S E T U P D E T A I L S
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Setup Details
Backward Tilt
The zA2.1 speakers are very directive in the vertical. There is thus about a 22 cm
[9”] range of ear height that will experience full spectrum sound. In addition, the
backward tilt serves to present the sound from all the drivers in phase (“time
aligned”) at your ears, which improves the smoothness of the frequency response
by minimizing the effects of interference between the drivers, and creates a high
degree of phase coherence.
It is thus important to ensure that your speakers are tilted so that they are both
equally well aimed upward at your ears when you are in your usual listening
position.
The speakers are shipped with the angle set for listening distances of 2.5 to 4
meters [8 – 13 feet] with a nominal ear height of 1m [38 inches]. Since listening
heights and distances vary, you might benefit from some experimentation with the
angle.
You can prop the front or rear of the speakers with books, tableware, whatever,
until the vertical centers of the speakers are fairly close to being aimed directly at
your ears.
Shim washers are provided in a small zip-lock style bag, and you can make your
new angle permanent by removing the feet at the front or rear of the speakers and
inserting enough shims to match the amount you shimmed in your test.
To remove the feet, set the speaker on its face. The rubber feet are held on with
screws that take a #3 Phillips screwdriver. The carpet spikes are screwed onto
studs, and are turned counterclockwise to remove them.
Stereo Image
The stereo image will be usually best when an equilateral triangle is created by the
speakers and the listening position. On the other hand, there is a strong argument
