Aiwa Z-VR55 manual Press Dolby PRO Logic 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 recorded in Dolby Surround, 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. PIease 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 4).

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

●Make sure the laser disc, video tape, etc. , support unpowv SURROUNDI

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The unit is equipped with a built-in test signal generator called a noise sequencer for easy balance adjustment of all 5 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 COntrO1.

1 Press DOLBY PRO LOGIC to select NORMAL.

“NORMAL” is displayed.

If “PHANTOM” or “3 STEREO is displayed, press DOLBY

PRO LOGIC repeatedly until “NORMAL” is selected.

2Press MANUAL SELECT (TEST) and hold it down for about 4 seconds until “L” flashes.

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

~L: Left speaker- CEN: Center speaker+ R: Right speaker I 1- S-L: Left surround speaker - S-R: Right surround speaker ~

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

While “CEN”,“S-R”or %-L is displayed, press + or -

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 speakerb, see page 6. At this time, the DOLBY PRO LOGIC mode should be canceled by pressing DOLBY PRO LOGIC until the “P- OFF is displayed.

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

“If the surround speakers or the center speaker level of the DOLBY PRO LOGIC is changed, that of the DSP SURROUND system (page 7) and the DOLBY DIGITAL SURROUND (page

20)is also changed.

●While “S-R”or “S-L”is displayed, both surround speakers output the noise signal together. However, only the sound level of one surround speaker displayed as “S-R”or ‘S-l-” can be adjusted.

●When the sequencer outputs a noise signal, a clicking sound might be heard from the speakers due to the characteristics of the circuit. This is not malfunction.

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 MANUAL SELECT (TEST) on the remote control repeatedly in NORMAL or PHANTOM mode until “TIME”is displayed. Then, press the+

or -.	Each time	one of the buttons is pressed, the delay time
changes	as shown	below.
	15ms ~		201ms~30ms

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