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In Reply to: RE: I'm in! 1.7i's on the way posted by Norman M on January 19, 2016 at 16:58:56
Generally speaking, I've found that room modes are minimized by locating the speakers using thirds of each dimension. Empirically, my stats have the smoothest bass at just under that - which works out to be eight some feet in a twenty-six foot long room.
The center of a room is typically bass shy, so you really don't gain anything by going past a third. Or putting your listening chair in the middle.
Follow Ups:
As it turns out, E, is the 1/3 thing you note is anecdotal. And not good math:
Based on YOUR measures, a better model would be based on PHI.
26*.618= about 16 of which 1/2 is the 8 feet you note.
Phi is 1.618 and 1/phi is .618 which is where I get above calculation.
I suspect you have pretty good ears based on your observations.
I wish I had the room to get my speakers even 5 feet from the front wall.
Too much is never enough
I'm thinking about moving my 1.7's in my listening room.I can place the speakers 6' from the rear wall,but that rear wall has a large glass window and a knee wall out about 1 foot from the glass.Would the window make a difference in the reflection or sonics?Thanks,
Dave
What you need behind dipoles is diffraction. Glass, on the other hand, is highly reflective and untreated would likely provide a scattered and confused image.
Can you shutter or drape the window? Or use room treatments directly behind the panels to provide diffraction?
There are vertical blinds over the windows.Would it help if I had the speakers out more that 6' from the reflective back wall?
For me, distance to wall is determined by optimum measured bass linearity. Get a Rat Shack SPL meter or smartphone app along with a Stereophile test disc. I would start there.
Then switch to assuring enough diffraction for back wave. There are a number of inexpensive DIY solutions available.
I will move the sofa to the new proposed listening position and then move the speakers for a test listen.Thanks,
Dave
Experiment with the blinds in 90 degrees 45 degrees if they are hard, and closed if they are fabric covered. No idea what would work best. The vertical blinds should take the glass out of the equation.
If your room allows it (not square, not 1:1.5 and not 1:2 proportions) then try the Limage setup. There are a few threads on the topic.
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