I found this picture on Pinterest about a design made/discussed here on this forum.
Can someone point me to the thread?
I'm very interested in the design.
Can someone point me to the thread?
I'm very interested in the design.
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make a search with "Google image search" , there are many hits to guide you
It is interesting and I checked out some reviews. This is an open baffle speaker with 2 huge drivers. The audiophile reviewers unsurprisingly highly praise the absence of any enclosure influence.
What I know from acoustics is that with speakers on a narrow baffle, no low frequencies can be produced because air moves from the front to the back of the speaker and not to the ears of the listener.
And if this would work, why are there millions of enclosure designs on this world all with the goal to produce a decent low-frequency response?
In all the reviews I notice a stunning absence of any frequency response. But obviously the sound is regarded as the best bass response ever.
Is this audiophile b/s or is there some truth in it?
What I know from acoustics is that with speakers on a narrow baffle, no low frequencies can be produced because air moves from the front to the back of the speaker and not to the ears of the listener.
And if this would work, why are there millions of enclosure designs on this world all with the goal to produce a decent low-frequency response?
In all the reviews I notice a stunning absence of any frequency response. But obviously the sound is regarded as the best bass response ever.
Is this audiophile b/s or is there some truth in it?
no eq will cause large rolloff down in freq, and different drivers on one width baffle should be avoided. more of an art piece than a proper dipole.
I found this measurements of the jamo 907-909
It's not a narrow baffle. It measure 50cm.
The double bass driver boost the lower end. It's crossed to the mids @250 Hz which is ideal for baffle step with a width of 50cm.
Nothing special for an open baffle design.
I was interested because I thought it was a DIY speaker and not open baffle.
I made Troels PMS speaker. I made the cabinet with tractrix curving. It was not easy to do.
From that point of view I thought this curved baffle would be easier to make.
Attachments
Eq isn't needed. It's a combination of baffle step and output of the 2 bass drivers. See the measurments I found in previous post. Nothing special many do this for open baffle.
