what it did before? could you make up for that by trying to raise your enclosures peak frequency? or is it just something that across the board should be avoided? thanks
quote:Originally posted by Big Ben: Mr tinytunes. Is the reason it hurt because, once you apply the dynamat it makes your interior now want to resonate at a higher frequency than what it did before? could you make up for that by trying to raise your enclosures peak frequency? or is it just something that across the board should be avoided? thanks
sort of.. adding the extra weight causes the panels to resonate at a lower frequency, thus flexing less at the higher frequency.. because the panels are flexing less, the note of the cabin changes
Posts: 358 | From: .. | Registered: Apr 2002
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All I know is I test with a termlab, Audio Control and Linear X at high volume to find my note.... The note stayed the same.... And I went down in SPL....
I pulled it out.... and went back up....
-------------------- T3 Audio Incorporated >World Class Subwoofer & Speaker & Amplifier Development< Johnathan Demuth
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posted
I gained 1 1/2 db's from matting my trunk lid with 4 layers. for the SPL HEADS i can see where it hurts in some cases but matting your trunk and having the drivers fire at them gives you way better SQ.
I would also use RaMMatt rather the dynamat, no heat gun needed and is the same as dynamat extreme.
MIX^^^
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Your ears are your furtune!!DON'T shortcut car audio!!
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