Lexicon DC-1 User Manual download pdf (Page 38)

Lexicon

System

Configuration

When calibrating right, if your left ear is

in the silent band, the speaker angle is

correct.

If the two silent bands are too close, lower

the Speaker Angle; if they are too far

apart, raise the Speaker Angle.

Move your head from side to side to find

the position where the noise is full left,

and the right ear hears near total silence.

SPEAKER ANGLE is the angle between

the main speakers as seen from the listen-

ing position — here it is about 60°. LIS-

TENER POS allows you to adjust for an

offset listening position.

CAL NOISE is a special digitally generated signal to aid in calibrating the

Speaker Angle and Listener Position parameters. Note that in all cases,

sound will actually be produced by both front loudspeakers. The adjust-

ments affect the perceived directionality of the sound.

The SPEAKER ANGLE, displayed in degrees, adjusts for wide or narrow

speaker spacing (relative to the listening position). For the two canceling

signals to arrive at both ears at the same time you must be centered precisely

between the speakers. It will be easiest to calibrate this parameter if you

start equidistant from the two front speakers, even if this is not your normal

listening position. Once you have heard the effect and set the speaker angle,

the Listener Position parameter will allow you to “move” the effect to your

customary listening position.

To set the Speaker Angle, center yourself symmetrically between the two

front speakers. Turn CAL NOISE on and select LEFT ONLY. The test signal

should sound as though it is coming from off to your left side, well beyond

the left speaker, with near-total silence in your right ear. Still facing forward,

move your head from side to side until the effect is strongest. When you

have found this sweet spot you will notice an almost physical sensation of

silence in your right ear.

Now, select RIGHT ONLY. Again, shift your head from side to side to find

the sweet spot, this time looking for the point where the sound is strongest

in your right ear. Select LEFT AND RIGHT to determine if the sweet spots

from the left and right tests coincide. If they do not coincide, return to the

SPEAKER ANGLE display. If the first sweet spot is to the left of the second,

press ▲ ; if it is to the right, press ▼.

If your normal listening position is not centered between your two front

speakers, once you have corrected the speaker angle setting, you can

"move" the sweet spot to that position. To do this, select LISTENER POS and

use ▲ and ▼ to move the effect. As you adjust the position, the display will

indicate motion to the left of center (L001,L002,L003...L127), CENTER, or to

the right of center (R001,R002,R003...R127). The numbers represent ap-

proximately 1/3", but are provided primarily as a general reference.

Panorama is now calibrated. Press DONE repeatedly to step back to the

main setup menu.

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Lexicon DC-1 User Manual Page 38

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