Anyone see new BTl?

[Megalomaniac]

Anyone see new BTl?













~pictures courtesy of meade from SMD~


Didn't read all the posts after meade posted the pics; but i must say Scott finally did it. He was talking earlier on ca.com(or was it SSA) on Nick's new Mag thread. When Nick was "braggin"(not a bad thing nick ) about how shallow his new mags will be. and Scott came in and said he could make a BTL smaller(with more motor strength) than whats there now but his customers think bigger is better so he never pursued. But I guess he realized his customers arent dumb(my words not scott's) and prefer to save some space.


Everybody blame SI for this! : pointsfingers: just kidding, I think its better now that its smaller, bigger aint always better. I rather save space

[hoss]

single slug, taller surround, are the specs the same?

[Megalomaniac]

BL is increased iirc. he using a different slug than the previous ones, maybe Nick or Jacob can explain somehow...

[Electrodynamic]

Hrm, got a link to where Scott was referencing something I said?

Wider slug(s) = higher BL. It's a commonly known fact in speaker design. Just take a look at any PA mid or subwoofer - they have REALLY wide slugs. An 11" slug is BIG though.

[Megalomaniac]

I would if i could. it was on your old forum, and when i went to go look for the post, I dont see the old topics anymore are they porting them over here?

[hoss]

how does a wider slug increase Bl? is it purely from the increase in ferrite and the higher "B"? (yup, cant think of the word for what that B stands for, know what it means, just cant think of the words lol)

if thats the case, it seems like saying a wider slug increasing Bl would be along the same argument as a larger sub playing lower... not neccisarily true. i mean, it worked in this instance, just trying to understand... this is probably a conversation for when im not so drunk...

[Megalomaniac]

Originally Posted by hoss

how does a wider slug increase Bl? is it purely from the increase in ferrite and the higher "B"? (yup, cant think of the word for what that B stands for, know what it means, just cant think of the words lol)

if thats the case, it seems like saying a wider slug increasing Bl would be along the same argument as a larger sub playing lower... not neccisarily true. i mean, it worked in this instance, just trying to understand... this is probably a conversation for when im not so drunk...

lol

[GunForHire]

Originally Posted by hoss

how does a wider slug increase Bl? is it purely from the increase in ferrite and the higher "B"? (yup, cant think of the word for what that B stands for, know what it means, just cant think of the words lol)

if thats the case, it seems like saying a wider slug increasing Bl would be along the same argument as a larger sub playing lower... not neccisarily true. i mean, it worked in this instance, just trying to understand... this is probably a conversation for when im not so drunk...

All else being equal, more magnet surface area increases the total flux available in the system. Ideally, you want as much magnet as possible to be spread out; you'd want to take your magnet and make it as wide as possible, with the limits being the amount of thickness needed for the mechanical stroke and the coercive force required to drive through the rest of the circuit.

If I had 300 ounces of magnet, I'd make it as shallow and wide as possible.

This new Fi speaker is shallower, but only by about an inch, according to the pictures. It's still a LOT thicker than the MAG. And it has a very large and deep back plate (certainly bumped internally), which means a long magnetic path through the steel. While that is better than air, it is not as good as flowing through magnet, so it will be a bit lossier than it needs to be...

[Tirefryr]

YOu know, ah, fuck nevermind..

[1sashenka]

The cone looks like Exodus Audio Maelstrom. I have a feeling Dan Wiggins quietly designs all over the map. Seems like all the better subs out there have his signature appearance to them.