Alpine IVA-W502E owner manual Using the Pro Logic II Mode, Over Adjustment, 42-EN

Using the Pro Logic II Mode

Pro Logic processing can be conducted on the music signals recorded on two channels to achieve Dolby Pro Logic II surround sound. For two-channel Dolby Digital and DTS signals, there is also a “REAR FILL” function for outputting the signals of the front channel to the rear channel.

Setting item: DOLBY PLII/REAR FILL

Touch [ ] or [ ] of DOLBY PLII/REAR to select the desired mode.

PL II MOVIE: Suits the stereo TV shows and all programmes encoded in Dolby Surround. It improves the sound field directivity to near that of discrete 5.1-channel sound.

PL II MUSIC: Can be used for all stereo music recordings, and

provides a wide, deep sound field.

OFF: Turns DOLBY PL II function to OFF.

If PL II MUSIC is selected, the centre width can be adjusted with following operations.

This function offers the optimum vocal position by adjusting the centre channel position between the centre speaker and the L/R speaker. (The adjustments established in “Adjusting the acoustic image (BI-PHANTOM)” (page 44) are ineffective while this function is activated.)

Touch [ ] or [ ] of CENTER WIDTH CONT. to adjust the level.

The level can be adjusted between 0 to +7. When the level increases, the centre channel position moves from the centre speaker position to both sides.

Touch [OFF] of CENTER WIDTH CONT. to turn off the centre width control.

•This adjustment is effective when the setting of the centre speaker is SMALL or LARGE in the speaker setup settings (page 45).

•“REAR FILL” function:

Depending on the input signals, the sound may only be output from the front speakers. In this case, the “REAR FILL” function can be used to output signals from the rear speakers as well.

•Avoid stopping, pausing, switching the disc, cueing, fast-forwarding or switching the audio channel of this unit while making this adjustment. The setting is cancelled if the Decode mode is switched.

•This adjustment is ineffective when the speaker is set CENTER to OFF in “Setting the Speakers” (page 44).

•This function only works with two-channel signals. This operation is ineffective when 5.1-channel DTS or Dolby Digital signals are input.

•If the setting of REAR FILL is made when REAR MIX is ON, sound is unchanged in the rear fill setting because REAR MIX is given priority during 2 channel decoder other than linear PCM.

•For linear PCM signals, the voice is output from the rear speaker regardless of the REAR FILL and REAR MIX setting.

X-OVER Adjustment

Setting item: X-OVER

1 Touch [ ] or [ ] of X-OVER to select L+R or L/R.

L+R: Sets the same adjustment values for the left and right channels.

L/R: Different adjustment values can be set for the left and right channels.

2	Touch [	] of X-OVER.
	A speaker list on the X-OVER screen is displayed.
3	Touch [	] of the speaker to be adjusted.
	The screen changes to the X-OVER screen to be adjusted.
4	Adjust the crossover to your preference.

Selecting the Cut-Off Frequency

Touch [ ] or [ ] of FREQ., then select the cut-off frequency (crossover point).

The adjustable bandwidth differs depending on the speaker (channel).

Adjusting the Level

Touch [] or [ ] of LEVEL, then adjust the HPF or LPF level.

Adjusting the Slope

Touch [] or [ ] of SLOPE, then adjust the HPF or LPF slope.

•When the speaker is set to the “OFF” mode, the X-OVER for that speaker cannot be set. Refer to “Setting the Speakers” (page 44).

•Check the playback frequencies of the connected speakers before adjusting.

•In order to protect the speakers, there is no OFF setting for the subwoofer low pass filter (the slope remains the same).

•The HPF cannot be set SLOPE to OFF if Tweeter (TW) is selected for FRONT1 . Or, only the subwoofer is adjustable if STEREO is selected for the subwoofer.

42-EN