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Exhaust Note Recording Party
#21

[quote name='Mark' post='47982' date='Feb 22 2008, 06:52 PM']The parts of the driveway I have to use to get from the garage ot the street look good now. It is raining/drizzling but if it is just a glaze of ice in the morning I'll spread chemicals and ge the car out. I'll post up in the morning to confirm but it looks good now.



How's the parking lot at your place Darryl?[/quote]



Essentially bare...no problems!
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#22

Man, it's not even worth editing my post with all of those typos quoted above.
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#23

We are having rain as of right now with the temps hovering at 32deg.

I am not sure if I am in or out at this point.
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#24

Other than the sidewalks and a few flat areas of the driveway that never see the sun I'm OK on ice this morning, so I'm a go! The dog and I were able to walk up and down the hilly parts with no problem and the streets look fine as expected.



Just checked the forecast which has changed a bit from last night with freezing drizzle in the am and wintry mix in the PM, maybe not a good idea after all. <img src="/forum/images/smilies/968/sad.gif" class="smilie" alt="" />



I wish I could have a job like TV weatherman where I could basically just make wild ass guesses, last one I heard said no problem except possibly up by the Pa border.
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#25

I'm leaving for the office now...if anyone decides not to come by, remember I'll be around tomorrow as well. I'm hoping the wintry mix holds off as I have lots of other stuff going on today as well, so that will suck much.



waether.com for 20164 says only 30% chance so I'm thinking positive...glass is 2/3 full.



- Darryl
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#26

I'm getting some breakfast and will be heading out after that, I really need ot get to OG anyway.
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#27

<img src="/forum/images/smilies/968/sad.gif" class="smilie" alt="" /> I am still sitting with an icey country road.
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#28

Back from the exhaust recording party. My cooling problem got worse as I had steam coming from the motor. No drips from the HCV, it seems to be coming from below as it can't be seen from the top of the car.

Funny thing I had no "steaming" on the way home and the water temp held up. What's happening?
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#29

It was chilly out.

After falling on my ass on the ice twice I got the car out of the garage. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />

   



A couple of pictures of the mic setup





   



   



   





ahh I've maxed out the size limit time to resize.
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#30

OK, got some good recordings. I was going to post the raw files and still may but I want to do some editing. We did idel, 3K, 5K and some revving, but at 5K, you mostly hear the engine - not the exhaust. The idle sound is great as is the revving, so that's likely what I will post. Stupid me left the CD in my work computer, so I'll have to wait to post the results - sorry.



I'm glad Mark snapped a couple of quick pics...I forgot to take one of the recording setup.



This was a good trial run for me as now I know a little better of what to expect and have some other ideas on mic technique and another hairbrained idea about setting up for an actual drive which should produce some awesome results with the car under load doing whats it's supposed to. I also only used one set of mics and would like to experiment with a couple of different types, so I'll play more on my own and then when there's no chance of crazy weather, we'll do this again!



- Darryl
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#31

I applaud and thank you for your time and all your effort. Great idea. The anticipation is killing me. If this was simply a trial run, I cant wait till the real thing is done in the months/weeks to come.
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#32

OK guys and gals...I have the edited clips done. Having trouble posting them here probably due to the file size. I'm going to post them on my site and link to them, so I'll post here when I get that up.



There are big differences between the three and now that I've done this once, I have some other ideas to try and would love to be able to get a bigger variety so we can put together some sort of archive here.



There are two things of note to point out...on the stock OEM, there is a small rattle that is just something loose and on the B&B there is a short flutter noise which was the wind kicking up. I puposely did not use windscreens on these particular mics to get a more raw sound and didn't want to muffle anything in any way, but as I mentioned, these results now give me more ideas.



Bottom line, I think these recordings came out great and definitely demonstrate the differences. Both the RSBarn and B&B cars have the air box mod...stock car does not.



Enjoy!



- Darryl
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#33

i look forward to hearing them



yeah - i knew you'd get noise without a zeppelin or at least a sock - the high frequencies lost are minimal, but the rumble that usually happens is intolerable



lol - not so easy as it seems, eh? that's why i didn't post my other ones - similar "issues" - probably wouldn't be noticed by the layman, but as a sound guy, it made me nuts - i knew i could do better than what i got



oh well - another reason for a get-together, right?
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#34

I WILL NOT miss the next one.
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#35

For the time being, they're here:



www.darrylnichols.com



from the home page, click on the 968 link.
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#36

Hmm, its true that the wind makes it tough to listen to at times because the sound almost cuts out, but I got what was going on well enough.



Stock, compared to B&B and RSBarn sounds really quiet!

B&B has a great tone with lots of bass, stock headers I'm assuming? Sounds really nice <img src="/forum/images/smilies/968/biggrin.gif" class="smilie" alt="" />

The RS barn exhaust sounds like its got quite a bit of rasp, at least from what I can hear when revving. The 3K rpm and idle sound fine though. Is it the headers that are the main cause of that? Or cold exhaust?



Thanks for the effort in all of this btw! Looking forward to future recordings <img src="/forum/images/smilies/968/biggrin.gif" class="smilie" alt="" /> We should start a new thread (or some gallery section) with all this media.
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#37

lol - working on it - will post as soon as i figure out the hosting of the files
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#38

[quote name='Renalicious' post='48269' date='Feb 27 2008, 01:21 PM']The RS barn exhaust sounds like its got quite a bit of rasp, at least from what I can hear when revving. The 3K rpm and idle sound fine though. Is it the headers that are the main cause of that? Or cold exhaust?[/quote]



Definitely the header and possibly combined with cold exhaust as the car had been sitting for awhile(90 minutes or so in 36 degree weather) before the recording.



They all sound better under load rather than sitting in a parking lot revving. Standing there, all I could hear was the scream of the engines and very little of the exhaust.
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#39

[quote name='Mark' post='48272' date='Feb 27 2008, 02:08 PM']They all sound better under load rather than sitting in a parking lot revving. Standing there, all I could hear was the scream of the engines and very little of the exhaust.[/quote]



That's actually one of the goofy ideas I'm toying around with is how to isolate the engine from the exhaust for the next series of recording attempts...
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#40

I had that problem too. Noticed there was too much engine noise coming through. I had my mic on the passanger side, about 2 - 2.5 feet off the ground pointed down. Maybe eight feet back? It seemed to help a bit. Flash, any insight on the best mic positioning?
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