Hertz supercharger 15"

[snoopdan 5,000+ posts]

Found this on a site in europe, dunno wtf they were thinking. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Click to read more...

 

[damonhargroves 10+ year member]

thats a joke!

 

[sundownz Pro Seller]

Probably trying to increase the amount of actual air exchange by forcing the air away from the pole. A regular pole vent tends to intake the same air that it just expelled, forcing the air away will cause new air to be drawn in rather than the hot air.

Believe it or not someone has a patent on fan cooling a sub motor in a somewhat similar manner, and it actually works pretty good.

 

[LiquidClen 10+ year member]

I bet it works wonders

 

[skateboardkid 10+ year member]

they have a computer fan mounted to the back of magnet trying to blow air down pole piece vent, the subs excursion normally moves enough air, I suspect thsi is a bad to very bad idea.

I probably doesnt work, and sub prob gets hotter, this is a joke right?

 

[snoopdan 5,000+ posts]

no joke, someone installed this in their home theater setup.

Ive seen all kinds of cooling of subs though - anything from a/c lines run directly to the motor structure to water cooling. None are a bad idea, just kinda goofy.

 

[audioholic 5,000+ posts]

Probably trying to increase the amount of actual air exchange by forcing the air away from the pole. A regular pole vent tends to intake the same air that it just expelled, forcing the air away will cause new air to be drawn in rather than the hot air.
Believe it or not someone has a patent on fan cooling a sub motor in a somewhat similar manner, and it actually works pretty good.

Wouldn't it be better to have cross-flow forced air? Half the time the speaker is trying to force air into the pole vent, and half the time its forcing it out. So logic would seem to say the fan would be hurting half the time, if its blowing directly into, or out of, the vent.

 

[sundownz Pro Seller]

Wouldn't it be better to have cross-flow forced air? Half the time the speaker is trying to force air into the pole vent, and half the time its forcing it out. So logic would seem to say the fan would be hurting half the time, if its blowing directly into, or out of, the vent.

The patented approach works a bit differently than this implementation to encourage flow in a more productive manner -- but I think the idea this guy had was to try to get some kind of advantage in cooling, significant or not.

 

[audioarsonal 10+ year member]

Wonder if the fan runs in the same direction or if it changes with the flow of air.Looks like they have power leads so I am assuming its one way?

 

[Immacomputer 10+ year member]

I'm sorry, did he also tie the fan leads in parallel with that speaker wire going to a voice coil? Am I blind or did he really do that?

 

[audioholic 5,000+ posts]

Wonder if the fan runs in the same direction or if it changes with the flow of air.Looks like they have power leads so I am assuming its one way?

If it didn't have power leads, it would be a 'passive' fan which wouldn't help with air flow, it would hurt it abit.
It would be impossible to get a fan like that to reverse polarity/direction in upwards of 80 times a second. Clearly its a one-way powered unit.

 

[audioarsonal 10+ year member]

If it didn't have power leads, it would be a 'passive' fan which wouldn't help with air flow, it would hurt it abit.
It would be impossible to get a fan like that to reverse polarity/direction in upwards of 80 times a second. Clearly its a one-way powered unit.

I know it wouldn't be powered and switch.I thought the air flow itself woud turn the blades as it pushed or pulled kinda like a pinwheel.

 

[audioholic 5,000+ posts]

I'm sorry, did he also tie the fan leads in parallel with that speaker wire going to a voice coil? Am I blind or did he really do that?

LOL yeah you're right, didn't notice that. Wonder how that fan would enjoy the fluctuating voltage. lol Gotta be a joke picture, I doubt that would even work now that you mention it. The fan would burn up rather quickly Id think.

 

[audioholic 5,000+ posts]

I know it wouldn't be powered and switch.I thought the air flow itself woud turn the blades as it pushed or pulled kinda like a pinwheel.

A pinwheel is a 'passive fan'. Adding pinwheels to your yard wouldn't make the wind blow faster, they would actually impede the wind slightly. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[audioarsonal 10+ year member]

I'm sorry, did he also tie the fan leads in parallel with that speaker wire going to a voice coil? Am I blind or did he really do that?

I don't think there tied together.