Soundproofing a quiet car

galaxee · 03-23-2005, 06:56 PM

I've noticed when I leave my car on and run out to the mailbox that although the engine makes no noise (as expected) you can hear the music from outside the car. I don't play my music all that loud (well I don't think so anyway) but man, I wasn't expecting to hear every lyric and every note from 15 feet away. I never had that in my old car. Bass, yes. Everything else, no. And yes, I do close the door...

Is this a consequence of the car being built to be so lightweight?

V8Cobrakid · 03-23-2005, 07:31 PM

yeah.. they wanted it lightweight.. you could put in dinamat.. or.. dynomat.. whatever it's called.. but it's not light. I heard someone on here installed it on their doors. big improvement. I want to install it in my doors and in my floor. I'm not too worried about the weight right now.

kenmac · 03-23-2005, 10:51 PM

I worry more about the noise heard from inside.
Sound insulation needs improvement to minimise the roar when travelling on coarse road surfaces.
The type of tyre tread contributes here, but I think more effort is needed to reduce the entry of tyre noise.
I have Michelin Energy tyres, which tend to be very noisy when not running on a smooth tar surface.
It's disappointing that Toyota engineering seems to have missed this - maybe they erred in favour of a "lighter" vehicle!

kenmac

**Tideland Prius** · 03-23-2005, 10:54 PM

Anything above vol.20 will be heard outside (with doors closed) at 30, the lyrics are clear.

RBW111 · 04-04-2005, 05:21 PM

I'm having dynomat put in my doors and floor in 2 weeks. I'll report back on the results

03-23-2005, 06:56 PM	#1
galaxee running WOT until out of fuel Join Date: Mar 2005 Location: central NC/ western WI Posts: 8,927 My Car: 2005 Prius Package: #5 Nominated 5 Times in 3 Posts TOTM Awards: 0 Friends: 20	Soundproofing a quiet car I've noticed when I leave my car on and run out to the mailbox that although the engine makes no noise (as expected) you can hear the music from outside the car. I don't play my music all that loud (well I don't think so anyway) but man, I wasn't expecting to hear every lyric and every note from 15 feet away. I never had that in my old car. Bass, yes. Everything else, no. And yes, I do close the door... Is this a consequence of the car being built to be so lightweight?

04-04-2005, 05:21 PM	#5
RBW111 Senior Member Join Date: Feb 2005 Location: El Dorado, AR Posts: 139 My Car: 2007 Prius Package: #5 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Re: Soundproofing a quiet car I'm having dynomat put in my doors and floor in 2 weeks. I'll report back on the results

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
WOW that is QUIET!	jewelerdave	Fred's House of Pancakes	17	06-28-2007 12:49 AM
Prii too quiet?	dandude505	Prius Main Forum	13	03-01-2007 03:01 PM
Just how quiet is that Prius?	JackDodge	Prius Main Forum	19	03-30-2006 12:27 AM
Alternative Soundproofing/dampening	Lather	Audio and Electronics	3	10-25-2005 11:08 PM
Quiet?	jeffrey	Prius Main Forum	19	01-30-2004 07:24 PM

03-23-2005, 07:31 PM	#2
V8Cobrakid some guy... Join Date: Jun 2004 Location: San Jose, CA Posts: 2,460 My Car: 2004 Prius Package: #9 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 4	yeah.. they wanted it lightweight.. you could put in dinamat.. or.. dynomat.. whatever it's called.. but it's not light. I heard someone on here installed it on their doors. big improvement. I want to install it in my doors and in my floor. I'm not too worried about the weight right now.

03-23-2005, 10:51 PM	#3
kenmac Senior Member Join Date: Apr 2004 Location: Perth, Western Australia Posts: 149 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I worry more about the noise heard from inside. Sound insulation needs improvement to minimise the roar when travelling on coarse road surfaces. The type of tyre tread contributes here, but I think more effort is needed to reduce the entry of tyre noise. I have Michelin Energy tyres, which tend to be very noisy when not running on a smooth tar surface. It's disappointing that Toyota engineering seems to have missed this - maybe they erred in favour of a "lighter" vehicle! kenmac

03-23-2005, 10:54 PM	#4
Tideland Prius Super Moderator Join Date: Oct 2004 Location: Canada Posts: 13,562 My Car: 2005 Prius Package: B Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 11	Anything above vol.20 will be heard outside (with doors closed) at 30, the lyrics are clear.