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Read the Post in new Window Read the Post in Threaded view  Post #7: Some progress since the last time by ulf on 2023-01-13 
Browse the content of the threads in new Window  Thread: The concrete midbass horns: The story continues in Horn-Loaded Speakers  6 Replies 
Since I last posted there has been some progress to my indoor and my outdoor systems. Indoors I have added a pair of tapped subs. I must say that I am quite happy with these. Of course they are not as good as full size front loaded horns but still a ...

Read the Post in new Window Read the Post in Threaded view  Post #6: Some comments to the comments by ulf on 2015-01-02 
Browse the content of the threads in new Window  Thread: The concrete midbass horns: The story continues in Horn-Loaded Speakers  6 Replies 
Hi Romy, Sunfire? No! Who would add a Sunfire to this system? The black box in the pictures a power amplifier for the midbass horn. A second MF could be interesting. I will see if we can do some test set up of this. Per has the space for it...

Read the Post in new Window Read the Post in Threaded view  Post #5: L.Cao by ulf on 2015-01-02 
Browse the content of the threads in new Window  Thread: The concrete midbass horns: The story continues in Horn-Loaded Speakers  6 Replies 
Hi Paul, The L.Cao are quite nice fullrange drivers at a reasonable price. Compared to Lowther EX the L.Cao lacks some dynamics but have a better tone and are more homogeneous. I am no fan of whizzer cones. To use it as a midrang...

Read the Post in new Window Read the Post in Threaded view  Post #1: The concrete midbass horns: The story continues by ulf on 2015-01-01 
Browse the content of the threads in new Window  Thread: The concrete midbass horns: The story continues in Horn-Loaded Speakers  6 Replies 
Some of you have already seen my old posts about the 2 pair of concrete midbass horn a friend and I built a few years ago.   Now I just wanted to share what has happened to those beauties since the last po...

Read the Post in new Window Read the Post in Threaded view  Post #1: Some nice horns from Greece! by ulf on 2008-02-22 
Browse the content of the threads in new Window  Thread: Some nice horns from Greece! in Horn-Loaded Speakers  1 Replies 
A friend in Greece started a company manufacturing and selling nice horns.He makes a serious attempt to use the best materials and highest quality finishing. Take a look!http://www.sonusaeterna.com/speakers.htmlBest Regards: Ulf...

Read the Post in new Window Read the Post in Threaded view  Post #18: Midbass followup II by ulf on 2007-09-30 
Browse the content of the threads in new Window  Thread: Phase plug for midbass in Horn-Loaded Speakers  23 Replies 
Dear Malinowski,The basic idea for phase plugs is that the sound from all points of the diaphragm should  arrive to the throat at the same time. For the midbass horn we only used a simple one slit plug. If you feel up to it you could make a more...

Read the Post in new Window Read the Post in Threaded view  Post #16: Midbass followup by ulf on 2007-09-29 
Browse the content of the threads in new Window  Thread: Phase plug for midbass in Horn-Loaded Speakers  23 Replies 
Dear Malinowski,   Here are the input data used in the HornResp simulation for the tractrix midbass.This is a 117cm long tractrix horn with the TD-1201. Throat area 84 cm2, mouth 10000cm2 with 5,6 liters back cavity.Ang: 1Pi; FTA 89,80; S1 84;...

Read the Post in new Window Read the Post in Threaded view  Post #11: Re: A phase plug under 500Hz – my mania of disagreement by ulf on 2006-11-12 
Browse the content of the threads in new Window  Thread: Phase plug for midbass in Horn-Loaded Speakers  23 Replies 
Dear Romy,OK, some more about the midbass.Well, it was not really a surprise to us that the horn without the phase plug was dissapointing. Without the plug we had a horn that was a bit too short, had too large front cavity and less compression than w...

Read the Post in new Window Read the Post in Threaded view  Post #8: Midbass with plug: History by ulf on 2006-11-11 
Browse the content of the threads in new Window  Thread: Phase plug for midbass in Horn-Loaded Speakers  23 Replies 
Let me tell you a bit about how an why we designed the midbass horns the way we did.A few years ago we discovered the tractrix horn for MF use. It was really the most important improvement so far. No more honking exponential horn sound.The improvemen...

Read the Post in new Window Read the Post in Threaded view  Post #5: Radiation pattern, midbass? by ulf on 2006-11-10 
Browse the content of the threads in new Window  Thread: Phase plug for midbass in Horn-Loaded Speakers  23 Replies 
Here is an image depicting the radiation pattern of the HF for a midbass with and without phase plug. The dotted line represents the HF output. This is not a measured response!Here are a couple of pictures that may be amuzing. My girlfriend and the s...

Read the Post in new Window Read the Post in Threaded view  Post #3: Re: Phase plug for midbass - if you need it. by ulf on 2006-11-09 
Browse the content of the threads in new Window  Thread: Phase plug for midbass in Horn-Loaded Speakers  23 Replies 
Dear Romy, well the horns are actually not designed for HF. The intended working range is up to 5-700. But since we use low Q, only second order filters we want to have a rather large overlap in the crossover region and a fairly even pattern over ...

Read the Post in new Window Read the Post in Threaded view  Post #1: Phase plug for midbass by ulf on 2006-11-08 
Browse the content of the threads in new Window  Thread: Phase plug for midbass in Horn-Loaded Speakers  23 Replies 
One advantage of the use of a phase plug in a midbass horn is that it will beam less at higher frequenzies than a horn without phase plug. If the phase plug is designed for the specific horn and driver it will help "steer" the HF. Me and a friend ...
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