Adcom GTP-760 owner manual 3.3SPEAKER SIZE

In a typical home theater system, the distance from each speaker to the listening position will be different. The most common example: in many home theaters the center and rear speakers sit closer to the listener than the main speakers. In such a situation the sound emitted from the closer speakers will be heard first. For many movie soundtracks the effect of this may be very mild, perhaps unnotice able. In others, it can be subtly distracting. To compensate for this, the GTP-760 can slightly delay the audio sent to the center and rear (closer) speakers. In this way, when playing Dolby Digital or Dolby Pro Logic soundtracks, the sound from all speakers arrives uniformly at the listening position as intended by the film’s producer[FD1].

L	C	R
DIM L	DIM C	DIM R
LS		RS
DIM LS		DIM RS

To set the center channel delay, use the ( or ( buttons to highlight the CENTER field. Measure the distance from the listening position to the center speaker (DIM C) and to one of the main speakers (DIM L or DIM R). Subtract the center channel distance from the main L or R channel distance. For example, if the main speakers are 15 feet from the listening position and the center speaker is 12 feet, the difference is 3 feet and the center channel delay is set to 3 milliseconds (15-12 = 3). Use the < and

>arrow button on the remote control to change the CENTER delay settings. The GTP-760 can delay the center channel output up to 5 milliseconds and thus compensates for center channel speakers that are up to 5 feet closer to the listening position than the main left and right speakers.

In rare system setups, the center channel speaker is actually farther away than the main left and right speakers. In these cases, set the center channel delay to 0mS.

Similarly, for the rear channels, use the ( or ( buttons to highlight the REAR field. Measure the distance from the listening position to either the left or right surround speaker (DIM LS or DIM RS). Subtract the rear speaker distance from the main speaker distance. The resulting distance is equivalent to the delay in milliseconds for the rear delay setting. For example, if your rear speaker distance is 9 feet and the front distance is 15 feet, the correct rear channel delay setting is 6 milliseconds (15-9=6). Again, set the rear channel delay to 0 if the rear channels are further from the listening position than the fronts. When both delays have been entered, highlight DONE and press select/play to save your settings and return to the SETUP menu.

3.3SPEAKER SIZE

In the SETUP screen, use the You will see:

>

or

>

arrows to highlight SPEAKER SIZE and press select/play.

SPEAKER SIZE

SELECT PRESET: 1

MAIN: SMALL

CENTER: ON

REARS: ON

SUBWOOFER: ON

UNDO CHANGES DONE

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