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08-04-2021 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,819
Joined on 05-28-2004

Post #: 1
Post ID: 26240
Reply to: 26240
Dannoy 2021 Loudspeakers



"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
08-04-2021 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,819
Joined on 05-28-2004

Post #: 2
Post ID: 26241
Reply to: 26240
Here it is.
The bottom woofer array is not connected at all.

Dannoy_2021.jpg



"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
08-05-2021 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,320
Joined on 10-12-2006

Post #: 3
Post ID: 26242
Reply to: 26240
Front to Back
Yes, the way you came up with the Dunnoy is FUNNY! But I will tell you now that I was thinking of the 10" Tannoy for the reverb channels, not because it "does everything well", but because it is acceptable in terms of scale, and it has tone, and it maintains coherence better than most vintage drivers that otherwise sound that good. Anyway, I have similar drivers in mind when I get to implementing the reverb.


Best regards,
Paul S
08-18-2021 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,819
Joined on 05-28-2004

Post #: 4
Post ID: 26280
Reply to: 26241
I have good feeling about this project.
My idea of Dunnoy loudspeaker took an interesting turn. I would like to capitalize upon what I discovered above an to vandalize my woofer towers, factoring Tanoy Red in it. So, it will ended up with Reds working in a half of wolfed towers with one of the woofer as passive radiator and another part of the speakers (acoustically divided and sealed) with two wolfer drivers loaded actually and lowpass at 40Hz. I have a lot of fun of doing kit as I do not follow any loudspeaker wisdom, whatever it might be but do it explicitly by intuition, listening and reacting. The first objective is to have cold-running speaker for SS amplifier that I might use as a pilot, to turn and keep my main system running is just too much logistics. It is not that I have objectives to downsize, absolutely not, just curious if I can get “there” with small form factor. The second objective is to use somehow woofer tours that I love so much and keep justified in my listening room. The third objective is to take advantage of 10” Tanoy Red driver that certainly have its own beauty. And the last objective is that I do have a lot of pleasure while I'm doing it.

It is very important to note, at least to me, that my Dunnoy experiment has strictly self-entertaining purpose, general interest in Audio and is not driven abandoning of my devotion to multi-channel horns and DSETs. Whatever I will be ending up will be very much secondary result. It just happened then I have some good tools lying around and I enjoy a process of audio creation. I will continue post the progress. I know exactly where I would like to end up and it will not be a “perfect” loudspeaker. If it goes successfully then it would be “fuller” range implementation off the best Tannoy Red can do this an attempt to suppress some Reds problems.  I have very good feeling about this project.


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
08-30-2021 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,819
Joined on 05-28-2004

Post #: 5
Post ID: 26297
Reply to: 26280
Another "here we go"
Did you wonder why I am looking like Mephistophilisin this video?
 


DunnoyTower.jpg



"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
08-30-2021 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,819
Joined on 05-28-2004

Post #: 6
Post ID: 26298
Reply to: 26297
The response
Dunnoy2021_RTA.png


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
08-31-2021 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,819
Joined on 05-28-2004

Post #: 7
Post ID: 26299
Reply to: 26298
Thoughts about above.
The above in Red color the response of Tannoy 10” Red LSU/SF3LZ driver with default crossover mounted in in Dunlavy TSW-IV Tower in a position of third driver and loaded to 4th 25W/8565-00 driver as passive radiator.
 
In blue, the response of the same Tannoy driver but complimented with another pair of the same paralleled 25W/8565-00 woofers from the same enclosure but acoustically isolated from Tannoy and actively driven by the same amp with no filter. This is right channels, which is pretty much at the middle of my room and has no wall gain. It looks like it is out of phase if you ask me…but the reversed phase not better. There were zero efforts spent there, this is just a first blind connection. Still, the entire assembly sounds remarkably pleasurable.
 
I was trying to drive Tannoy with Milg and woofers with my SS amp, effectively bi-amping with   second order crossover at 35Hz. It was VERY nice. Then I took it further and put the LF section on transition slop, crossing it at 15Hz and gain 10dB, it gave me more or less pure 20Hz but the drivers were strenuous for the room of my size and I felt some LF compression.
 
Now, where to take it? Not quite sure yet. I do not want to drive it with Milq and I would like it to be cold-running, all time on segment of my installation. To bi-amping is a good idea but a paralleled woofers have near enough sensitivity to work along with Tannoys. If not, I can throw another 2 woofers to help that would give a nice array of 4 woofers per channel to support the Tannoy.
 
I do not mind driving it with one amp, but I would need to have a good SS amp. I do not want to use older Lamm M1, too big, too hot, and too bulky. Something like reported Lavardin would do if they have one input and no volume control, but I would probably need 100W…  
A very interesting configuration. I am still getting familiar with it sound as the Tannoy DC drivers are different animals. One way or another so far the Dunnoy is in  a way ridiculous but a very successful project.



"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
09-13-2021 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,819
Joined on 05-28-2004

Post #: 8
Post ID: 26310
Reply to: 26299
It is more then sex change operation!
I took very seriously my recent dive into Dunnoy. There is something in there that gives me even more then multichannel milliamp horn installation. Nope it is not better sound it is different sound and different relationship with sound. It is something that I hardly even seen in audio. It is like the person who you love whispering in your ears, not even whispering but juts breathing. It is very new and very interesting for me to investigate and to have control over.
 
So, I have initiated a project to build a completed my own box loudspeaker, incorporating into it all that I learned from what Dunnoy. It will be not a “new design” but a new approach, fully based on audio rendering of my feelings. I think it will be VERY interesting loudspeaker and I assure that there is no ego in there at all. To demonstrate to myself how serious I am I took away Macondo and Milq from my listening room.  I am prototyping and testing now different configurations models, amplification and ideas and I have good prediction of extremely stimulating result.
 
As anything I does it will not end up with a commercial product and will be fully disclosed at my site. Having a tradition to call my audio projects by García Márquez’s characters I would like to name my new loudspeaker “Remedios the Beauty” or RB for short. It kind of coincide with my own initials (Roman Bessnow), OK, ego is playing in it a little. One way or other I am very excited about my new Remedios.


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
09-14-2021 Post does not mapped to Knowledge Tree
Newtohorn
Posts 10
Joined on 01-03-2018

Post #: 9
Post ID: 26311
Reply to: 26310
Teaser?
Watched youtube feeds and found my way back here.  Interested to hear more about your priorities in the new build.  Given the project is inspired by Dunlavy, I presume the build will be time aligned with first order crossover?  If so, are you intending to overcome the main requirement of such design - the need for high power ss amplification?  Signed up...
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