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In the Forum: Audio For Dummies ™
In the Thread: Dannoy 2021 Loudspeakers
Post Subject: Here is VERY loaded post.Posted by Romy the Cat on: 11/22/2022
I know it's gonna be one of the thousands posts it's my
website but to make this post it took obscene amount of thinking. Not everybody
will understand as it is very counterintuitive but those few who follow my Dannoy
saga and Particular is those few who vent for this and experimented with Dannoy
themselves might find it interesting.
As I was trying to figure out what was so attractive in the
noise sound and one eye never was able to repeat it I understood that I understood
the Dannoy configuration as it was a normal loudspeaker but in reality it is
something different. remember, when I and you were trying to implement low
frequency filter to Red’s woofer? we were getting better bass as with sub low resonant
frequency of passive radiator the Reds woofer exceeded its own legitimate
excursion. do you remember that I it looks like anybody else were complaining
as we improve bass we are losing magic in a high frequency? I think I found an
explanation. In my current view the extreme high frequency attractiveness or
erratic driver derives not from some mystical quality of the driver, under
normal circumstances it does not sound properly. the “magic” begins to work
only if the Red woofer become to be overdriven as much as possible by low
frequency passive radiator. why the hell high frequency compression driver
inside of Red would be so much carrying about Red woofer? The answer might be
Doppler distortions. In reality the cone of Red woofer might be acting as continuation
of Twitter horn and as low frequency begin to stress the woofer then the
Tweeter begin experience variable horn profile exit. it is very possible that
this act as something that I was very attractive, I do not think this effect is
well known.
I am immediately putting this hypothesis to test in fact I
am building new Twitter now to take advantage of hypothesis above. this would
perfectly explain why I never was able to replicate the “magic” as anything I
did was to minimize excursion of red woofer. So, in ideal situation the woofer
should act as a Doppler exciter but do not particular radiate on sound. If that
presumption is correct, then it's opening an opportunity to design a completely
new topology of a tweeter with precise matching of diameter of the woofer to
the length of the waive Twitter will care. I would like to name this topology
the Dannoy Tweeter.
Now, let take it further… if we know HOW the LF Doppler + I variable
horn termination impact the HF sound then we can modulate the Red woofer moving
by … applying the active signal to the… passive radiator…. If we can make the
passive radiator… do not sound on it own? Can we in real time to modulate infra
sound on hypothetical Red’s woofer in order to inject custom harmonics into anything
over 5Khz? Rowuk claims that he cannot bring complexity to E6 like with F3 but
how about if we cire with his tramper inside a tuba and his trumpet length fluctuates
along with the tuba tone?
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