TranTL

Just wondering, I was reading the thread about Hondanews re the 06 TL.

Acoustic Front Windshield Glass was 1 of the options under Exterior.
Does Anyone know what that is

alient

I wonder if it is the new technology where they turn your whole window into a
giant speaker.
There are already plenty of commercially available speakers that is like a thin membrane that you stick on any window, and that membrane vibrate the window in a way that it creates sound and turns into a speaker.

KJSmitty

"Acoustic Front Windshield Glass" is used in the TL to reduce the amount of noise transmitted through the glass...

Now, TranTL's speaker idea would be interesting...

Actuary

TL's front window has two glasses and a thin film layer between them to keep cabin quiet. I heard downside is window is more suceptible to craks and breaks.

frenchnew

Not to pick an argument here but all cars & light trucks front windshield are made this way.

The thin film layer is a security feature meant to prevent objects from going through and also it is used by the airbag on the passenger side so as to provide support on impact.

This type of window is called laminated glass.

Best regards

frenchnew

Larry Geller

I thought we already had this, as part of the DVD-A system.

ndx2

I don't think is a new thing... I remember reading about this somewhere (although it could be from '06 articles), and someone mentioning that this is another reason to get OEM windshield replacement over aftermarket.

Ron A

The acoustic layer is separate from, and in addition to, the laminated layer. Each has its own purpose and should not be confused with each other.

This is one of the reasons the TL windshield usually costs more than most other windshields.

bluenoise

When I was first shopping for a TL, this was one of the features the salesman pointed out. He described the windshield as being thicker for better noise isolation. This was part of the same pitch as pointing out the EPS foam in the fender and the carpet in the wheel wells.

Road Rage

As an audio engineer, I would like more detail on the glass. Yes, all windshields are laminates, with a thin film of plastic - it is there to keep the glass from shattering, as the side windows will do if you rap them hard.

Other than being thicker, the only other "acoustic" glass I can imagine would be if there were a "dead air" space between the 2 layers of glass in addition to the plastic film. This was done on the sidewindows Mercedes S-class for a while - actually, the air was not dead, but used filtered, conditioned air from the HVAC system to reduce fogging. Of course, it weas expensive, prone to leaks, and even with good filtering, likely suffered from film buildup.

But what do I know - I am deceiving people, remember?

Dead air, or even using halogens, is used in the modern windows in homes, or as replacement window upgrades. I just spent ovver $30k to do our home, and the windows have a halogen, as well as "intelligent" coatings that resist UV and IR in the Summer, but allow greenhouse effect heating in the Winter - when it is quiet, I can hear them thinking! But with all I have invested in audio gear, another benefit of the "dead halogen pocket" between the panes is that street noise is dramatically lower from the inert material's resistance to transfer acoustic energy.

Remember, sound moves by compression or rarefaction of air molecules, one to the other, until it reaches our ears. That is one reason that the speed of sound in air is pretty slow. (about 1067 ft/sec at sea level at normal temps).

AcuraVic

The October Motor Trend, 2006/2007 buyers guide details the 2006/2007 TL as having "an acoustically tuned" glass windshield to cut down on road noise, and thicker door glass, and A-pillers designed with quieter aerodynamics.
3M Thinsulate, applied extensively throughout for added noise reduction.

The windshield for my 04/TL is $669.00 installed.

Also, the NSX is not dead. There is a artists pic in this issue. Motor Trend comfirm that the new NSX (probably named somthing else) will have a V-10 powerplant.

Actuary

I am pretty sure 04/05 and 06/07 windshield are same thing. We will find out in couple month when 06 rolls out.

TLXLR8S

the '04 and '05 TLs also had this same glass. its nothing new.

clsdave

The 2003 (or 2002) CL had glass change compared to the 2001 CL. Acura stated there was a increase in thickness for improved accoustics. I think it may have only been the windshield and the sunroof. From what I remember the incease was something like a 1 or 1.5 mm. Maybe they have done the same thing again.

TLXLR8S

motor trend says that the door windows have been thinkened

2_FastTLs

2004-2005-2006 all have the same glass. If you look closely enough you can see the lamination (which you are not suppose to). In the evening, park about 75-100yds away from some neon lights, then from inside the car stare at the neon and stay focused on it while moving your head slightly from side to side..... notice anything?

bluenoise

I don't know if this is the case with the TL's glass, but another way (besides a gas/vacuum space) to reduce sound transmission in glass would be to sandwich a resilient layer between the glass. If there was a layer of clear, soft silicone between the glass layers, it would certainly reduce the noise transmission.

In the studios at my work, the glass is laminated with a resilient layer. There are four 1/2"-thick sheets of this laminated glass. Each is separated by a sealed air chamber about 3" deep on average. Each sheet of glass is angled such that they are not parallel to each other. The laminated glass is deadened by the resilient layer so it doesn't "ring" when tapped. It just makes a muted "tup" sound.