Sundown Pro audio drivers?

[sundownz Pro Seller]

The price is in fact each -- they are Neo based drivers and the cost is high for Neo mags. I wouldn't want to put 8+ of these in a door with Ferrite mags; dunno about you guys //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Toyota Gets Crafty with Hybrids to Break Ties with China - Rumor Central

"The price of neodymium has quadrupled over the past year alone."

 

[Bassin Buick]

i wonder if there is a way to create a motor for a speaker without ferrite or neo? i mean i always thought an electric motor required a magnet to operate but someone has figured out a different way. I wonder if this technology could be used in the speaker business?

 

[*SlappinAzz*]

i wonder if there is a way to create a motor for a speaker without ferrite or neo? i mean i always thought an electric motor required a magnet to operate but someone has figured out a different way. I wonder if this technology could be used in the speaker business?

explain more please?

 

[Bassin Buick]

read the link jacob posted. They figured out how to build an electric motor for the hybrids without the use of rare earth metals.

 

[sundownz Pro Seller]

You can use two coils -- one for the field and one to move -- that has been done in loudspeakers before. Of course two coils gives you another failure point.

 

[*SlappinAzz*]

You can use two coils -- one for the field and one to move -- that has been done in loudspeakers before. Of course two coils gives you another failure point.

why is this method even brought up then. Obviously magnets are proven to be the way to go.

 

[sundownz Pro Seller]

I'm not a big fan of it -- but I do see it come up on the forums quite a bit these days.

You can do some cool stuff with extra coils in motors... like a counter-coil to achieve effectively negative inductance.

 

[*SlappinAzz*]

I'm not a big fan of it -- but I do see it come up on the forums quite a bit these days.
You can do some cool stuff with extra coils in motors... like a counter-coil to achieve effectively negative inductance.

This would work even for subs? "even at high power ratings?

 

[sundownz Pro Seller]

This would work even for subs? "even at high power ratings?

You would burn it up at high power.

Typically used on mids -- you can create a rising high-end response rather than a dropping due to inductance.

 

[Haunz 10+ year member]

i mean i always thought an electric motor required a magnet to operate but someone has figured out a different way.

You are kidding, right ?

As stated drivers using field coils have been done before. The main advantage is that you can get a lot more flux with a field coil then you can with a regular magnet. Also because there are no weight restrictions as with a voice coil a large electromagnet with a high turns ratio can be used, which can develop a large magnetomotive force with a relativley small amount of current.

The only disadvantage is that the manufacturing costs are going to be much higher, and the driver would require a seperate power supply... this is why you don't see speakers made like this today...

 

[Wingman0121 10+ year member]

Electromagnets only has magnetism when electricity is applied to it, so yes a sub can have electomagnet motors but that's another thing that needs power and lots of it.

China Y U NO SELL CHEAP MAGNETS

 

[Bassin Buick]

You are kidding, right ?



As stated drivers using field coils have been done before. The main advantage is that you can get a lot more flux with a field coil then you can with a regular magnet. Also because there are no weight restrictions as with a voice coil a large electromagnet with a high turns ratio can be used, which can develop a large magnetomotive force with a relativley small amount of current.

The only disadvantage is that the manufacturing costs are going to be much higher, and the driver would require a seperate power supply... this is why you don't see speakers made like this today...

No clue , did not know this was possible.

 

[RAM_Designs 5,000+ posts]

like a counter-coil to achieve effectively negative inductance.

I likey.

 

[stevenbasshead1 10+ year member]

Jacob is freaking smart.