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Old 05-13-2015, 11:50 PM
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Default Interesting EMF Audio article about gauss

Technically Speaking: Gauss may not be what you think it is.

Regardless of the company and owner, I think this article is really interesting.

Can anybody confirm the facts?

When is there too much gauss, and how is that bad?

Posted on ca.com, but didn't get too much help. Was advised to post it here as well

Trying to gain as much subwoofer motor design knowledge as I can. Not a noob, but I appreciate all information if there is anything else you would like to add.

Thanks!
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Old 05-14-2015, 12:26 AM
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Now hopefully Jake or any other knowledgeable guys see this.
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Old 05-14-2015, 12:49 AM
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Did make for an interesting read, I don't really seen gauss thrown around very often though. Usually see BL like talking about motors like the solo x etc.
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Old 05-14-2015, 03:59 AM
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I wouldn't read into what emf says for the most part. At work so can't tell you why his article is flawed. I'm sure Jeff will comment though. Just hang tight.
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Old 05-14-2015, 04:56 AM
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Quote:
Originally Posted by SINTORMAN View Post
I wouldn't read into what emf says for the most part. At work so can't tell you why his article is flawed. I'm sure Jeff will comment though. Just hang tight.

Which Jeff??
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Old 05-14-2015, 05:49 AM
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Gauss when referring to the measurment taken by a guass meter such as the one he has in the photos is the measurment of the magnetic loop strength on that magnetic assembly. It must be taken in the correct place in the gap also to prevent bias reading. Center height/center width.

The hard Gauss (I'd call it that as it's motor loop only) being higher will mean something in the equation for motor strength since BL is two variables multiplied.

In his paper he's also trying to say that people "think" that heavier and larger motors equal stronger assemblies which is not correct obviously. A stock speaker like he measured for instances has a tiny gap thus the magnetic loop was very strong. If the gap was really wide then the Gauss would fall.

In a nut shell he's associating "bigger equals stronger" and " stronger equals better" which isn't what some motor people have actually said
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Old 05-14-2015, 07:41 AM
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There has been alot of activity recently on Facebook groups (and some foreign forums that I watch) where people actually DIRECTLY associate the raw Gauss figure with a better speaker, period, and removing all other considerations. This is even going a step farther into irrelevancy beyond people salivating over raw BL figures (without referencing RE) -- or even simply BL^2/RE figures -- to figure out what speaker is "better." (**)

I believe that is what Sean is pushing back against -- specifically.

It's pretty easy to make a driver have higher Gauss while also making it have less BL. It's also easy to "over motor" a driver so that it isn't very flexible in terms of what enclosures it will work in.

Regardless of whether one agrees with the format or methodology of the article I think we can all agree that making a motor "stronger" by any definition doesn't make a speaker better, period, in all applications

** -- Even for raw SPL... the speakers we have in our Terra have a BL^/RE of around 120 and we are doing 170s with them. We put 4-layer coils in the Z v.3 motor (which has a gap designed for 8-layers). I dropped a big Neo driver in there with a BL^2/RE of 500+ and a raw Gauss figure over 60% higher and lost SPL.

The bottom line is -- there is WAY more to speakers than Gauss, BL, BL^2/RE, etc. And I, and probably everyone else in this business, simply see too much focus exclusively on these figures.
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Old 05-14-2015, 09:22 AM
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Thank you for the replies everyone!

If you have any other informative article links about motors, please share!
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Old 05-14-2015, 04:10 PM
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Quote:
Originally Posted by sundownz View Post
There has been alot of activity recently on Facebook groups (and some foreign forums that I watch) where people actually DIRECTLY associate the raw Gauss figure with a better speaker, period, and removing all other considerations. This is even going a step farther into irrelevancy beyond people salivating over raw BL figures (without referencing RE) -- or even simply BL^2/RE figures -- to figure out what speaker is "better." (**)

I believe that is what Sean is pushing back against -- specifically.

It's pretty easy to make a driver have higher Gauss while also making it have less BL. It's also easy to "over motor" a driver so that it isn't very flexible in terms of what enclosures it will work in.

Regardless of whether one agrees with the format or methodology of the article I think we can all agree that making a motor "stronger" by any definition doesn't make a speaker better, period, in all applications

** -- Even for raw SPL... the speakers we have in our Terra have a BL^/RE of around 120 and we are doing 170s with them. We put 4-layer coils in the Z v.3 motor (which has a gap designed for 8-layers). I dropped a big Neo driver in there with a BL^2/RE of 500+ and a raw Gauss figure over 60% higher and lost SPL.

The bottom line is -- there is WAY more to speakers than Gauss, BL, BL^2/RE, etc. And I, and probably everyone else in this business, simply see too much focus exclusively on these figures.
any comparative data between impedance curves? any comparisons between power compression
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Old 05-14-2015, 04:26 PM
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When would there be too much gauss?
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