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Sonic Electronix

Why does my car like the windows open?


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Posted

My system is in my signature. I score 3-4 dB louder with my windows all the way down....Is this because I peak at my enclosures frequency (34-36 hz) and not anywhere near my cars resonance frequency (44-47 hz)?

I am soon running a Warden 21 (daily "groundpounder") and would like to do a few competitions now and then. So I would like to know how to get better scores sealed up at lower frequencies.

Thanks SMD

(Moved to a more appropriate section instead of the sundown area.

Team SMD)

2011 Ford Ranger Sport 4.0 v6

2 sundown audio prototype nsv4 15s

crossfire 4k wired to 0.4 ohm

15 banks of maxwell 3.0 caps @ 18v

triple alts (x2 us alt 250's, x1 singer 320)

153 at 23hz

Posted

Im mobile so i cant see ur sig are you in a car? If so you sealed off?

145.9@40hz

145.3@34hz

big 3

X2 group 34

Deka Group 31

All 0/1 awg jl meta wire

Alpine CDA 7894

Orion HCCA D5000

2 AQ HDC312's

Crunch gpv1100.2 (for 6.5"s only)

AQ pro audio 6.5" - 3 sets

AQ supertweeters - 2 sets

2000 Slamry

Posted

There's a bunch of factors, but this is actually really common. Typically its just a combination of the enclosure and the car itself. Its kinda hit and miss on predicting it and controlling it, so if you wanted to change that circumstance then you'd have to do trial an error.

My car is the same way, but not that dramatic.

i resolve to be a nicer moderator.

Tercel build R.I.P.

Eclipse build Old New

V-Dub

My feedback.

Posted

Im mobile so i cant see ur sig are you in a car? If so you sealed off?

Nope I am non-walled in the trunk space of a hatchback (Hyundai Tiburon GT 2006). I am running an IA Warden 15" off of a SAZ-4500D at 0.7 ohms nominal. The enclosure is 3.75 cubic feet tuned to 30 hertz.

It should be known this set up has been removed from my car and plan on running an IA Warden 21" in about 9 cubes, once again also non-walled but the enclosure will be in the backseat with a big aero facing the trunk.

2011 Ford Ranger Sport 4.0 v6

2 sundown audio prototype nsv4 15s

crossfire 4k wired to 0.4 ohm

15 banks of maxwell 3.0 caps @ 18v

triple alts (x2 us alt 250's, x1 singer 320)

153 at 23hz

Posted

mine meters louder with the windows up, dunno why

2012 Ford Ranger:

Build comming soon!

  • Kenwood DNX-6160
  • DC 175.4
  • 2 sets of O2 AR63 3-way Comps

Posted

mine meters louder with the windows up, dunno why

It's just fuerd trying to be different again is all. LOL :drinks:

Next time she tries to punch you in the stomach, whip your wiener out and chase her around. Show her who's boss.

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