Adcom GTP-760 owner manual Input Settings

Second, the subwoofer trim appears in the CHANNEL BALANCE menu, but not during the operation of the noise sequencer. Because the subwoofer operates at a limited frequency range and because the sound level measurement is weighted, the noise sequencer method of channel trimming is often unreliable in setting the subwoofer level. Using such an approach can sometimes lead to “pegging” the subwoofer trim to its highest level on the GTP-760 to compensate. It is better to use the sequencer to set the level of the main, center and rear channels, then use the external volume control on the subwoofer itself to balance it to the system. Fine- tuning of the subwoofer level may still be done in the CHANNEL BALANCE menu while listening to a 5.1 channel soundtrack.

3.5 INPUT SETTINGS

Congratulations, your GTP-760 is now fine-tuned and ready for enjoyment. The steps that have been completed in sections 3.2 through 3.4 need only be repeated if you change a component in your system or significantly alter the position of your speakers. In fact, you should consciously avoid using the CHANNEL DELAYS, SPEAKER SIZE or CHANNEL BALANCE menus again during normal operation as you will upset the system dependent parameters carefully entered during this procedure.

While the three setup menus should be avoided, you may elect to use the INPUT SETTINGS menu of the OSD during normal operation. Highlight INPUT SETTINGS in the SETUP menu and press select/play on the remote. You will see a screen similar to the following:

INPUT SETTINGS

INPUT:TUNER

VIDEO: COMPOSITE

MODE: 2 CHANNEL

DIALOG ENHANCE: OFF

DYNAMIC RANGE: N/A

LEVELS MENU

UNDO CHANGES

DONE

This screen essentially broadcasts the same information displayed on the front panel of the GTP-760 but in a manner that can easily be viewed from the listening position. The available choices in each of the fields can be selected with the < and > buttons on the remote control.

INPUT - identifies the selected input

MODE - indicates the operating mode of the selected input (stereo, Pro Logic, DTS, Dolby Digital,etc.).

DIALOG ENHANCE - indicates whether the dialog enhance function is active. The “dialog enhance” feature boosts midrange frequencies in the front and center speakers to emphasize dialog intelligibility.

DYNAMIC RANGE - indicates the level of compression currently selected. (note: This applies only to digital inputs receiving a Dolby Digital signal). Choices are Full, 75%, 50% and 25%. The field shows N/A for modes when this feature is not available.

The other two fields, VIDEO and LEVELS MENU, require further explanation.

The VIDEO field displays the video mode of the selected source. As described in the Composite or S-Videobox in section 1.2, the GTP-760 can save the video mode for each source. If you have elected to use either all composite or all S-Video connections, then there is no reason to change the settings in this field. (In fact it should be avoided as doing so may prove confusing. If you inadvertently highlight the VIDEO field and use the

<or > remote arrow buttons, your screen display and background may disappear from the television. You have changed the video mode of the GTP-760 for the selected source. If this happens, without pressing any other

remote buttons, simply press either of the < or > arrows again and the video screen will reappear). 33