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

Lexicon

Installation and

Calibration

The Listener Position menu is used for setting the surround and center

delays and calibrating the Panorama effect.

Note that the Time Alignment parameter replaced the Surround Delay

parameter in Base and THX versions of the DC-1. The Surround Delay

parameter is described below.

When presented with several similar sounds (as in the case of surround

sound) we tend to localize on the first sound we hear. Because surround

speakers are often closer to the listening area than the main speakers,

occasional leakage of the front channel sound into the surround speakers

can be audible and distracting. Delaying the sound from the surround

speakers gives the sound from the front speakers a chance to reach the

listener before the surrounds kick in. The SURROUND DELAY control in

the Listener Position menu allows the user to set the surround delay

between 15 and 30 milliseconds in one millisecond increments. The best

setting will depend on the distance between the main listening area and

the front speakers as well as the distance between the main listening area

and the surround speakers. This global surround delay setting is used by

surround effects that do not have their own surround delay setting.

Surround Delay Settings

Surround Delay

(Base and THX Versions)

Setting Listener Position

Time Alignment

(Dolby Digital version)

In the Dolby Digital version of the DC-1, the Time Alignment control

electronically aligns all of the loudspeakers in a system. Although this

adjustment is not a substitute for proper speaker placement, it will help to

ensure accurate signal arrival times at the listening position.

To set up Time Alignment, you must physically measure the distance from

the primary listening position to the front baffle of each individual speaker

in your system. An easy and accurate way to accomplish this is to have a

person sit in the primary listening position, holding the end of a measuring

tape, while a second person extends the tape measure to the front baffle of

each speaker in turn.

To enter these values, select TIME ALIGNMENT in the Listener Position

menu and press SELECT. Use MENU ▲ and ▼ to highlight feet or meters

and press SELECT. The display will change to show the Speaker Range

menu. Use SELECT to highlight NEAREST SPKR and use MENU ▲ and ▼

to enter the actual distance. Press DONE.

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 75 76

No comments

Lexicon DC-1 User Manual Page 38