When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I searched but couldn't find much in the way of an answer.
Do we have any clear details on the 992 Sound Symposer and what it entails? Is it a similar system to the 991? Does it involve any electronically generated sound like the 718 models?
The noise generator in my 992 is this big heavy metal thing in the back of my car. The volume control is located under my right foot. For some reason, it needs to be serviced every 10k miles. The faster I go, the louder it gets. Anyone else experience this? Between this and the nubbin, how does anyone live with this car? 🤪
I searched but couldn't find much in the way of an answer.
Do we have any clear details on the 992 Sound Symposer and what it entails? Is it a similar system to the 991? Does it involve any electronically generated sound like the 718 models?
Thanks.
To my knowledge, the sound symposer is actually just 2 "holes" (in a way) between the cabin / firewall that pass through actual engine sound. They are not electronic and none of the noise is "generated".
Originally Posted by trayvon
The 718 involves "electronically generated sound"? This is the first I am hearing of this.
Yeap - some say the GTS doesn't have it? But I've seen cases of both. There's an eletronic "soundaktor" that generates fake engine noise through a small speaker in the cabin (hidden under some carpeting). It uses the engine firewall to reverberate it.
You can pull a fuse - or actually disconnect the box for it - to disable it without any adverse effect.
It's a pipe percolating sound generated by a diaphragm, which vibrates in tandem with the exhaust. It's a way to pipe the sound and not gases in the cabin.
Nothing electronic. It's louder on 992 than 991.2. Once I change header and/or cats, it's coming out or will be blocked.
Electronically generated sound was not the case in the 991 and .2 generations. The symposer was just an open tube from the engine compartment to the cabin.
Are you all sure there is a speaker with "fake" sound in the 992?
Electronically generated sound was not the case in the 991 and .2 generations. The symposer was just an open tube from the engine compartment to the cabin.
Are you all sure there is a speaker with "fake" sound in the 992?
To my knowledge there is no electronic enhancement in the 992; same as the 991.
The 718 is a different story; it definitely has an electronic soundaktor device.
To my knowledge, the sound symposer is actually just 2 "holes" (in a way) between the cabin / firewall that pass through actual engine sound. They are not electronic and none of the noise is "generated"..
Are we 100% sure? I'm looking for solid details on the system.
Originally Posted by John Mclane
It's a pipe percolating sound generated by a diaphragm, which vibrates in tandem with the exhaust. It's a way to pipe the sound and not gases in the cabin.
Nothing electronic. It's louder on 992 than 991.2. Once I change header and/or cats, it's coming out or will be blocked.
Do we have details of where the system is like we did on the 991?
Originally Posted by Penn4S
Electronically generated sound was not the case in the 991 and .2 generations. The symposer was just an open tube from the engine compartment to the cabin.
Are you all sure there is a speaker with "fake" sound in the 992?
I'm aware of the 991's system. But I'm not sure at all what the 992's system entails. We know for a fact that Porsche is doing the electronic "soundaktor" (to steal their term from VW) on some, if not all, the 918 cars. I have no idea either way what's going on with the 992, I'm genuinely curious. But I am suspicious. People are saying that the car sounds really good inside, and also from videos I've watched, I would agree. But that's not easy to do on the turbo motor...even the PSE equipped 991.2's I've driven have been very muted compared to my 991.1. So i wonder how they've changed the system. I really hope they just re-did it and still use the tubes. But if the tube was connected to the intake, you'd hear a lot of turbo spool noise, not engine grumble.
So I'm curious. That's why I'm asking for an actual system diagram / drawing like we had for the 991's.
Even so, the sound symposer first installed on the 991 series has added a second, switchable channel behind the rear trim panel to pipe more aural sensation into the cabin.
So it appears the 992 DOES have the SS ....FYI....
Has anyone dug around in their 992 to find the sound Symposer? I ask because I have the soundaktor in my 718, which sounded terrible, so I pulled the fuse to much relief.The funny thing is, once I did that, there was almost no perceptible difference in engine note with PSE on or off, other than the burbles / farts, take it or leave it. Before pulling the fuse, the noise would leave my ears ringing after a long drive.
Porsche info on the 992 sound symposers: 992 has two sound symposers. Engine load varying pressure differences upstream of the throttle valve vibrate a diaphragm in each symposer, which causes engine sound to be piped into the cabin. The left symposer is always active. The right symposer can be activated when required via an electropneumatic converter, in Sport and Sport+ modes, and overridable by the Sport exhaust button.
Next to the oil filter cap you can see one of the pipes. The connector to the intercooler box is right in the middle. From there you can follow towards the cabin. The top of the picture is towards the rear.
10-25-2019, 10:39 AM
992 Sound Symposer
