The Z-5500 speakers have a feature called the Pro Logic II (PLII) decoder that allows for extra control for the Z-5500. The PLII decoder is only available when using the Pro Logic effect.

To enable PLII, do the following:

1. Press the Effect button on the front of the control pod.
2. Cycle through the settings and choose PLII Movie or PLII Music.
3. To choose one of the following settings, press the Settings button and choose the setting you wish to use.
4. Any further adjustments are done by turning the knob on the front of the control pod.

The individual PLII settings are as follows:

• Dimension control: Allows the user to gradually adjust the soundfield either towards the front or towards the rear. This can be useful to help achieve a more suitable balance from all the speakers with certain recordings.

  

• Center Width control: Allows variable adjustment of the center image so it may be heard only from the Center speaker, only from the Left/Right speakers as a "phantom" center image, or various combinations of all three front speakers. With this control it is possible to create a balanced Left-Center-Right stage presentation and allows improved blending of the Center and main speakers, or to control the sense of image width, or "weight."

  

• Panorama mode: Extends the front stereo image to include the Surround speakers for a wraparound effect.