Thanks for the input. I did try various positions in this room, and the ear-piercing treble is still there. The room is really average; there is nothing unusual about it. The odd shape should rather break any echo than create problems.
I come to ask myself whether this could possibly be a physiological problem / abnormality with my ears. Indeed, I do have quite an odd spectrum: I can clearly hear ultrasounds, i.e. dog whistles, which no one else can normally hear (except dogs and furseals!). That does not bother me during live acoustic performances (symphony orchestra, chamber music), which I enjoy very much; but I do often perceive too much treble (ear-piercing) on audio systems, including in my car.
In that case, maybe the tube suggestion is a good one. Maybe the ear-piercing treble I am hearing is a type of transistor distortion which is not normally audible to others. Tubes have a different distortion pattern, and that may suit my physiology better.
You're right - I've got to be missing something by firing my speakers at the back wall. Here is a nice excuse to buy a tube amp.
I come to ask myself whether this could possibly be a physiological problem / abnormality with my ears. Indeed, I do have quite an odd spectrum: I can clearly hear ultrasounds, i.e. dog whistles, which no one else can normally hear (except dogs and furseals!). That does not bother me during live acoustic performances (symphony orchestra, chamber music), which I enjoy very much; but I do often perceive too much treble (ear-piercing) on audio systems, including in my car.
In that case, maybe the tube suggestion is a good one. Maybe the ear-piercing treble I am hearing is a type of transistor distortion which is not normally audible to others. Tubes have a different distortion pattern, and that may suit my physiology better.
You're right - I've got to be missing something by firing my speakers at the back wall. Here is a nice excuse to buy a tube amp.
