Unusual Speaker Designs

[Urubamba]

Why not take the best of both worlds?
I went back to using tubes (the amp is robust, yes, but not very powerful, 38 Watts/channel in PP UL pentode, 32 Watts in triode mode) after a long pilgrimage. Coupled with high-efficiency speakers, I have the sound I was looking for, mainly in the mid/high zone. And the very low zone (sub), where a lot of power is needed, is fed with an SS with DSP. Of all the functions, I only use the crossover function, finally I settled on Buthewort 18/Db/Oct and boost or attenuate the gain according to the needs of the source to be played.
Not "it's all part of the same thing", surely from the sound, but not from the analysis of it, which is made up of many variables, the ones you yourself have named.
Long story, but the resolution is not that difficult. To each his own, if it makes him happy.

 

[as-audio]

Gents,
first post here, please excuse me. I refer to no. 448 in this thread (page 23, direct link does not work).
Re Eckmiller speaker : "This driver was intended to be driven with current source amplifiers, not your usual voltage source" -
where did master Magnum Innominandum learn this and how can it be confirmed ? It seems I can not send him a message.
Thank you.

 

[notsodeadlizard]

Cornu Compact Spiral Horn
The original German manufacturer is lost somewhere

6moons audioreviews: Cornu Compact Spiral

4 horns in a slim enclosure:

Ever think of building a Cornu Spiral horn? Now you can!

I did. For years in fact, but put it off thinking there was no way my skill level was up to the task. That is, until our good friend xrk971 opened the door to something that is easy for the layman and very rewarding. See this thread...

www.diyaudio.com

 

[fpitas]

Gents,
first post here, please excuse me. I refer to no. 448 in this thread (page 23, direct link does not work).
Re Eckmiller speaker : "This driver was intended to be driven with current source amplifiers, not your usual voltage source" -
where did master Magnum Innominandum learn this and how can it be confirmed ? It seems I can not send him a message.
Thank you.

Out of curiosity...do you plan to drive them from a pentode amp, like he mentioned?

 

[Killingbeans]

@as-audio Pro tip: If you mark a piece of text in a post, you get a little pop-up that says 'reply'. Click it, and it makes a quote for you.

 

[computer-audiophile]

Cornu Compact Spiral Horn
The original German manufacturer is lost somewhere

6moons audioreviews: Cornu Compact Spiral

4 horns in a slim enclosure:

Ever think of building a Cornu Spiral horn? Now you can!

I did. For years in fact, but put it off thinking there was no way my skill level was up to the task. That is, until our good friend xrk971 opened the door to something that is easy for the layman and very rewarding. See this thread...

www.diyaudio.com

I had such. They made a fat bass. I knew the developer Daniel Ciesinger well and worked with him a little. He stopped production because at that time the European laws changed very unfavorably for small manufactures. (WEEE, ROHS, ...)

I generally don't like backloaded horns. These are an exception.

 

[notsodeadlizard]

View attachment 290436

View attachment 290437

I had such. They made a fat bass. I knew the developer Daniel Ciesinger well, worked with him a little. He stopped production because at that time the European laws changed very unfavorably for small manufactures. (WEEE, ROHS, ...)

I kinda envy you.
This is a striking construction based on a bright idea.
It rarely happens that such ideas are brought to commercialization, sorry.

 

[as-audio]

Out of curiosity...do you plan to drive them from a pentode amp, like he mentioned?

Well, you will not find spks like these anywhere, but the technology is interesting.

 

[as-audio]

@as-audio Pro tip: If you mark a piece of text in a post, you get a little pop-up that says 'reply'. Click it, and it makes a quote for you.

Thank you, I was in a hurry.

 

[fpitas]

Well, you will not find spks like these anywhere, but the technology is interesting.

Yes, although high output impedance amps these days are rare.

 

[computer-audiophile]

Having experienced the Eckmillers at the RFZ in Berlin, together with the O18 there and in many studio's in east germany, and having owned the Isophon Orchester 2000 later after the fall of the wall and also experienced and owned...

Just stumbled across this. A DIY-colleague once had working Eckmiller speakers brougt to the European Triode Festival. I was able to listen to them and also try my own EL8 SE pentode amp prototype with them. That was a sensation in that these speakers are really rare collector's items today. The construction with the different damping materials is so complicated in the fine tuning that I have my doubts that you can still hear them today in the original quality.

BTW: Isophon Orchester Speakers I also had once, but the old ones with a simple cone tweeter. Sonically not a revelation.

Own photo for illustration:

 

[SIY]

Just stumbled across this. A colleague once had working Eckmiller speakers brougt to the European Triode Festival.

Was that Alex?

 

[computer-audiophile]

Was that Alex?

Yes

 

[Curvature]

The web is bereft of photos of the Precedent MZ Mod 3. A pity- not only was it unusual looking in the extreme, it also anticipated a bunch of trends in speaker design. Separate modules for woofer, midrange, and tweeter, all alignable in space, transmission line midrange, anti-diffraction treatments- all in the mid 1970s.

No luck on photos of these?

 

[Curvature]

The web is bereft of photos of the Precedent MZ Mod 3. A pity- not only was it unusual looking in the extreme, it also anticipated a bunch of trends in speaker design. Separate modules for woofer, midrange, and tweeter, all alignable in space, transmission line midrange, anti-diffraction treatments- all in the mid 1970s.

Just found them. Wow. https://softwaredotfree.altervista....ing_wp_cron=1685993583.7750699520111083984375

Stereophile Vol. 4, No. 2

https://worldradiohistory.com/hd2/IDX-Audio/Archive-Stereo-Review-IDX/IDX/80s/Stereo-Directory-1980-OCR-Page-0237.pdf

Funny thing is that I searched 6 months ago and found no results.

Edit: Added a link and some details.

 

[SIY]

Just found them. Wow. https://softwaredotfree.altervista....ing_wp_cron=1685993583.7750699520111083984375

View attachment 290451

Funny thing is that I searched 6 months ago and found no results.

Well done! I absolutely couldn't find them.

 

[computer-audiophile]

Meikyoku Kissa, Tokyo

 

[computer-audiophile]

The picture I have copied from Holger Barskes blog. The speaker is from Oswalds Mill Audio.

 

[egellings]

The picture I have copied from Holger Barskes blog. The speaker is from Oswalds Mill Audio.

Blatt! Those horns!

 

[Martin]

I saw and heard Endow Audio T35 point-array speakers at the Florida Audio Expo several years ago. They did not sound bad but they were an odd duck.

Their current lineup is even stranger.

Martin