Goodmans would probably give you.
Ceramic cone speaker.
The design of speaker drivers and then consequently loudspeaker boxes is the major part of our business and over the years we have driven this to some sort of perfection that attracts many of the leading speaker designers of the high end world.
The g10c is a 10 ceramic speaker with a 35 oz magnet and seamed cone.
Mechanical failure occurs through over excursion of the cone which is when the cone moves too far beyond its limits to the point of damage due to excessive power or low frequencies beyond the cabinet s or speaker s ability.
Green 4040 standard cone surround features a new ceramic magnet structure.
This came with the nib cone as standard all through the 1960 s and never the pulsonics.
It boasts an extremely articulate top end with lows that are full and round but controlled.
As for 10 speakers definitely try the 7442 model ceramic speaker.
The speaker has the traditional ceramic crunch at the end of the cone incursion but is soften by the hemp cone s woody sonic texture.
Find them mostly in marshall gear.
The infinity team developed a laminated ceramic metal matrix diaphragm cmmd material that exhibits low mass high velocity and high damping.
It is deep anodized aluminum where the anodizing ceramic penetrates up to 1 3 of the cone thickness.
If you are looking for pristine vintage american cleans and higher power handling look no further than the g10c.
Mechanical or thermal failure.
Accuton make diamond dome tweeters and ceramic cone woofers.
The first crop of speakers in the early 1950s used alnico magnets which is why some people say they sound more vintage than speakers built with ceramic magnets.
Lower cost products got a less aggressive.
This video covers every step in the re coning of a 1957 jensen p10r alnico 5 speaker from the tweed vibrolux that was featured in a recent video series.
The fast speaker motor action allows the cones to generate micro cone fine granular distortion which has an alnico like magnet sound to it.
Elacs were a popular choice at the time but they are quite bright and chimy.
Unfortunately the perfect driver does not exist in the real world so speaker designers select materials that allow them to get as close the ideal as possible.
10 alnicos are more difficult to find.
Accuton manufactures loudspeaker drivers in germany.