Well i checked the synergi patent Thomas has
404 Not Found
It's says expired at the bottom?
I'm just wondering what this means? since I've seen alot of people talk about how companies aren't allowed to do anything like that etc
404 Not Found
It's says expired at the bottom?
I'm just wondering what this means? since I've seen alot of people talk about how companies aren't allowed to do anything like that etc
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That is for the tapped horn
The synergy horn says
"2019-04-28 Anticipated expiration
Status Expired - Fee Related"
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Why are you asking? Are you planning to build and sell Synergy horns? Or wondering if the market will soon be flooded with them?
Yeah i wonderede if we could expect someone like klipsch to make some them, seeing that they have easy acces to the k402 horn.
But if someone were start making kits that would also be nice.
In general i just asked because in all the threads and dokuments i find, they always remind the reader of said patent.
Unity Patent (expired/abandonded):
US6411718B1 - Sound reproduction employing unity summation aperture loudspeakers
- Google Patents
Synergy Patent (still active till 2029):
US8284976B2 - Sound reproduction with improved performance characteristics
- Google Patents
Exactly what the difference is between them isn't easy to say.
US6411718B1 - Sound reproduction employing unity summation aperture loudspeakers
- Google Patents
Synergy Patent (still active till 2029):
US8284976B2 - Sound reproduction with improved performance characteristics
- Google Patents
Exactly what the difference is between them isn't easy to say.
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Hi bwaslo,
actually, the difference is very easy to understand by comparing the claims, not the specification.
Kindest regards,
M
actually, the difference is very easy to understand by comparing the claims, not the specification.
Kindest regards,
M
Synergy patent is more about the passive cross-over for the horn and one could make an active unity horn without violating any active Danley patents, AFAIK.
What? The Synergy patent doesn't even mention passive crossovers in any of the claims.
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The short answer is yes despite the new patent unless someone can explain otherwise. I think the bigger question is why other companies have not made their own synergy horns, although there is a general trend in the high end to reduce acoustic source spacing:
ULTRA-X20 | Meyer Sound
Product Detail - RCF
Anya - EAW: Eastern Acoustic Works
The crazy (and unrelated for the patent) thing I found is that Renkus Heinz had a synergy like (I say like as the thinking is quite different in that the mids are horn loaded rather than bandpass) years before Danely:
Renkus Heinz 1996 unity horn patent? US5526456A
Suggestions on theory behind Co-entrant horns?
The layered combiner used in the Jerico series is still patented.
ULTRA-X20 | Meyer Sound
Product Detail - RCF
Anya - EAW: Eastern Acoustic Works
The crazy (and unrelated for the patent) thing I found is that Renkus Heinz had a synergy like (I say like as the thinking is quite different in that the mids are horn loaded rather than bandpass) years before Danely:
Renkus Heinz 1996 unity horn patent? US5526456A
Suggestions on theory behind Co-entrant horns?
The layered combiner used in the Jerico series is still patented.
Saw this JBL thing the other day... mids at the horn apex, tapped woofers, HF horn hung at the mouth. Synergy-ish. Active crossovers I assume.
PD743i-215 | JBL Professional Loudspeakers
https://jblpro.com/en/site_elements...d700-series-co-axial-mid-high-speaker-systems
PD743i-215 | JBL Professional Loudspeakers
https://jblpro.com/en/site_elements...d700-series-co-axial-mid-high-speaker-systems
Interesting design and has band passed woofers so to me is a synergy horn. I can see some clear advantages to this arrangement in that your getting full horn loading of the mids which can be the weak point in maximizing overall output from the synergy horn.
The technote is full of details on how to design a speaker like this and the issues:
https://jblpro.com/en/site_elements...d700-series-co-axial-mid-high-speaker-systems
The technote is full of details on how to design a speaker like this and the issues:
https://jblpro.com/en/site_elements...d700-series-co-axial-mid-high-speaker-systems
Not my experience that the mids are the weak link. In all my designs the compression driver sets the sensitivity of the system at the top end of its passband. I have no attenuation there, but the mids are always heavily padded.
Yes sir, Just as TD has often said, the HF sets the limit on a point source's output.
when you take into account the typical power spectral density of music, the drivers power handling and the horn been undersized at the bottom of the mid-ranges frequency range though it can be. EG look at how many mid drivers the SH96 needs Danley Sound Labs Announces SH-96 Loudspeaker