Frozen Subwoofer Testing Results

[jeremiah 10+ year member]

Good info............I could send you a 12" L7 to mess around with //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

i'll take it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[CBFryman2 5,000+ posts]

shits pretty cold on the hand

I dont know exactly how cold it is. But it freezes warts just as good as the liquid nitrogen the docters office uses.

 

[carguy83 10+ year member]

I dont know exactly how cold it is. But it freezes warts just as good as the liquid nitrogen the docters office uses.

The stuff inside those cans is just tetrafluroethane. That's your common R-134a refrigerant.

 

[Immacomputer 10+ year member]

Link to sub tested?

 

[CBFryman2 5,000+ posts]

The stuff inside those cans is just tetrafluroethane. That's your common R-134a refrigerant.

Gay. I though the boiling point would be below 200k at least.

So use liquid methane and dont light a match. //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif

 

[BassAce 10+ year member]

http://www.zaphaudio.com/temp.html
But like I said in the other thread, once you have applied some power, your "warm" parameters should be normal.

Neil

Interesting, I didn't figure that the impedance would drop that low when the temperature drops.

 

[bigbassman Premium Member]

Link to sub tested?

http://www.profilecaraudio.com/speakers.htm

3/4 down the page... look for the red surround

Loyd L.

 

[CBFryman2 5,000+ posts]

Interesting, I didn't figure that the impedance would drop that low when the temperature drops.

If you could cool the copper coil cold enough you would have a theoretic DC resistance of 0ohm and therefor all impeadance would be above where inducance begins to take an effect.

 

[bigbassman Premium Member]

we used to cram our motors full of dry ice at shows..

gained a good bit from it.. due to the impedence shift..

that was back in the days when I had a port I could fit in //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Loyd L.

 

[JimJ 5,000+ posts]

that was back in the days when I had a port I could fit in

Double meaning?

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif//content.invisioncic.com/y282845/emoticons/inlove.gif.6846f78f06b405429ef3a00129788a2a.gif

 

[NDMstang65 10+ year member]

we used to cram our motors full of dry ice at shows..
gained a good bit from it.. due to the impedence shift..

that was back in the days when I had a port I could fit in //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Loyd L.

a port that I could fit in //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[bigbassman Premium Member]

well.. you're an extension of me... so I was technically correct!

bastage

Loyd L.

 

[mattmcss 10+ year member]

I thought the common problem from the freezing air was from condensation buildup on the VC from it being hot/cold/hot/cold quickly.

I say, run it tomorrow for a while, let it sit outside all night, then pull it apart and take a look at the VC

 

[Ctminime 10+ year member]

inrteresting stuff....

 

[bigbassman Premium Member]

water isn't an issue..

the wire is annodized... which is a non conductive material.. stick anything on the coil you like.. as long as the annodization isn't rubbed off, and wire doesn't touch wire.. it'll keep playing...

I completely soaked a paper towel from removing moisture from the exterior of the motor during / after the 8 hour freeze test... notta issue.. at all

Loyd L.