Can someone explain under/overhung (1 Viewer)

[Scott Simonian]

Besides the obvious.


When a driver has a under or overhung design, what tradeoffs are expected? Sorry if this is a stupid question but I just never understood the term.

 

[Bill Fagal]

(Quoting from ht-audio.com)

"An overhung voice coil is taller than the height of the gap while an underhung voice coil is shorter than the height of the gap. Overhung voice coils are the most common. Underhung voice coils can offer the advantage of a more linear motor strength (BL product) over their excursion range (Xmax) but they are usually more expensive—especially when a large excursion is desired."

I'd sum up the major tradoffs like this:

Overhung plusses:

Inexpensive to manufacture
Easier to design for large Xmax


Underhung plusses:

More linear BL over excursion (less distortion)
Better inherent heatsinking

 

[Dan Wesnor]

This, and all you other motor question, are answered at the LSDG...

http://ldsg.snippets.org/motors.php3