GolfGTIforum.co.uk
Model specific boards => Golf mk6 => Topic started by: JellyCat on 31 October 2009, 00:38
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I’ve just done a quick forum search on this, some stuff came up but has anyone got some info on where or what it is, how it works (does it use speakers?)
This threw me, so is the engine noise is fake in the cabin? Does this mean it sounds meaty in the cabin, but like a normal golf on the outside?
Can anyone shine any light the Sound Generator?
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Only that when I asked my dealer if they could be removed, I was told no, it would invalidate my warranty.
Rolfe.
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did a fair bit of googleing yesterday evening, couldn't find any real info appart from it's electronic and manipulates sound frequencies to amplify selected sounds from the engine or exhausts, so you get the more base sounds in the cabin. Sounded good on the test drive but dealer didn't know how it works \ where it is etc.
Just has that fake feeling but hey it sounded good! (I guess it's best not to mention it to any of your mates if they comment the car sounds lol)
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sound generator? here's how it works:
1, purse lips
2, blow air
3, Result: "brrmmm brmm brrmmmmmm"
even a kid could do it :laugh:
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Is it deffinately electronicly generated? I would have thought that perhaps at certain engine speeds and loads a flap (could well be electronically controlled) would open to allow more noise into the cabin or something to that effect :undecided:
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I thought it was only the GTD that did this but I must be wrong.
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From what I gather its not actually generating anysound, just amplifying the sound into the cabin a little more than previously. Definately nothing done electronically, and from my experience sounds just like a system used in the Focus ST and VXR... only difference being VW chose to highlight it and give it a name. Sounds a similar mechanism to the flapper mod on r32's. :nerd:
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yep that's the way I read it after reading the reviews in google, seems not to generate "fake engine sounds" but clean up and amplify good ones. Also google came up with something about US Mk5 golfs having a pipe to channel sound into the cabin??? lol
I wonder if it works like Bose headphones (on some airlines you're headsets for films \ sleep etc are electronic noise canceling).
Some extacts from google searches & reviews:
"VW's engineers have fitted an electronic sound generator that amplifies specific engine frequencies into the cabin"
Also seems to be in press releases "A GTI that delivers audible dynamics with a sound generator and new exhaust system design (two tailpipes, one left and one right). A GTI that successfully transfers the tradition of the original version to the future."
Still got a bit of a buz from last weeks test drive, what ever it was sounded good, roll on 1st march! :laugh:
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Also found the following:
http://forums.vwvortex.com/zerothread?id=4542013
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The sound pipe runs behind the firewall to create a nice vrooom vrrooommm inside the cabin for the GTI.
if it is installed on your GTI, you should see the pipe running behind the firewall at the red arrow on top.
(http://img.photobucket.com/albums/v95/twelvizm/Vortex/DIY/Y%20Pipe/b8d4fb64.jpg)
You can see the noise pipe clearly in this picture running behind the firewall.
(http://i216.photobucket.com/albums/cc292/Uconndoit08/New%20York%20Auto%20Show/DSC00909.jpg)
Some people block the pipe or reroute it using the A3 pn for the TSI engine.
http://forums.vwvortex.com/zerothread?id=3715580 (http://forums.vwvortex.com/zerothread?id=3715580)
http://www.golfmkv.com/forums/showthread.php?t=44094 (http://www.golfmkv.com/forums/showthread.php?t=44094)
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Thanks bubuski, that's an excellent post! Just nipped out to see if I can spot it on my mk5 GTI, but weird can see it (guess must be no-UK versions that have it).
Will be interesting to see the new electronic one installed on the Mk6 GTI (think I'll ask the dealer to point out when I nip back to check out a car with ACC - going back to compare with and without ACC)
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what's electronic about it? looks like the same as on some bmw engines where there is pipe from the engine to the firewall - just transferring noise towards the cabin
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Reviews all state "electronic" sound generator :undecided: it's bugging me need to find out more info (will report back after talking to VW tomorrow)
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I curious too now. I will be watching this to see what you find out.
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Thanks bubuski, that's an excellent post! Just nipped out to see if I can spot it on my mk5 GTI, but weird can see it (guess must be no-UK versions that have it).
FYI
UK MK5s never got the new TSI engine from that picture, I know the yanks did and I'm guessing Germany ? ?
All UK MK5 had the standard FSI engine (which came in 2 engine codes AXX and BWA) and will look like this:
(http://stb.msn.com/i/66/911F7D184ACEFB1F6A9D6B392DBBA.jpg)
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Reviews all state "electronic" sound generator :undecided: it's bugging me need to find out more info (will report back after talking to VW tomorrow)
I bet the 'electronic' bit refers to the fact that the computer decides when to adjust an electrically driven actuator which alters the inlet air or exhaust gas path through the manifold or downpipe in some way to take advantage of a resonance. Or something.
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I'm betting it's not a pipe, nor is mechanical in nature. Technology is available that can either block out or amplifies certain sound frequencies (used on some planes in biz class - Bose headphones).
It's been around for a long time (was even demo'd about 15-20 years back on a crappy BBC tomorrows world program cancelling out sounds from a crappy Rover (i.e turn on, and it cancels out the sound waves by effectively jamming them).
Therefore you could do this in the Golf to pick and choose sounds plus amplify the nice deep and base like sounds electronically without needing anything to channel sound from the engine bay and therefore not mess up sound insulation etc etc (prob less cost to implement too).
Reviews seem to point to this, I've got a call out to dealer who's finding out more info for me.
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I'm betting it's not a pipe, nor is mechanical in nature. Technology is available that can either block out or amplifies certain sound frequencies (used on some planes in biz class - Bose headphones).
Yeah, but to output the amplified frequencies would require not only an amplifier but also a speaker. Maybe on a high end Merc or something, but not a Golf.
It's more likely they'd have a flap or a hole into a resonance chamber or something which mechanically changes the 'note' of the exhaust in a similar way to how musical wind instruments work.
without needing anything to channel sound from the engine bay and therefore not mess up sound insulation etc etc (prob less cost to implement too).
I'm sure there is no pipe or other conduit for sound into the cabin - it would make control of all engine noise near impossible. And gas the occupants. Remember too, most journalists are just regurgitating what they read in the press release.
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how it works in bimmer land in case you are interested :)
http://www.zpost.com/forums/showthread.php?p=1501071
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how it works in bimmer land in case you are interested :)
http://www.zpost.com/forums/showthread.php?p=1501071
For what its worth, it is a similar setup in my Canadian car.
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this is honestly the gheyest thing i've ever seen/heard.
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how it works in bimmer land in case you are interested :)
http://www.zpost.com/forums/showthread.php?p=1501071
In the BMW sound gen, people removed the foam out of the pipe that goes into the firewall.
I tried it on my Z4 but it was far too loud for me.
Does sound good though
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Even though this review is in Swedish, there is a picture of the sound generator at 2:40 onwards. The reviewer talks about how air flows through the sound generator to generate (duh!) the GTI sound.
http://www.youtube.com/watch?v=rBPdxBNhlK8
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lol I'm getting conflicting info (reviews says electronic \ VW press releases say electronic \ and dealer says electronic), talk about a blackbox\pipe\can't get a definitave answer \ gizmo lol!.
Hmmm might have a look at the service manuals. Bugging me but also wonder if you can adjust the noise level.
Noticed from searches that GTD has something similar.
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Has anyone disconnected/removed ths device and any info on the outcome? :smiley:
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Early MK6 GTI's had the induction pipe my 59 plate did and it sounded good and along with the dual exhaust sounded way better than my ED30 which wasn't bad either. I also love the combined soundaktor (electronic speaker) and deeper exhaust sound on my ED35 when opening it up. I have got used to the sound it makes and am happy with it and find it is not intrusive on a run, so won't be removing it.
I had this soundaktor on a Polo GTI 6R and found it ok a lower revs but when cruising at motorway speeds very annoying so I can understand if some don't like it.
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My Golf MKVI did have a certain resonating sound together with a (to me) uncomfortable switching moment on the DSG (compared to my MKV)
Believe it or not but both problems were solved as a bonus after ABT tuning......heaven again :cool: