Posted November 16, 200915 yr someone should do this with a voice coil and make the sub-woofer super efficient!!!
November 16, 200915 yr Author Cool experiment, but wouldn't work on a driver. I don't see why not as long as you can put the coil and the cone on the sub before it goes back to normal temp.
November 16, 200915 yr You'd be able to freeze it once. What would that accomplish? Once the coil heats up to operating temp, freezing it again would break it from thermal shock. You have to remember, the coil is a strand of wire wound around the former, not a single mass of aluminum or copper as the ring used in the demonstration.
November 16, 200915 yr Not to mention needing an amplifier that wouldn't burst into flames into an extremely low impedance.
November 16, 200915 yr You'd be able to freeze it once. What would that accomplish? Once the coil heats up to operating temp, freezing it again would break it from thermal shock. You have to remember, the coil is a strand of wire wound around the former, not a single mass of aluminum or copper as the ring used in the demonstration.Don't kill his dreams
August 22, 201015 yr What would be awesome is to create a sub that had a nitrogen chamber to recycle nitrogen to liquid over and over, or get some system tthat atleast makes a gas cold like a good fride style. Would make subs alot more efficient! Could maybe spend less on amps..
August 22, 201015 yr Thats pretty cool! If that worked you could have a wall of 24 subs powered by 50 watts of power and 4' of excursion! LOL
August 22, 201015 yr What would be awesome is to create a sub that had a nitrogen chamber to recycle nitrogen to liquid over and over, or get some system tthat atleast makes a gas cold like a good fride style. Would make subs alot more efficient! Could maybe spend less on amps..It wouldn't increase the efficiency of the driver, just it's cooling capacity. It would still be generating just as much heat and wasting just as much power, but with increased cooling.
September 4, 201015 yr one of the early versions of orion xtr was cooled a certain way, to early in morning to think, this is when orion was orion also back in the day
September 20, 201014 yr would it be possible to make a sub with the magnet in the middle and have the copper coils where the magnet usually is. then that way u can have hallow copper tubes with copper wired arround the tubes and have liquid nitrogen or w/e flow through the tubes cooling the copper wires. the coils will stay in the same spot and they will move the magnet when electricity flows through.
September 20, 201014 yr would it be possible to make a sub with the magnet in the middle and have the copper coils where the magnet usually is. then that way u can have hallow copper tubes with copper wired arround the tubes and have liquid nitrogen or w/e flow through the tubes cooling the copper wires. the coils will stay in the same spot and they will move the magnet when electricity flows through.a problem i could see happening is to large of a cone mass. but a good idea!
September 20, 201014 yr would it be possible to make a sub with the magnet in the middle and have the copper coils where the magnet usually is. then that way u can have hallow copper tubes with copper wired arround the tubes and have liquid nitrogen or w/e flow through the tubes cooling the copper wires. the coils will stay in the same spot and they will move the magnet when electricity flows through.a problem i could see happening is to large of a cone mass. but a good idea!just use a radial magnet (circle magnet with a hole in the center). u can then put a stationary cylindar magnet with the same or opposite polarity in the middle of the radial magnet to keep it linear
September 20, 201014 yr Admin we had a teammate a while back try this. He even cryo-froze 1/0 awg wire and all. Not sure as to the outcome of it though, he threw a big stink when we wouldn't warranty his XCONs after he was burping them @ 10k/ea and couldn't figure out why they blew lol.
September 20, 201014 yr we had a teammate a while back try this. He even cryo-froze 1/0 awg wire and all. Not sure as to the outcome of it though, he threw a big stink when we wouldn't warranty his XCONs after he was burping them @ 10k/ea and couldn't figure out why they blew lol.
November 10, 201014 yr Hmm, I would rather make a metal box on top of the heatsink on a amplifier, fill it up with nitrogen and then make it drive subwoofers at 0,1ohm or lower. It would be like clocking a computer that's nitrogen cooled. Since the amplifier get's cooled it should withstand really low loads. Kinda surprises me that no one has tried it in DB contests.
November 10, 201014 yr whats the main problem, thermal or mechanical?Thermal, because 99% of the power put through the voice coil is wasted as heat.It's very easy to mechanically control a speaker.
November 10, 201014 yr What about something like this: The green is the the tubing, liquid nitrogen would flow through. Or a more complex cooling with cooling of the magnet:
November 10, 201014 yr YOu can't use liquid nitrogen as it will freeze the part and render it brittle. There have been designs using liquids to cool the motor and surrounding parts, but the best solution to date has been air movement.
November 10, 201014 yr That wouldn't work outside of extreme stuff.. but you'd be removing a lot of metal in the motor reducing the motor strength.. which you want with high splBut most extreme stuff is 3 second burps at high voltages.
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