The discussion revolves around the design and engineering of field coil loudspeakers, focusing on the materials used for magnetic coils, particularly soft magnetic materials versus permanent magnets. Participants explore the implications of magnetic flux density, current requirements, and the historical context of loudspeaker technology.
Participants express multiple competing views regarding the effectiveness and practicality of field coil loudspeakers versus permanent magnet designs. The discussion remains unresolved, with differing opinions on the significance of magnetic flux stability and the implications of using various materials.
Some participants highlight the need to consider factors such as copper mass, power consumption, temperature limits, and insulation in the design of loudspeakers. There are also unresolved technical definitions and claims regarding ferromagnetic properties and the aging of magnets.
Can you use the "Attach files" link below the Edit window to upload a diagram of this arrangement? How can you have a voicecoil on a toroid? Thanks.arivel said:I realize that there are many questions to answer and therefore I don't expect to get all the answers but I would like to get the answer to just one question, I don't think I'm asking too much.
what happens if I put two metals with different magnetic saturation but different or equal magnetic permeability in contact?
the metal with higher magnetic saturation is used to generate the magnetic field through the copper coil while the second metal with lower magnetic saturation is used to channel and close the flux of the magnetic field in a toroidal ring so as not to disperse it in the surrounding space.
I would like to know how the characteristics of the magnetic field that passes through two different metals change.