I had my acoustician made them for me Lagonda san. I wanted them to be part of the room decoration not an add on. Here is a side angle.
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I will keep doing what Mike did with his room. A bit here a bit there. I will experiment with his use of cloth on hard surface too. Expect to take a year or so. In the picture, behind the Studer I have a brown 3 meter tall absorber standing. I will eventually remove them (there is another one on opposite wall.) I experimented replacing with another diffuser, the sound did open up a bit more to the side.
The removal of absorbers made the room more lively and flood back my room with sonic info that was suck out. Using wood took the brittles off my highs. Cymbal crash, percussion instrument have better resolution, snap, as if you hear from tape vs vinyl.
However, the image, placement, the ease and effortlessness of sound actually are improved by realigning my horns. I was doing this with my tone arm guy first using pink noise playing left and right channel individually. This revealed that the noise beaming from the top and mid horn of my left and right speakers were one side higher one side lower. In other words I was hearing pink noise from left speaker directly beaming to my left ear but I had to stand up 7" to hear a direct pitch on my right ear. We then use laser beam to guide the horn position to my ears and adjusted them accordingly. I still need to fine tune the angle more because the damn horns are very heavy and I am short. I had to hold up my arms supporting each horn while my tone arm guy adjusting and locking up the angle from behind the horn. Too much for my back. We could have done it more precise if I used two more men and I was just sitting at my listening chair pointing finger what to do. I also toed out my right speaker to the same angle of left one. My room is L-shape. There is no equal wall on the right of my listening position. So Ralph my speaker designer toed in the right speaker to compensate when we initially made installation. Imo it sounds much better now and I just need to dial the volume knob of my right Lamm pre one notch higher. Simpler the better.
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You look at the above picture closely you will see a green laser beam going across from the right gold plated TAD tweeter to the left. The one on the left is positioned below the beam. So this means my left speaker is standing a little lower than my right speaker. I don't know if this has any consequence to the sound but I will find way to adjust later. The speaker weighs like a ton.
Anyway, it is an on going process and does not cost much. It only costed me $100 to hire a tone arm guy but the pay off is much more than changing a cartridge.
Tang