I have a interesting question for everyone... - Toyota Yaris Forums

Slick · 03-16-2010, 03:00 PM

How much sound abuse can air bags take before the deploy? For example, I have all the airbags, could they take like 150 db without any problems? I realize I wouldn't be listening to 150 db as a dd. But does anyone know the amount of abuse an airbag can take before it explodes?

They may not do anything except enjoy the massage lol. But they also may deploy going 70 down the freeway.

My system pushes a little less than 120 db, so I know it can handle that. My steering wheel and dash rattle but nothing has happened yet.

So, any thoughts? Thanks in advance.

sqcomp · 03-16-2010, 04:07 PM

Don't the airbags deploy based off sensors close to the exterior of the vehicle?

One sniping comment...

I KNOW you have got to be doing more than 120 dB. I metered 136 dB at a competition with just two sealed 15" D series Solobarics and two ZR 360 amps back in the day...

CTScott · 03-16-2010, 04:10 PM

I haven't found a spec for the force required to pop the Yaris' airbags, but the sensors are accelerometers. The CPU monitoring them must be able to distinguish between normal road bumps and vibrations and the impact force of a crash. I don't believe that a stereo system could induce force with a high enough amplitude in the proper direction to make one of the sensors think that a collision occurred.

Slick · 03-17-2010, 01:47 AM

@sq- idk for sure what it makes. I knew for a fact more than a hundred, but I haven't listened to too many 130-140 db notes so i wouldn't know how to judge it. I figured 120 was at least near the ball park lol

@ct- accelerometers u say... Neat lol. Out if curiosity, is there a way to disarm the airbags all together? Like make a toggle switch or something?

sqcomp · 03-17-2010, 03:24 AM

Come on man! You're in Texas...they have to have some big boy SPL rigs out there.

CTScott · 03-17-2010, 08:42 AM

Quote:

Originally Posted by Slick

@sq- idk for sure what it makes. I knew for a fact more than a hundred, but I haven't listened to too many 130-140 db notes so i wouldn't know how to judge it. I figured 120 was at least near the ball park lol

@ct- accelerometers u say... Neat lol. Out if curiosity, is there a way to disarm the airbags all together? Like make a toggle switch or something?

You could selectively disable the SRS using a switch on the power feed to the SRS ECU.

talnlnky · 03-17-2010, 12:00 PM

Sounds pressure just isn't that strong.

I had my mazda meter over 140dB on the Termlab meter which is the stiffest and most accurate spl meter. No air bag problems... However, I couldn't get the deck to keep from skipping, The score would've been higher had the deck not kept skipping.

90tsi · 03-17-2010, 02:09 PM

i have crushed the frontend of an 07 but my bags never deployed and my 2 12s i have ran around 132db and they never deployied. i used to have the pic of as avatar. so im sure it takes quite a bit.

127.0.0.1 · 03-17-2010, 02:29 PM

soundwaves that could set off an airbag sensor
would need to be well above lethal pressures, such
as from sonic-boom stun-guns called "Thunder Generator cannons"

Mobius1 · 03-17-2010, 04:24 PM

worst question ever

Slick · 03-17-2010, 10:59 PM

Well, that's all I needed to know. Thanks for the useful and useless info :D

@sq - I didn't say there was a lack of hard hitters. It's just a lack of medium hitters lol.

@Mobius - there are no stupid questions... only stupid answers.

sbergman27 · 03-17-2010, 11:14 PM

Quote:

Originally Posted by 127.0.0.1

soundwaves that could set off an airbag sensor would need to be well above lethal pressures, such as from sonic-boom stun-guns called "Thunder Generator cannons"

I live along a major thoroughfare in Oklahoma City, and I think we get one or two of those cruising by per night.

-Steve

Malifabian · 04-16-2010, 09:13 PM

I havent found anything in regards to sound that would make your Airbags deploy

goku87 · 04-17-2010, 04:24 PM

I once screamed @ 126 dB.

03-16-2010, 03:00 PM	#1
Slick View User's Garage Drives: '09 3-Dr Join Date: Apr 2009 Location: Houston, Texas Posts: 616	I have a interesting question for everyone... How much sound abuse can air bags take before the deploy? For example, I have all the airbags, could they take like 150 db without any problems? I realize I wouldn't be listening to 150 db as a dd. But does anyone know the amount of abuse an airbag can take before it explodes? They may not do anything except enjoy the massage lol. But they also may deploy going 70 down the freeway. My system pushes a little less than 120 db, so I know it can handle that. My steering wheel and dash rattle but nothing has happened yet. So, any thoughts? Thanks in advance. __________________ In a world... where things squeak, wont fit,start to bleed, or are just plain hard to do.... ArmorAll will fix that

03-16-2010, 04:07 PM	#2
sqcomp Roadrunner Jr. View User's Garage Drives: 2007 Yaris S Join Date: Jan 2007 Location: Back at home Posts: 2,609	Don't the airbags deploy based off sensors close to the exterior of the vehicle? One sniping comment... I KNOW you have got to be doing more than 120 dB. I metered 136 dB at a competition with just two sealed 15" D series Solobarics and two ZR 360 amps back in the day... __________________ “To argue with a person who has renounced the use of reason is like administering medicine to the dead.” ― Thomas Paine

03-17-2010, 01:47 AM	#4
Slick View User's Garage Drives: '09 3-Dr Join Date: Apr 2009 Location: Houston, Texas Posts: 616	@sq- idk for sure what it makes. I knew for a fact more than a hundred, but I haven't listened to too many 130-140 db notes so i wouldn't know how to judge it. I figured 120 was at least near the ball park lol @ct- accelerometers u say... Neat lol. Out if curiosity, is there a way to disarm the airbags all together? Like make a toggle switch or something? __________________ In a world... where things squeak, wont fit,start to bleed, or are just plain hard to do.... ArmorAll will fix that

03-17-2010, 03:24 AM	#5
sqcomp Roadrunner Jr. View User's Garage Drives: 2007 Yaris S Join Date: Jan 2007 Location: Back at home Posts: 2,609	Come on man! You're in Texas...they have to have some big boy SPL rigs out there. __________________ “To argue with a person who has renounced the use of reason is like administering medicine to the dead.” ― Thomas Paine

03-17-2010, 12:00 PM	#7
talnlnky Audio Junky Drives: 08 liftback Join Date: Oct 2008 Location: Spokane, Wa Posts: 1,412	Sounds pressure just isn't that strong. I had my mazda meter over 140dB on the Termlab meter which is the stiffest and most accurate spl meter. No air bag problems... However, I couldn't get the deck to keep from skipping, The score would've been higher had the deck not kept skipping. __________________

03-16-2010, 04:10 PM	#3
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	I haven't found a spec for the force required to pop the Yaris' airbags, but the sensors are accelerometers. The CPU monitoring them must be able to distinguish between normal road bumps and vibrations and the impact force of a crash. I don't believe that a stereo system could induce force with a high enough amplitude in the proper direction to make one of the sensors think that a collision occurred.

03-17-2010, 02:09 PM	#8
90tsi View User's Garage Drives: 09 yaris Join Date: Nov 2006 Location: missouri Posts: 555	i have crushed the frontend of an 07 but my bags never deployed and my 2 12s i have ran around 132db and they never deployied. i used to have the pic of as avatar. so im sure it takes quite a bit.

03-17-2010, 02:29 PM	#9
127.0.0.1 Banned Drives: '10 Yaris5drHB+99 4runner LTD Join Date: Sep 2009 Location: NE Posts: 672	soundwaves that could set off an airbag sensor would need to be well above lethal pressures, such as from sonic-boom stun-guns called "Thunder Generator cannons"

03-17-2010, 04:24 PM	#10
Mobius1 Installer Drives: 2008 Yaris HB Join Date: Nov 2008 Location: Indianapolis, IN Posts: 42	worst question ever

03-17-2010, 10:59 PM	#11
Slick View User's Garage Drives: '09 3-Dr Join Date: Apr 2009 Location: Houston, Texas Posts: 616	Well, that's all I needed to know. Thanks for the useful and useless info :D @sq - I didn't say there was a lack of hard hitters. It's just a lack of medium hitters lol. @Mobius - there are no stupid questions... only stupid answers. __________________ In a world... where things squeak, wont fit,start to bleed, or are just plain hard to do.... ArmorAll will fix that

04-16-2010, 09:13 PM	#13
Malifabian Drives: Yaris Sedan 2008 Join Date: Feb 2010 Location: Fort Worth, Texas Posts: 12	I havent found anything in regards to sound that would make your Airbags deploy

04-17-2010, 04:24 PM	#14
goku87 Drives: Black HB Join Date: Oct 2008 Location: AK Posts: 542	I once screamed @ 126 dB. __________________ Selling: [NST Short Shift Kits] [Clazzio Seat Covers] [Carbon Fiber Shift Knob] [180mm Double Din Dash] [Replacement Stock Headlight Bulb] [Various Interior Trim Pieces]

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