Setting Listener Position

Installation and

Calibration

Lexicon

Surround Delay (Base and THX Versions)

Surround Delay Settings

Time Alignment (Dolby Digital version)

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.

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.