JVC RX-7040B, RX-7042S manual Using the Surround Modes

Using the Surround Modes

This unit activates a variety of Surround modes automatically. The basic settings and adjustments stored (see pages 21 to 29) are applied.

Reproducing Theater Ambience Introducing the Surround Modes

In a movie theater, many speakers are located on the walls to reproduce impressive multi-surround sounds, reaching you from all directions.

With these many speakers, sound localization and sound movement can be expressed.

Surround modes built in this receiver can create almost the same surround sounds as you can feel in a real movie theater—with only five to seven speakers (plus subwoofer).

		Subwoofer
Left front speaker	Center speaker	Right front speaker
(L)	(C)	(R)
Left surround		Right surround
speaker (LS)		speaker (RS)
Surround back speakers (SB)
30

Dolby Digital*1

Dolby Digital is a digital signal compression method, developed by Dolby Laboratories, and enables multi-channel encoding and decoding (1ch up to 5.1ch).

•When Dolby Digital signal is detected through the digital input,

the DIGITAL indicator lights up on the display.

Dolby Digital 5.1CH

Dolby Digital 5.1CH (DOLBY D) encoding method records and digitally compresses the left front channel, right front channel, center channel, left surround channel, right surround channel, and LFE channel signals (total 6 channels, but the LFE channel is counted as 0.1 channel. Therefore, called 5.1 channel).

Dolby Digital enables stereo surround sounds, and sets the cutoff frequency of the surround treble at 20 kHz, compared to 7 kHz for Dolby Pro Logic. As such, the sound movement and “being-there” feeling are enhanced much more than Dolby Pro Logic.

Dolby Digital EX

Dolby Digital EX (DOLBY D EX) is a digital surround encoding format that adds the third surround channels, called “surround back.”

Compared to the conventional Dolby Digital 5.1CH, these newly added surround back channels can reproduce more detailed movements behind you while viewing the video software. In addition, surround sound localization will become more stable.

•You can use Virtual 6.1-channel surround when playing back Dolby Digital EX software without connecting the surround back speakers. This reproduce the back sound field as if the surround back speakers exist, so that you can still feel the great surround effect from behind.

The VIRTUAL SB (Surround Back) indicator lights up on the display.

Dolby Pro Logic

Dolby Surround encoding format records the left front channel, right front channel, center channel, and surround channel (monaural) signals into 2 channels.

The Dolby Pro Logic (PRO LOGIC) decoder built in this receiver decodes these 2 channel signals into 4 original channel signals (plus subwoofer)—matrix-based multi-channel reproduction.

•When Dolby Pro Logic is activated, the indicator lights up on the display.