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In the Forum: Horn-Loaded Speakers
In the Thread: ... again on GOTO Unit drivers...
Post Subject: Now we are hitting the keys!Posted by Romy the Cat on: 8/18/2008
 twogoodears wrote: |
| …. they seem to operate in a very specialized narrow bandwidth... So, my (humble) advice - based on my direct experience - would be: if the case, try to use Goto as 4 ways, not the more common 3 ways... also if Tanaka-san is, for commercial reason I suspect, also advising and "blessing" for 2 and 3 ways systems... they simply doesn't work this way. |
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OK, this is already something that touches the base of one of my fundamental (theoretical) disagreements with GOTO. GOTO slices the range to their narrow bandwidth drivers. It looks like it shell appeal to people like me – those who use multi-channel horn installations with DSETs, however I do not like the reasoning why GOTO goes narrow bandwidth.
The clarification and revelation to the subject came to me a couple years back when I was experimenting with driving my S2 from electromagnet:
http://www.romythecat.com/LatestPosts.aspx?ThreadID=1929
What I was able to witness is that increasing of flux density leaded to unavoidable shrinking (toward to HF) the optimum operational bandwidth of driver. As I undusted GOTO uses very high flux (2.4T if I am not mistaken). That does a good advertising for the people who have no idea what the words means but I do not think it is “good for Sound”. GOTO, while they are doing for high flux end up with super stiff suspension. It is not bad itself but this stiffness is something that I call “nervous stiffness”, when the cone not hard suspended but rather arrested in space by magnetics paralyses. Sure you can’t not drive such a driver with a bandwidth that is outside of the “magnetics paralyses”, so here is where GOTO has a solution – they say: “use 4th order crossovers”. It goes along very well with GOTO disbelieve that “humans hear phases”… 50 years ago the deaf idiots who wrote books about loudspeakers and psychoacoustic use to state that humans hear no phases. Nowadays, no one make those statements anymore as they considered as scientific heresy identical to the comment that Earth is sitting atop of 4 elephants that stay on a shell of a giant turtle….
I have to admit that there are ways to deal with “nervous stiffness” of high flux divers but… there are no voices from GOTO about it, neither about the drivers design nor about drivers Sound. GOTO looks like comfortable with the situation that they sell 10 drivers per year to the Robb Report type of customers who get from it a questionable sound and there is not further attempt to advance the results. I do not think about it too hard as I do not use GOTO drivers but it does not prevent me from having a position on the subject.
Rgs, Romy the caTRerurn to Romy the Cat's Site