It's basicaly a beefed up MASS able to drive the shit out of a port (MASS drivers were designed for sealed applications). A nice 10 layer flatwind with a Kapton former, nice and light to stay snappy tight.//content.invisioncic.com/y282845/emoticons/omg.gif.05aa02c3095d6ce9338996654eca0863.gif
Gimme!
What's the model/name of those motors?
Ahh ok. What are the advantages/disadvantages of a coil that short?It's basicaly a beefed up MASS able to drive the shit out of a port (MASS drivers were designed for sealed applications). A nice 10 layer flatwind with a Kapton former, nice and light to stay snappy tight.
I was just going to ask that. It is very unusual.Ahh ok. What are the advantages/disadvantages of a coil that short?
Underhung is usually intended for very low distortion applications. Obviously, there's much less moving mass and inductance so very good for wide bandwidth use. BL is more linear than overhung so THD stays very low, but it's like a brick wall when it's done.Ahh ok. What are the advantages/disadvantages of a coil that short?
Ok. I understood the reason behind underhung, guess I just never seen a flux diagram with an underhung motor. So, with the shorter coil, the entire coil should stay within the main motor force area (don't know what that's called //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif) throughout the full stroke? As opposed to a longer coil that would have part of the coil inside, part of the coil outside on each side of it's stroke. What are the differences there?Underhung is usually intended for very low distortion applications. Obviously, there's much less moving mass and inductance so very good for wide bandwidth use. BL is more linear than overhung so THD stays very low, but it's like a brick wall when it's done.
In underhung the coil stays within the gap through the whole stroke. Original RE XXX was underhung and AFAIK MT was as well. More often used in midrange. You save mass for sure and get a very even BL curve until the coil leaves the gap. As OP stated, they're great until you get into big excursions. Big downside from manufacturing standpoint is you need a big arse top plate.Ok. I understood the reason behind underhung, guess I just never seen a flux diagram with an underhung motor. So, with the shorter coil, the entire coil should stay within the main motor force area (don't know what that's called //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif) throughout the full stroke? As opposed to a longer coil that would have part of the coil inside, part of the coil outside on each side of it's stroke. What are the differences there?