Gordon Gray
Well-known member
Hi guys,
I just posted this on another thread but thought this would be of interest to all members as a separate thread.
Following is a very simple, inexpensive way to ensure the tilt angle is exactly the same for both panels and a way to calculate the actual tilt angle.
All you need are a couple of pieces of string with a small weight (ie: a 1/4" bolt) or whatever attached at the bottom of the string.
Tape the top of the string to the exact same place at the front / top of the panel. The weighted portion should hang slightly above the floor. What you made is a simplified plumb bob with the string representing a line that is perpindicular to the front plane of your panel.
Once the string has stopped moving, measure the horizontal distance from the string to a fixed point at the bottom of the speaker. This can be a panel edge, cabinet edge or whatever.
Once the measured horizontal distance is exactly the same, the tilt of both speakers is the same.
If you want to calculate the offset angle from perpindicular (90 degrees), measure the horizontal offset and the vertical distance from the top of the panel to the point at which you measured the horizontal distance. Convert any "partial" inches" to its decimal equivalent. For example, if you measured 3/16", divide 3 by 16 and you get 0.19'.
Once you've converted the partial inches into their decimal equivalent, divide the horizontal distance by the vertical distance and then calculate the "arctan or tan-1". This calculation will give you the vertical offset angle clockwise (back) from perpindicular.
IMHO
1) Adjusting the tilt of both speakers to be exactly the same is critical to optimizing the sound of the ML's.
2) The closer the panel is to perpindicular, the better. You should hear audible improvements to horizontal / vertical imaging, as well as a better defined front / back soundstage presentation.
Good luck and have fun.
GG
I just posted this on another thread but thought this would be of interest to all members as a separate thread.
Following is a very simple, inexpensive way to ensure the tilt angle is exactly the same for both panels and a way to calculate the actual tilt angle.
All you need are a couple of pieces of string with a small weight (ie: a 1/4" bolt) or whatever attached at the bottom of the string.
Tape the top of the string to the exact same place at the front / top of the panel. The weighted portion should hang slightly above the floor. What you made is a simplified plumb bob with the string representing a line that is perpindicular to the front plane of your panel.
Once the string has stopped moving, measure the horizontal distance from the string to a fixed point at the bottom of the speaker. This can be a panel edge, cabinet edge or whatever.
Once the measured horizontal distance is exactly the same, the tilt of both speakers is the same.
If you want to calculate the offset angle from perpindicular (90 degrees), measure the horizontal offset and the vertical distance from the top of the panel to the point at which you measured the horizontal distance. Convert any "partial" inches" to its decimal equivalent. For example, if you measured 3/16", divide 3 by 16 and you get 0.19'.
Once you've converted the partial inches into their decimal equivalent, divide the horizontal distance by the vertical distance and then calculate the "arctan or tan-1". This calculation will give you the vertical offset angle clockwise (back) from perpindicular.
IMHO
1) Adjusting the tilt of both speakers to be exactly the same is critical to optimizing the sound of the ML's.
2) The closer the panel is to perpindicular, the better. You should hear audible improvements to horizontal / vertical imaging, as well as a better defined front / back soundstage presentation.
Good luck and have fun.
GG
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