I found this new bandpass patent info.
United States Patent 7136498
It is combination of series & parallel tuned 6th order bandpass.
I think we can make one for ourselves.
Anybody have idea of designing this?
United States Patent 7136498
It is combination of series & parallel tuned 6th order bandpass.
I think we can make one for ourselves.
Anybody have idea of designing this?
I have an idea on this enclosure. I may build an experimental enclosure for an EHQS 12 or old RF 10" sub.
it will be better if u can share the info about design.
We can also then try to do experiment.
Waiting for ur results of ur experimental enclosure.
We can also then try to do experiment.
Waiting for ur results of ur experimental enclosure.
Well I have built some aperiodic bi-chamber enclosures before and this type might be similar in some ways.
Is it just me, or does it seem like the patent author is just trying to come up with a way to circumnavigate the Bose patent?
In other words, you can't sell a bandpass subwoofer with dual vents without paying Bose a royalty, so he came up with a design that uses three.
(AFAIK, Bose owns the patents on reflex boxes that look like this and this.)
In other words, you can't sell a bandpass subwoofer with dual vents without paying Bose a royalty, so he came up with a design that uses three.
(AFAIK, Bose owns the patents on reflex boxes that look like this and this.)

An externally hosted image should be here but it was not working when we last tested it.
Isn't the Bose patend expired or going to be expired very soon?
Bose patent already expired.
Is it just me, or does it seem like the patent author is just trying to come up with a way to circumnavigate the Bose patent?
In other words, you can't sell a bandpass subwoofer with dual vents without paying Bose a royalty, so he came up with a design that uses three.
(AFAIK, Bose owns the patents on reflex boxes that look like this and this.)
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An externally hosted image should be here but it was not working when we last tested it.
It seem the image lost, can you reupload again? Thanks
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