Round vs Oval shape

[basite]

I remember square speakers produced by Sony at one time or another. Mebbe I was put off by their appearance or soething, but they just didn't sound right....Shoulda done a blind A-B, but that's retrospect fer ya...

oh, you mean the APM series?

check www.thevintageknob.org for more information on them btw

never heard them, but they were a little different in design from the square designs used today (all of them are in car audio, I presume they think it looks cool or so...), and from the oval designs...

the sony's were different, regular drivers use 1 magnet, in the center of the driver, so the voicecoil pushes the driver forward, so it's 'balanced'
the sony's had 5 magnets & 5 voicecoils, (or 4...) one around each corner, and one in the middle too with larger drivers. So the pressure was about the same everywhere on the driver...

this is, I think, where oval drivers could introduce more disortion (when bad designed), ther would be no difficulties if the driver had a oval voicecoil & magnet (the whole thing would have to be oval, not just the cone...), but this is almost impossible. So they use round systems, in this case the sides have less resistance from the surrounds than the top & bottom of the driver, so the drivers are more prone to disortion...

(I think...), I know it isn't that well explained, but somehow I found this to be more difficult in English than in Dutch (my native language...)

Keep them spinning,
Bert.

[GMichael]

oh, you mean the APM series?

check www.thevintageknob.org for more information on them btw

never heard them, but they were a little different in design from the square designs used today (all of them are in car audio, I presume they think it looks cool or so...), and from the oval designs...

the sony's were different, regular drivers use 1 magnet, in the center of the driver, so the voicecoil pushes the driver forward, so it's 'balanced'
the sony's had 5 magnets & 5 voicecoils, (or 4...) one around each corner, and one in the middle too with larger drivers. So the pressure was about the same everywhere on the driver...

this is, I think, where oval drivers could introduce more disortion (when bad designed), ther would be no difficulties if the driver had a oval voicecoil & magnet (the whole thing would have to be oval, not just the cone...), but this is almost impossible. So they use round systems, in this case the sides have less resistance from the surrounds than the top & bottom of the driver, so the drivers are more prone to disortion...

(I think...), I know it isn't that well explained, but somehow I found this to be more difficult in English than in Dutch (my native language...)

Keep them spinning,
Bert.

Made perfect sense to me. And I agree with you and Kex. Oval would not be my first choice, but could be helpful in tight spaces. It would help to know where and how they may be used.