Unusual Speaker Designs

[paddycrow]

RDacoustic - "Evolution" + "Euphoria" speakers, for some more info, see #113

I wouldn't mind having that diffuser on the back wall.

Although, it looks like it would be a PITA to keep free of dust.

 

[pavuol]

sonihouse (japan):

"scenery" - dodecahedron omnidirectional speaker

"sight"

"vision"

 

[FrantzM]

Far Far Away?
S.

As befit the galaxy-wide soundstage and dark backgrounds, this (per force, very expensive) contraption would throw , in the mind of its owners,

 

[pozz]

sonihouse (japan):

"scenery" - dodecahedron omnidirectional speaker

Reminds me of the B&K omni speaker meant for measurement: https://www.bksv.com/en/products/transducers/acoustic/sound-sources/omni-power-light-4292

 

[pavuol]

yup, the idea surely isn't new

NTi Audio - DS3 Dodecahedron Speaker

 

[pavuol]

But it sure sounds looks crazy in "standard stereo setup"

 

[pozz]

But it sure sounds looks crazy in "standard stereo setup"

Comb filtering galore.

 

[pozz]

yup, the idea surely isn't new

NTi Audio - DS3 Dodecahedron Speaker

I've been eyeing NTi's SPL meter for a little bit: https://www.nti-audio.com/en/products/xl2-sound-level-meter

Can't quite justify the cost.

 

[Kal Rubinson]

I'm new to speakers, does "isobaric bass port" speakers count for this thread, or is it adopted by more manufacurers?
Wilson Benesch - Endeavour / Discovery II

There are other "isobaric" designs, e.g., Linn, but the others mount both drivers inside and facing out. I cannot think of a valid justification for this arrangement which exposes the driver to possible damage.

 

[Kal Rubinson]

How about this for old times sake:

 

[andreasmaaan]

There are other "isobaric" designs, e.g., Linn, but the others mount both drivers inside and facing out. I cannot think of a valid justification for this arrangement which exposes the driver to possible damage.

Theoretically, the less air between the diaphragms the better. And motor force and suspension asymmetries may be balanced out to some extent as a result of each diaphragm being in opposite motion to the other relative to its motor/suspension system.

Not sure how effective this would be in practice, but can see why, all else equal, such an arrangement would be optimal, in theory.

 

[pozz]

How about this for old times sake:
View attachment 90651

That's cool, but I've not seen it before.

 

[pavuol]

If you find forementioned ESD Acoustics - "Dragon" too bulky, I found a speaker from another company incorporating horns in design.

It goes kind of "inverted color design scheme" to that of Dragons

Seawave acoustics - Plotinus

 

[Kal Rubinson]

That's cool, but I've not seen it before.

You may note (from the filename) that the man in the picture is the esteemed conductor Hermann Scherchen who designed the speaker. There is a nice description of the design here: http://microphonesandloudspeakers.com/2017/03/10/active-loudspeaker-hermann-scherchen/

 

[Vladimir Filevski]

Isobarik, meaning constant pressure. The two bass drivers move in phase, such that the pressure inside the box doesn't change.
https://en.wikipedia.org/wiki/Isobaric_loudspeaker
Invented by Harry Olsen in the 1950s so nothing new under the sun.
S.

Actually, pressure inside the box does change, but the pressure of the air enclosed between the two woofers membranes does not change. And yes, it is an old invention by genius Harry Olson. It cuts required box volume in half and lowers the second harmonic distortion.

There are other "isobaric" designs, e.g., Linn, but the others mount both drivers inside and facing out. I cannot think of a valid justification for this arrangement which exposes the driver to possible damage.

Well, exposed back speaker frame is more sturdy than exposed fragile membrane facing out of the box. But ugly at worst... and "industrial look" at best.

 

[sergeauckland]

Actually, pressure inside the box does change, but the pressure between the two woofers membranes does not change. And yes, it is an old invention by genius Harry Olson. It cuts required box volume in half and lowers the second harmonic distortion.

Well, exposed back speaker frame is more sturdy than exposed fragile membrane facing out of the box. But ugly at worst... and "industrial look" at best.

Thanks for the correction. I meant the pressure in the box that's between the two woofers, not the box behind the first one which clearly has pressure changes. Should have been more specific as to which box!

S.

 

[Killingbeans]

It goes kind of "inverted color design scheme" to that of Dragons

 

[pavuol]

To everyone: please do not suggest another associations, my imagination is already enough:

Acapella - Campanile

 

[pavuol]

ok, that was too ordinary, let's something more extravagant, shall we?

Triolon Excalibur

 

[Ilkless]

Those look like the truly awful Lowther full range horrors or clones thereof.

Could also be Voxativ: the new whizzer darling. Posh German Lowther. Still dreadfully tizzy.