4 18s in a wall, 94 astro

[GAM3OVR 5,000+ posts]

oy, that's one big woman

heh, I dont discriminate when I'm plastered.

 

[mlstrass 5,000+ posts]

Throw her in the port

I prefer to throw it into her port //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Pic isn't bad, some of us like em a little thick. They can usually take a punch //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif

 

[GAM3OVR 5,000+ posts]

I prefer to throw it into her port //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
Pic isn't bad, some of us like em a little thick. They can usually take a punch //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif

Here I uploaded a few more

Oh and the jail bait //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[GAM3OVR 5,000+ posts]

hope that gets you more positive posts //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[PV Audio 5,000+ posts]

This is 50% male.

 

[TnT_Sounds 10+ year member]

hey *******, i have an astro van with 4 18s doing a 155.2 sealed on the glass with your garbage Termlab doing the metering, will be in the 60-s with new amp. and if you dont think that my 16 mids and 16 tweets im putting in on top of the 8 mids and 8 tweets i got now will help in that number, then you are a serious ASSCLOWN

How much power did you have to hit 155 and how much will you have to hit 160? Normally doubling the power is a 2-3dB gain, so you better be adding a shitload more power if you plan on gaining 5dB's.
Or you could just add more mids and tweets to hit that number //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

Got any vid proof of the claimed 945# squat?

You do come off as young and immature on here, but you're probably a cool guy in person. If I make it out to Denver next summer to visit my mom (lives in Hyland) I'll look you up and some of the other Denver area members. Would be nice to bring the Altima out to battle with your van //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Thats all still a half-truth at best, concerning the "2-3db gain by just doubling power or cone area". Let alone adding more midrange:laugh:

One of the biggest problems on car audio forums is that people try to apply the dynamics from one environment within another. Classical horn theory, transfer theory, quarter-wave theory, standing wave theory, etc... I can see how this could happen, as just about every book and web site out there that tackles the dynamics of sound is written from a home audio / infinite environment perspective. Exporting these principles into contained environments (i.e. vehicle cabins) is kind of like attempting to build a flying machine on Mars by reading about the design principles behind the flying machines on Earth.

What I'd like to attempt here is to illustrate the problem with the theory that doubling your power results in a 3dB gain. This theory was never intended for low efficiency drivers, high gain environments, and high current applications. As most other theories mentioned above, this one has it's roots elsewhere. Think of infinite environment low current sound reproduction systems and 1 meter on-axis benchmarks where the first watt is always the most important watt... you may begin to see why this theory falls apart when applied to car audio.

Let's take a relatively inefficient woofer with a 1W sensitivity of 80dB and start doubling the power, each time resulting in a 3dB increase:

You see what's happening? By this principle, over a million watts would be required just to achieve 140dB. More importantly, take a look at the distinct curvature of the plot. Since the (W*2)=(dB+3) formula is fixed, so is the nature of the plot, no matter where we start in regard to power or efficiency.

But let's improve our odds by starting out with a subwoofer system that's a whopping 100dB efficient at 1W:

We still need about sixteen thousand watts just to break 140dB (and well over a hundred thousand watts for an additional 10dB.) See the problem? Visually, we can isolate it to the vicinity of where the curve begins to bend into a near-flat line. Suffice it to say, this is an extremely misleading and erroneous way to look at the effects of power on the SPL product, especially once we've gone several orders beyond the magnitude of ~8, and even more so at the point where, mathematically, the gain to raw power ratio is virtually unchanging.

Is a lot to read, but it virtually elimnates all theories concerning the doubling affect:fyi:

 

[TnT_Sounds 10+ year member]

This is 50% male.

x2

 

[twistedchild420 5,000+ posts]

This is 50% male.

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif:laugh://content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[plugitin 5,000+ posts]

now this thread is getting worse...transvestites //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[GAM3OVR 5,000+ posts]

maybe thats a bad pic of her, I'll find somethin better

 

[TnT_Sounds 10+ year member]

maybe thats a bad pic of him, I'll find somethin better

fixed:

 

[plugitin 5,000+ posts]

fixed:

ahahaha

 

[GAM3OVR 5,000+ posts]

lolz

 

[CranberryYumYum 10+ year member]

i don't mind more mass but i prefer the kind that you can break in half

she was cute but talk about annoying bitch

here's a close-up

 

[MikeyB 5,000+ posts]

Now this thread is starting to deliver some funnies hahaha