I currently got two speakers without cones and four unused passive radiators, so I thought: why not use the passive radiators that are just front suspension and cones for the unused speakers?
The passive radiator weighs 60 grams which is heavy for a 6 inch woofer but suitable for a subwoofer, it is also made of iron which is unusual for a subwoofer and explains weight.
About the carbon fiber cone, it's just for comparison which one would be more suitable for the small subwoofer, at least I think carbon fiber cone is better in everything (weight vs stiffness & damping).
And about the motor (magnet), it must be able to move the cone since the original cone was more or less half the weight of the iron cone.
The passive radiator weighs 60 grams which is heavy for a 6 inch woofer but suitable for a subwoofer, it is also made of iron which is unusual for a subwoofer and explains weight.
About the carbon fiber cone, it's just for comparison which one would be more suitable for the small subwoofer, at least I think carbon fiber cone is better in everything (weight vs stiffness & damping).
And about the motor (magnet), it must be able to move the cone since the original cone was more or less half the weight of the iron cone.
Your Iron cone is quite probably an alloy of iron so as to make it malleable forming a cone shape.
----------------------------------------------------------------------------------------------------------------------------------Rick....
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No, Because the shape of the cone (diaphragm) is flat. Maybe it's not pure iron, but I think it is.
Sorry I didn't specify the shape of the cone.
Yeah, I think it must be an alloy as a thin pure Iron circle would be horrendously brittle & crack at the slightest application of force.
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Does a magnet stick to that cone?
I would expect Aluminum, not iron, but in any case, testing rules.
What brand and model are those speakers?
I would expect Aluminum, not iron, but in any case, testing rules.
What brand and model are those speakers?
Yes, magnet sticks to it.
It is a generic speaker. I don't have much information, but it is 6.5 inches, has 200 watts RMS and an impedance of 6 ohms, single coil.
Passive radiators are an alternative to bass reflex ports and are resonant/tuned, hence the extra mass (which would be too much for.a speaker I think).
Passive radiators have the force very evenly distributed across it's area, a voice coil applies a ring of force near the middle, that on a flat disc could cause vibration.
I don't know if there's a difference between "speaker" and "loudspeaker", but if we were talking about subwoofers, there was a 6.5-inch one from B2 Audio that had 76-gram mms.
Only those aluminium bronzes with iron/nickel in them I suspect. Copper is diamagnetic, aluminium is paramagnetic.