JVC RX-DP20VBK manual Setting the THX Audio-THX Audio Setup, Apart, Close

7BASS PEAK LIMIT

When this setting is “ON,” Bass Peak Limit functions so that sounds exceeding the preset peak level (see below) will be cut off.

When this setting is “ON,” you can set the bass peak level using the bass test tone (see below) to eliminate bass sound distortion.

Select one of the following:

ON	: Normally select this.
OFF	: Select when not using Bass Peak Limit.

Note:

If “THX ULTRA2 SUBWOOFER?” is set to “YES,” this function is not available.

7BASS TEST TONE

Only when “BASS PEAK LIMIT” is “ON,” you can emit the bass test tone through the subwoofer and/or other speakers (depending on your settings on the SPEAKER SETTING submenu), and adjust the bass peak level (see below).

•The bass test tone can be emitted when one of the Surround/ THX/DSP modes is in use.

Select one of the following:

ON	: Select to emit the bass test tone.
OFF	: Select to stop the bass test tone.

Notes:

•If “BASS PEAK LIMIT” is set to “OFF,” this function is not available.

•While transmitting the bass test tone, Parametric Equalizer and Midnight Mode will be canceled temporarily.

7BASS PEAK LVL

Only when “BASS PEAK LIMIT” is “ON,” you can set the bass peak level so that sounds exceeding the peak level will be cut off to prevent the bass sound distortion.

Adjust the bass peak level as follows:

•While listening to the bass test tone, press and hold # (RIGHT) to increase the bass test tone output level, and stop increasing the level just before the test tone is distorted. The level where you stop can be memorized as the bass peak level.

•Each time you press # (RIGHT) or @ (LEFT), the bass peak level changes by ± 1 dB.

•You can adjust the level within the range of “– – – dB (minimum),” and “–71 dB” to +18 dB.” When shipped from the factory, the level is set at “–10 dB.”

Notes:

•When you set “BASS TEST TONE” to “ON,” the bass peak level is reset to “– – – dB” (minimum).

•If “THX ULTRA2 SUBWOOFER?” is set to “YES,” this function is not available.

5 Setting the THX Audio—THX AUDIO SETUP

These settings are required to obtain the optimum effect from the THX modes.

Note:

When “SUBWOOFER” is set to “NO” on the SPEAKER SETTING submenu (see page 38), this submenu is not available in the following cases:

–If and “SURR BACK SP” is also set to “NONE,” or

–If “SURR BACK OUT” is also set to “1SPK.”

7THX ULTRA2 SUBWOOFER?

A THX Ultra2 certified subwoofer can reproduce very low bass sounds (up to 20 Hz) and, if it is used at home, the subwoofer sounds may be reinforced unsuitably because of resonance and reflection caused by the floor and walls (boundary gain).

Using this function, you can compensate for this over-enhanced bass sound through the subwoofer.

Select one of the following.

YES	: Select when a THX Ultra2 subwoofer is used.
NO	: Select when a conventional subwoofer is used.

7BOUNDARY GAIN COMPENSATION

When the subwoofer sounds are unsuitably enhanced by so- called boundary gain, compensate for it using this function.

Select one of the following:

ON	: Select to apply the compensation.
OFF	: Select when no compensation is required.

Note:

If “THX ULTRA2 SUBWOOFER?” is set to “NO,” this function is not available.

7SBACK SP POSITION

Register the installation position of the surround back speakers—whether they are placed close to each other or apart from each other.

This setting takes effect only for the THX modes:

APART	: Select when two surround back speakers are
	placed apart from each other (more than 120
	cm)—recommended for THX Ultra2 Cinema
	and THX Music modes.
CLOSE	: Select when two surround back speakers are
	placed close to each other (from 30 cm to 120
	cm)

TOGETHER : Select when two surround back speakers are placed adjacent to each other (less than 30 cm).

41