Aiwa NSX-AV900 manual Press the Dolby PRO Logic button to select, Normal, To change the delay time

The Dolby Pro Logic feature and the center and rear speakers (standard) assure full-scale home theater sound. When playing back laser discs or video software that have been specially recorded with four-channel sound (left, right, center, rear) and steering logic (for sound directionality), astonishingly realistic sound surrounds the listener to create a new level of audio/visual entertainment.

Independent control of the four sound channels allows the listener to enjoy the same type of sound reproduction experienced in movie theaters. Voices are reproduced in the front and center sound field, while ambient sounds like cars and crowds are reproduced on all sides of the listener for an incredibly lifelike audio/video experience. Please read the following carefully to

“tune” the system’s output to match the characteristics of your

listening space.

Check the following:

●Before using the DOLBY PRO LOGIC, adjust the proper balance of speaker sound levels.

●Make sure the supplied speakers are properly connected and positioned. (See page 3)

●Make sure the TV set and video unit are properly connected. (See page 4)

●Make sure the laser disc, video tape, etc., support •u~ Dal-m’suRuOuMD\

ADJUSTING SPEAKER LEVEL BALANCE

1

2,4

3

BALANCE

The unit is equipped with a built-in test signal generator called a noise sequencer for easy balance adjustment of all four channels. The sequencer outputs a noise signal that “travels”from channel to channel, enabling the simple adjustment of sound level to achieve, at the listening position, the same apparent loudness from each channel.

Use the remote control.

1 Press the DOLBY PRO LOGIC button to select

NORMAL.

If PHANTOM or 3CH LOGIC appears, press the DOLBY PRO LOGIC button repeatedly until NORMAL is selected.

2 Press the MANUAL SELECT (TEST) button and hold it down for about four seconds until “L-CH” lights.

A noise signal is sent to each channel in turn in the following sequence.

L-CH: Left speaker-+ R-CH: Right speaker

r S: Surround speakers — C: Center speaker 3

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3 Adjust the sound level of the center and the surround speakers.

While “C or “S is displayed, press the DOWN l<< or UP ➤>1 button to adjust the volume of the center or surround speakers to match the level of the left and right speakers.

To adjust the balance between the left and right speakers, use the BALANCE control while “L”or “R”is displayed.

4 Press the MANUAL SELECT (TEST) button again to stop the noise signal.

If the surround speakers volume of the DSP is changed (See page 7), the DOLBY PRO LOGIC level is also changed.

About the channels

The left and right speakers create the stereo effect.

The center speaker helps achieve precise sound positioning over a broad sound field.

The rear-mounted surround speakers enhance the “depth”of

the sound field.

To change the delay time

The surround speakers reproduce sounds a split second after the front speakers. The delay is initially set to 20 ms (milliseconds).

To change this standard delay time, press the MANUAL SELECT (TEST) button on the remote control three times in NORMAL mode (or twice in PHANTOM mode) so that “T”is displayed. Then, press the DOWN 1<4 or UP ➤>1button. Each time one of the buttons is pressed, the delay time changes as shown below.

20ms * 30ms

To change the sound levels after adjusting the balance with the noise sequencer

The sound levels of the center or surround speakers can be adiusted durina Rlavback of laser discs or video software.

1 Press the MANUAL SELECT (TEST) button on the remote control once or twice to select “C(center) or “S(surround).

2While the “Cor %“is displayed, press the DOWN 1<< or UP ➤>1 button on the remote control to adjust the volume.