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Does the rule of octaves apply for spl?


IH8PunkRok

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Well, halfway between 47 and 66 is 56.5 so maybe tune it around there?

i dont think that would help

but then again i dont really know

-Matt

2005 Dodge Magnum RT
JVC KD-AVX1

2 PPI S580.2

Obsidian Audio ST1 Horn Tweeters

PRV 8MB450s

Audio Legion 3500.1D

2 RE MT 18s

360 ah LiFePO4 Battery
SHCA 2/0

155.2 @ 29 hz



Kicker CVR 15's build
DD 3512e build
Mini T-Line Build
(6) 8s Build
Nightshade 15s Wall Build
Magnum AB XFL 12s Build
Newest Magnum Build

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At least I'm not the only one measuring wavelengths in my car haha!!

What is your box tuned to? Have you ran sweeps in your car with a sealed box to try to see where the cabin gain is the highest?

Have you tried 21Hz? :huh2:

MECA you can run with a door or window open and that usually helps a lot with the lower frequencies.

How much experimenting have you done with what doors/windows to open and how much to open them at different frequencies. When you open something, you are turning your car into a 6th order box pretty much, with the opening being the port and the cabin as the second chamber.

Also, depending on where you open the car up, that helps push the pressure pockets around. If air is moving where the meter is, that's a bad thing.

2012 North American Street Stock Runner-up - 150.9 on 1800 clamped watts (Teammate)
2013 dB Drag Street Trunk World Champion - 153.9 on 3200 clamped Watts (Teammate)
2013 MECA Trunk 1 World Champion - 152.8 Headrest (Teammate)
2013 MECA Park & Pound 2 World Champion - 130.6 (Teammate)

Checkout our build and videos !! : ) 150+ Trunk Build Log itsgordy1 youtube channel (click for Hairtricks)

Smith's Custom Seats
Martinsburg, PA

(Second Skin Dealer)

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I've done tons of testing but I can't remember most of them lol

Drivers door open back seats down is my loudest

As far as testing peak I have not. I probably should but like I said my tl moved to cali for two months

I haven't tried 21. That's stupid low and stupid long

-Matt

2005 Dodge Magnum RT
JVC KD-AVX1

2 PPI S580.2

Obsidian Audio ST1 Horn Tweeters

PRV 8MB450s

Audio Legion 3500.1D

2 RE MT 18s

360 ah LiFePO4 Battery
SHCA 2/0

155.2 @ 29 hz



Kicker CVR 15's build
DD 3512e build
Mini T-Line Build
(6) 8s Build
Nightshade 15s Wall Build
Magnum AB XFL 12s Build
Newest Magnum Build

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Haha you gotta write that shit down lol. I always forget too.

What class do you compete in?

If it works, it works, no matter what the wavelength.

We did a 17 Hz run at a MECA event one time...it was pretty cool!! Was funny when the judges looked at the TL to see the frequency :runlaugh:

2012 North American Street Stock Runner-up - 150.9 on 1800 clamped watts (Teammate)
2013 dB Drag Street Trunk World Champion - 153.9 on 3200 clamped Watts (Teammate)
2013 MECA Trunk 1 World Champion - 152.8 Headrest (Teammate)
2013 MECA Park & Pound 2 World Champion - 130.6 (Teammate)

Checkout our build and videos !! : ) 150+ Trunk Build Log itsgordy1 youtube channel (click for Hairtricks)

Smith's Custom Seats
Martinsburg, PA

(Second Skin Dealer)

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ill be doing S1 and i wont be happy until i get a 50

however im anticipating a rule change that might make that very difficult

-Matt

2005 Dodge Magnum RT
JVC KD-AVX1

2 PPI S580.2

Obsidian Audio ST1 Horn Tweeters

PRV 8MB450s

Audio Legion 3500.1D

2 RE MT 18s

360 ah LiFePO4 Battery
SHCA 2/0

155.2 @ 29 hz



Kicker CVR 15's build
DD 3512e build
Mini T-Line Build
(6) 8s Build
Nightshade 15s Wall Build
Magnum AB XFL 12s Build
Newest Magnum Build

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One 12 and a 40 amp fuse correct? 0-550?

Yea 150 would be crazy good in that class. What are the top of the pack doing currently?

2012 North American Street Stock Runner-up - 150.9 on 1800 clamped watts (Teammate)
2013 dB Drag Street Trunk World Champion - 153.9 on 3200 clamped Watts (Teammate)
2013 MECA Trunk 1 World Champion - 152.8 Headrest (Teammate)
2013 MECA Park & Pound 2 World Champion - 130.6 (Teammate)

Checkout our build and videos !! : ) 150+ Trunk Build Log itsgordy1 youtube channel (click for Hairtricks)

Smith's Custom Seats
Martinsburg, PA

(Second Skin Dealer)

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