Dynamat: whole door or just a square?

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Priusguy

Member - Posts: 25

Joined: April 03, 2005

Posted: April 11, 2005 at 12:02 PM / IP Logged

I was given two options for applying Dynamat to the four doors of my Prius:

1. Just the area behind the speakers

2. Whole door.

Would like to hear back from those who've done it either way re: how much of a benefit I can expect and also how long it took.

I already have two rolls so it's just a matter of the extra labor. Should I expect to pay the normal per hour charge for installing car audio?

Thanks.

kfr01

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Joined: April 30, 2003

Posted: April 11, 2005 at 1:18 PM / IP Logged

You already have the mat?

Do it yourself. It is VERY VERY easy. We can coach you through it. It is actually fun and satisfying to finish a project like that yourself. All you need is a roller, heat gun, and sharp edge. They don't need to be nice. I bought a generic brand heat gun on ebay for $11.00 shipped. Worked great for mat install.

In my experience it is well worth it mat the front doors as much as possible.

Double layer the front doors before spending ANY time and/or money on the rear doors. Some folks disagree, but I'm in the crowd that thinks front stage carries 90% of the importance in car audio (or home audio, for that matter). You want to deaden and seal those front door panels as much as possible. The more solid you get the baffle the tighter and cleaner your midbass and lower midrange will be.

New Project: 2003 Pathfinder

Priusguy

Member - Posts: 25

Joined: April 03, 2005

Posted: April 11, 2005 at 2:22 PM / IP Logged

So double matting the front doors and just single squaring the areas behind the rear is a good way to go? Is it easier to apply the 2nd layer than the 1st? How many install hours should I be willing to pay for on that?

Was going to have it done the same time I have the speakers done and wasn't planning on doing that myself though I suppose I could. Mostly because I'm not that anxious to take apart the doors on my new Prius. Thanks!

kfr01

Gold - Posts: 2,121

Joined: April 30, 2003

Posted: April 11, 2005 at 2:29 PM / IP Logged

I'm not sure about the install hours.

I would go with what you suggested though, double matting the front and a single square behind the rear speakers.

In a correctly balanced system your rears will be well attenuated with respect to your fronts, so they won't need the same type of stiff baffle.

New Project: 2003 Pathfinder

Gary Cooper

Member - Posts: 1

Joined: April 13, 2005

Location: South Africa

Posted: April 13, 2005 at 3:49 PM / IP Logged

so what do you do if you can't get hold of Dynamat?

i live in south africa and we don't get all the products most countries have to offer. we are steadly moving towards

improving our car audio market but we are still a bit behind in that aspect. iv'e tried in vain for many months to get hold of dynamat all over sa but no-one seems to have any. one guy thought i was talking about the cloth we use to cover th sub enclosures! ;)

geepherder

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This member consistently provides reliable information

Joined: October 27, 2003

Posted: April 13, 2005 at 9:01 PM / IP Logged

Here in the states you can go to the home improvement store and pick up some roof underlayment. It comes in rolls that are 6 inches (15 cm) wide.

My ex once told me I have a perfect face for radio.

kfr01

Gold - Posts: 2,121

Joined: April 30, 2003

Posted: April 13, 2005 at 9:11 PM / IP Logged

Yeah, basically anything you can find to stick to the panels and add mass will do the trick. Cloth won't do it. It needs to add some mass.

New Project: 2003 Pathfinder

mrmsudawgs

Copper - Posts: 145

Joined: February 22, 2005

Location: United States

Posted: April 14, 2005 at 8:22 AM / IP Logged

What's the point of Dynamat? Is it to improve sound quality, stop rattles, or both?

Mike

2000 F150 Supercab Lariat, Alpine CDA-9831, Polk MMC570 in Doors, One Polk MM2104 Sub, One Polk Carbon C400.4 Amp.

John 3:16

kfr01

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Joined: April 30, 2003

Posted: April 14, 2005 at 8:50 AM / IP Logged

Both. Resonance will color the sound whether it is from rattles or backwave.

New Project: 2003 Pathfinder

nismo350z

Member - Posts: 44

Joined: February 23, 2005

Location: United States

Posted: April 14, 2005 at 9:05 AM / IP Logged

I have a 1990 Prelude that has a very noisey interior, i dynamated the floorboard and the doors. I did two layers on the floor board, and i did one layer on the inside of the door, another layer on the inside of the panel of the door, and put a third layer just around the speaker. What i found was a HUGE diffrence in mid bass sound in the front of the veichle. It stopped the rattling in the doors, It improved clarity of the sound and kept extra road noise out. I personal really liked the diffrence and was suprised at it.

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