Tc Sounds To The Rescue!

I certainly am trying to go!

I have a few people who might split a room with me.
See if we can get invited to a few parties... Kicker seemed to take over the Hard Rock, at SEMA this year... I imagine there's more of that at CES...

...particularly since the "adult" industry has it's annual convention at the same time... might make for more interesting parties, at any rate...

Seth... need an excuse to get away from the kids? :ss:

 

Old news.

It'll be out at CES.

 

Hmmmm, adult industry convention, free alcohol, legal gambleing, legal hookers, audio gear, my family left behind, Marshall, and Chris in the same town?!?!?!?! I'd wind up dead in a ditch somewhere!!!

Lemme think about it Chris, that might be a blast!!! I'll give you a call this weekend.

 

The threshhold would depend on each speaker, what other contributing factors there are, and exactly how parabolic the BL curve was... even what suspension was on the driver.

If it helps any, I've heard numbers like 80% of all perceived driver distortions are due to IMD caused by this effect, and inductance (Oh, I didn't mention inductance did I.. )

 

not actually...especially when we have threads like this one

 

not actually...especially when we have threads like this one [/b][/quote]
Do you have info that we don't? share!!!

 

Do you have info that we don't? share!!!
[/b][/quote]
i would love too...but alas...it's not my company...so i am not at liberty to discuss it

but it should make for some very interesting discussions in the future

 

If it's their new "flat BL" motor, then it already HAS made some interesting discussion. Here's the link.

Or if it's their new midbass, then that has already been discussed as well. I will assure you that we won't see a DUMAX report of it to back up the claimed excursion. [/b][/quote]
what the 14 mm xmax one that is supposed to be in the eD comp set???

and as far as the flat BL motor...are there doubts about it's performance or is there just a lot of hate since it's not xbl^2??? shouldn't we at least give it a chance and let it come out and experience it ourselves before we jump to conclusions?

 

from my understanding....that is not the TC sounds motor i am talking about

this is nothing i picked up on the forums

it's not the midbass driver

it will be the motor topology used with the new line of Ed drivers

now i shall shut-up for the next 6 months

 

The threshhold would depend on each speaker, what other contributing factors there are, and exactly how parabolic the BL curve was... even what suspension was on the driver.

If it helps any, I've heard numbers like 80% of all perceived driver distortions are due to IMD caused by this effect, and inductance (Oh, I didn't mention inductance did I.. ) [/b][/quote]
*sighs*

Basically, any of todays high excursion (say, 20+ mm, one way xmax), low distortion super subs. That encompasses quite a few drivers, but not so much as to not have a general opinion/answer as to the output level at which the average person will hear distortion when listening to music.


You guys are expensive people to know I guess I'll have to buy a friggin' xbl motored subwoofah to test it out myself. Brahma/XXX/BEA...

:ss:

 

Luv, where are you located? I got customers and friends with brahmas all over the place. Maybe I can get you hooked up with somebody who has one. I have actually done that once or twice before. It is awful hard to muster up $400 just to try something out. B)

 

No one said it was good or bad...
No one said it was Eclipse or Ed...
No one said it on a train...
No one said it on a plane...
No one said it with a mouse...
Everyone is quiet, in this house.

Wait for CES, if you want to see...
This thing, of rumors, and discussions, shall be.

:bag:

 

delvryboy, sure it isn't what Ben talked about it over at SIN?

 

Uhm, guys...I'm not sure what I thought that I saw...but whatever it was, it's not there. For some reason I thought that I had run across dismissal of the new TC Sounds design, but if I did, it wasn't on this thread (maybe it was on the SIN link that I currently had open as well). Sorry to cause confusion.

 

I don't doubt it exists, but I doubt it will be a useful motor... A few things:

1. Consider the BL they measure. Using some ratios from the cutaway drawing they show, the voice coil is around 3.5" long. With that length (on the sample shown) the BL is pretty low, wouldn't you say?

2. Moving mass. Really long voice coils are really heavy, unless you go to aluminum. Of course, then your Re goes up quite a bit as compared to copper, meaning a thicker wire is needed. Which reduces the number of turns, and hence lowers BL even more. And when you add a lot of moving mass, Qes skyrockets.

3. Inductance. Really long voice coils also have really high inductances. Inductance goes as the square of the number of turns. Double the length, double the turns, quadruple the inductance. Drivers in the 2.3-2.5" long voice coil range already typically have inductive humps in the 50-60 Hz range; making it even longer would shift that inductive hump down quite a bit. Unless of course you use a lot of copper in the motor and in the gap. But that widens the gap even further, meaning even lower BL...

4. Clearance. The longer the voice coil, the greater the clearance in the motor because a given angular offset results in more radial displacement. You need to make the gap wider to account for potential rubbing issues, OR you use a stiffer suspension. Of course that - once again - raises the Qes/Qts of the driver.

This type of approach was discussed in our own patent application, but for the reasons outlined above we don't use it. It can work, but in reality a multiple gap approach is much simpler, better performing, and more flexible. And if you want to see a LOT of throw, CES 2004 will be the place to be...

Dan Wiggins
Adire Audio

 

question...i have read the white pagges on XBL^2....when i read into that term...i automatically think dual gap technology

i believe XBL^2 has perfected that motor technology

from my understanding ...the new motor will be a form of dual-gap...of course....it may be misinformation givin to me

if this info is correct....then i do not see the TC motor talked about above being the same motor i am talking about