Onkyo HT-S990THX instruction manual Using the THX Audio Settings, LFE Level Setting, Vol Display

Using the Listening Modes—Continued

LFE Level Setting

With this setting, you can set the level of the LFE (Low Frequency Effects) channel for Dolby Digital and DTS. The level can be set to –∞, –10 dB, or 0 dB (default).

If you find that the low-frequency effects are too loud when using one of these sources, set the level to –10 dB or –∞dB.

Vol Display

With this preference, you can choose how the volume level is displayed.

Abs (Absolute): Display range is MIN, 1 through 99, MAX.

Rel (Relative): Display range is –∞dB, –83…0…+16 dB (default).

The absolute value 84 is equivalent to the relative value 0 dB.

Using the THX Audio Settings

The THX Audio settings only affect speaker set A.

1		Press the [RECEIVER] button fol-
	RECEIVER	lowed by the [SETUP] button.

	SETUP
2	Use the Up and Down [ ]/[ ]
	buttons to select “6. THX Audio,”

and then press [ENTER].

3	Use the Left and Right [ ]/[ ]
	buttons to change the setting.

Press the Down [ ] button to select the next setting.

Repeat this step for the other settings.

4	Press the [SETUP] button.
	Setup closes.
	SETUP

The THX Audio settings are explained below.

BGC (Boundary Gain Compensation) Setting

A room’s boundaries (i.e., walls) and their construction may make bass sounds louder when the listening posi- tion or subwoofer is positioned close to such a boundary. This is called the boundary gain effect. With this setting, you can compensate for this and achieve a more accurate and flatter bass response.

On: Boundary Gain Compensation on.

Off: Boundary Gain Compensation off (default).

SB Spc (Surround Back Spacing) Setting

This setting is only available if the SurrBack ch setting in the Speaker Configuration is set to 2ch.

With this setting, you can specify the distance between your surround back speakers. To get the best from THX’s ASA (Advanced Speaker Array) technology, these speakers should be placed as close together as possible.

0–1 ft (0–0.3 m) (Default):

Select this if the speakers are between 0 and 1 foot (0–30 cm) apart.

1–4 ft (0.3–1.2 m):

Select this if the speakers are between 1 and 4 feet (0.3–1.2 m) apart.

>4 ft (>1.2 m):

Select this if the speakers are more than 4 feet (1.2 m) apart.

51