Manger Audio Loudspeakers. Has anyone listened to these?


I am particularly fond of full range loudspeakers. I am not terrifically fond of whizzer cone designs because to make them work you have to decouple the main cone from the voice coil at high frequencies, a mechanical crossover.
As I understand it, the Manger driver is a flat Walsh driver. It will cover 120 Hz to 40 kHz! This will just make it down to subwoofer territory. Other full range drivers include Cube Audio and Fostex both of standard construction and both decouple the voice coil from the main cone at higher frequencies. Is this really all that bad or can it be done maintaining high fidelity? I have not heard any of them. Both the Manger and Cube drivers are very expensive, in and around $5000 for a pair. So, I can not afford to experiment. The Fostex is cheap in comparison but it looks well made and specs fine.
I plan on making a pair of open baffle "full range" speakers crossing to subs in and around 100 Hz. Which driver to use?
128x128mijostyn

Showing 4 responses by asvjerry

Good evening... More accurately, a Manger (and Walsh drivers) are 'bending wave transducers' that create a 'ripple' in their surface element, as opposed to pistonic motion of the voice coil on a cone.

In a Manger, this is a flat 'plate' membrane; in a Walsh, a cone typically  inverted & stretched in its' vertical axis.

The Walsh-style driver is used in Ohm speakers, which are omnis in nature.  The Mangers' are used more like a typical driver, mounted on the face of a cabinet.

You might look this over:
https://www.tectonicaudiolabs.com/

Both share the physics behind DML (Distributed Mode) Loudspeakers;  'flat membrane' speakers, which range from the 'poster speakers' (which look like a picture/painting of some size, hung on the wall) to hall arrays; the best of which I've found are:
https://www.tectonicaudiolabs.com/product/pl-12-distributed-mode-loudspeaker/?id=product-805

I find this variant appealing in that two DML panels flank a AMT ribbon driver, very similar to my large ESS Heils...*S*

For one with a reeallly large listening space, one could go extreme:
https://www.tectonicaudiolabs.com/wp-content/uploads/2018/11/NEWPL12-HDR-10-SPKR-LINE-ARRAY.png

Better Walsh radiators can be found @ German-Physiks.com, but be prepared for the prices...

http://www.hhr-exoticspeakers.com  ...not only offers new versions of the 'original' Ohm speakers, but offers a 'stand-alone' Walsh radiator very similar to the G-P drivers....

...and quite like the drivers I DIY for my own amusement. ;)

Enjoy your music the way you do, J
Agreed, DMLs' are not efficient....noting that Techtonics' PL-12 panels can coast @ 350 RMS whereas the ribbon is one-sixth of that.
DML's are noted for the wide dispersion, and a 'horn loaded' ribbon would mate well with that.
A Tech rep @ NAMM '16 ( https://www.youtube.com/watch?v=2w91Vfp8bp0 ) claims 'no room interaction', but I'll assume he's referring to a 'large room', if not a hall. *L*
They're certainly not like any 'Maggie' one might compare them to....;)

An early reference to Mangers' details a 'back to back' arrangement;  my 'seat of the pant's' observation would indicate that the large magnet's would defeat any useful dipole radiation....mho, for what it's worth...

(That, and a dollar might get one a cross-town bus tix....*G*)

'16x30'....Is that 'w x d', or the reverse?  I've typically lived in the 'd x w' situation, which certainly effects my experience of things audio...that, and 'age-related high end roll-off' which is basically inevitable. ;)
@axpert   BINGO! "The Ghastly Truth". +10  Thank You. *S*

@mijostyn... "...Then they started farting all over the place."

Yeah, I hate that....the 'acoustic stink' just drives one out of the room....;)

Same with what I play with....the 'original Ohm/Walsh variants, victims of the 'tech' of the time., 'Great@200/AWOL@201 watts'.

If one directs the lowF to a sub...better, an array, more so.....
If one unleashes the main cone from that chore.....;)

It gets better...but I have no short stories, anymore. ;)

HO, the Manger competes with German Physiks as to high accuracy reproduction in two different approaches as to 'how' being one prefers to have music (or anything else) reproduced feels...'appropriate'. *S*

The Mang' don't get 'exposed enough'

But I'm an 'omniperv', and Proud of it. *G*;)
*L*  Well, I reserve the right to temper my 'changes'. ;)
But we could have some sort of good time. *G*

Distributed subs reminds me of one touting the DEBRA sub array with 5 units. Not huge drivers. either....curious enough to try.

I've literally done a Walsh 'surround' array with a single sub; it displayed interesting 'characteristics' that I'm compelled to explore.
Even if it's only for personal grins and enjoyment.

I'd bet I could get your attention as well....en guarde! *L*

No fat corner posts for me, no.  Shafts, minimalist.
Better hf by lowering the entire unit...almost too simple.
Better hf #2 is going 2way, a Walsh tweet with Walsh mf drivers.

I have a small pair I use as my main 'puters' monitors, with a small sub under desk....

Haven't blown them up yet. but there's no reason I should either....*G*