Optimus STAV-3790 Using Advanced Sound Options, Dolby Digital, Dolby Pro Logic Surround

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Using Advanced Sound Options

Your receiver has three special sound options: Dolby Digital, Dolby Pro Logic Surround, and DSP Effect. These special options enhance the sound from a connected program source.

Notes:

•To get the full benefit from programs encoded with Dolby Sur- round Sound, you need a stereo VCR or DVD/LD player.

•Dolby Surround does not operate correctly if the signal passes through a graphic equalizer. If you connected an equalizer to the TAPE 2 MONITOR jacks, do not select TAPE 2 MONITOR when you listen to Dolby Surround signals.

To turn on Dolby Digital or Dolby Pro Logic Surround, press .

PRO LOGIC appears on the display. The receiver automatically judges whether the received signal is Dolby Digital or Dolby Pro Logic Surround and switches itself to the correct mode. When the receiver receives 5.1- channel Dolby Digital signal, DIGITAL lights on the display.

To turn on a DSP effect, press DSP MODE until the desired option appears on the display along with SFC.

Dolby Digital

Dolby Digital is a compression format that records the sound of six channels (front L/R, center, surround L/R, and subwoofer). Since the subwoofer has a smaller frequency range, the term 5.1-channel is used. All channels’ sounds are digitally compressed using a method called AC-3. When playing back, the masking and digital filtering technology yields the best sound quality. The LFE (low frequency effect) technique adds strong bass sounds. See “Low Frequency Effect Attenuator Set- ting” on Page 18 to set the LFE level. When the source signal has an LFE channel, LFE lights on the display and the indicator next to it lights when the receiver actually receives LFE signal.

Dolby Pro Logic Surround

Dolby Pro Logic Surround puts you in the middle of the action. The cen- ter- and rear-channel speakers add incredible realism by directing the sound to the appropriate speakers.

DSP Effect

You can choose one of five DSP effects — HALL 1, HALL 2, JAZZ, DANCE, THEATER 1, or THEATER 2. Hall 1 simulates a large concert hall, Hall 2 simulates a concert hall with stone walls, and both are best suited for classical music. Jazz provides the acoustic effects generally heard in jazz clubs. Dance gives the effect of a discotheque. Both the- ater modes provide the effect of a movie theater. THEATER 1 sounds like a large movie theater. THEATER 2 seems like a smaller theater. Try each setting to find the best effect for your programs.

To change the DSP effect level, press DSP MODE (on the receiver or remote control), then hold down – EFFECT + (on the remote) to change the effect level. The effect can vary depending on the source program.

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