I remember hearing on Termpro that some Yanks (in Street and Super Street) crank their Aircon on full and run it through the de-fog just prior to a run.

The theory goes that all that cold Air will be directed up onto the Microphone tip which sits just an inch from the glass, thus slightly agitating the Mic diaphragm and gaining an increase in SPL.

Its not against the rules and has anyone tried it???, was it successful??.

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TEAM DD "In the Lanes, takin names"
Project "Full Effect" coming soon - Street SPL!!
SPL King Wagga 2002/SAS 2002
Broken window/hurt hand Wagga 2002
Best 158.4db from 2x DD9515's on TERMPRO (SAS 2002)

i have tried it, well not with air con, just with the stanard fan on max. the theory was, if you have pressure (from the fan) going up into the mic, then you make a burp with produces pressure the other way, the added pressure from the fan will give you a higher reading.

sounds nice in theory. but in reality, didn't do crap!

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2002 Holden Astra
HU: Blaupunkt Miami Beach
Front Stage: Orion XTR 6.2
Front Amp: PPI 2360 2x90
Subs: 2 x Audiobahn 1200Q
Sub Amp: JBL 1200.1
Dead Last at Drag Combat 2-3 Woofer class
Winner at BAS 161-260sq inch.

I'm thinking what rippedskin said..

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- A proud member of Team Gates - A proud supporter of the CAA SPL project

i dont think any air con fan is strong enough to actually affect the pressure readout of the mic, but i think there is merit in having a cool cabin (cool air is denser than warm air), plus, we all know the advantages of cool amps/subs!

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MEMBER OF SINISTER MOTORSPORTS CLUB
1991 MX6 Turbo
Kenwood
MB Quart
Alpine (Selling my MRV-1005's) :(
MTX
Kicker (Sold my S12L7's) :(
2nd place: Supernats 2002 (Super Street 1-2)
148.2dB and Rising!!

I dont know Guys,

I have waved my hand very gently in front of an Audiocontrol Mic and it registered as an increase.

We have one guy who has tried it, anyone else??.

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TEAM DD "In the Lanes, takin names"
Project "Full Effect" coming soon - Street SPL!!
SPL King Wagga 2002/SAS 2002
Broken window/hurt hand Wagga 2002
Best 158.4db from 2x DD9515's on TERMPRO (SAS 2002)

i'll try it again this weekend...

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2002 Holden Astra
HU: Blaupunkt Miami Beach
Front Stage: Orion XTR 6.2
Front Amp: PPI 2360 2x90
Subs: 2 x Audiobahn 1200Q
Sub Amp: JBL 1200.1
Dead Last at Drag Combat 2-3 Woofer class
Winner at BAS 161-260sq inch.

Wasnt this done at FinalBattle last year.. Cause a bloke rocked up to the lanes and all hes windows were fogged up.. Couldnt see where he was driving hehe..

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Mitsubishi 84' Colt "SPL-04U"
Small System: Kicker S12L7 - Crossfire CFA-602
Big System: 1 BIG SPL WOOFER - 2 x JBL 1200.1 (Coming Soon)
Coming Soon - Http://www.OzCarAudio.com
Image Gallery Co-ordinator - [email="Images@CarAudioAustralia.com"]Images@CarAudioAustralia.com[/email]

quote:

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Originally posted by N.O.S Boy:
Wasnt this done at FinalBattle last year.. Cause a bloke rocked up to the lanes and all hes windows were fogged up.. Couldnt see where he was driving hehe..

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Maybe that was from boiling a kettle in his car? Apparently massive humidity does wonders for SPL



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Car: '90 Nissan Pintara (sedan)
Headunit: JVC KD-SX750
Fronts: TotalRecoil Carsplit.6
Frontamp: Alpine MRV-T301
Sub: 2x Alpine SWR-1240D
Subamp: Lanzar VPro 2000D
SPL: 145.4db (Doran Test Day - 29/09/02)
"If its not quick, may aswell make it slower"

Icebreaker @ MAS was dropping .1db per burp he was doing, due to massive voltage drop, however when he put the aircon on full, he increased .1db each more run he did. But yes the yanks will do anything and everything to gain .1db i just like freeze in a can over your amp to keep them extra cool between runs,
cheers
jon

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hu: kenwood 9018
Front stage: 3-way Dls Magnesiums 6.5" with ultimate tweeters and dynaudio 9.5"
subs: Wall housing 2 x DLS sp12 d2
Amps f/s: Valve Audio class A 4 x 100 rear 2 ch running dyns
Sub stage Amp:2x Valve Audio twin monoblocks 3kwea
Power: 5 x yellow tops, 180amp alt
visual: kenwood 8" widescreen, xbox enigma 5.6" tft
Team Gates
Supporter of CAA SPL Project

Yeah, as BIGW mentioned.
I've tried the Air-Con theory to chill the air. I didn't try it on the De-fog vent though... But i was hitting like 9.5-11v in the boot over MAS weekend, with the stereo thumping away...

But at the end of the day, it's a trade off for your power running the Fan on full, which might take 5-10 amps away from another needy source (Your Amps)

But for myself, cooling the cabin i went from 141.7, 141.6, 141.5 Last run with the cabin like an eskimo's hut. 141.8dB

as you can see the voltage slowly dropping, over the runs was obvious... But the cabin temp seemed to boost the dB like .1dB - .3dB

I'll have to try the demister vent though... would depend on the car though.



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audison »»»morel Clarion{Image Dynamicsz PPI OPTIMA Stinger
Proud Member of: Team CAA | Team Gates | Team Image Dynamics | Team G-Spot

CAA Extreme Car... It's not an idea, It's a Reality...

Hmmm... I've never thought about this before but it will be efinately tested next time I'm at a comp.This theory definately has merit because I've since the day i was into SPL that my system was louder at night (with colder, denser air) than it was in the day. i cant believe I never thought about it before. Thanx Weapon!

Michael

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Car: '93 Suzuki Swift
Head Unit: JVC KW-XC770
Front Stage: Jaycar 6" 2-ways
Front Amp: Sony EXM-302
Subs: 2x Kicker Comp C15
Sub Amps: 2x Audioline AL1800
SPL: 149.3 @ Doran Pro Audio in a dirty HUGE ported box... gettin' closer to 150! Time for new amps *EXPEN$$$IVE!*...
ICQ# 125502479