Harman-Kardon PT2500 Output Level Calibration, To calibrate your system, follow these steps

•PT2500(g).qx 10/23/96 7:36 AM Page 10

Installation & Configuration

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If side wall mounting is not practical, the speakers may be placed on a rear wall, behind the listening position. Again, they should be located so that the bottom of the cabinet is at least 24″ higher than the listeners’ ears. The speakers should be no more than 6 feet behind the rear of the seating area.

Subwoofers produce non-directional sound, so they may be placed almost anywhere in a room. Subwoofer place- ment is highly influenced by room size and shape, and the type of subwoofer used. Follow the instructions of the sub- woofer’s manufacturer, or experiment with the best location for a subwoofer in your listening room.

Output Level Calibration

For proper operation in the surround modes it is important that the level from all channels be as close to one another as possible. A small amount of time spent to properly calibrate the PT2500’s output levels will enable the unit to deliver all the performance it is capable of within the specific environment of your listen- ing room.

IMPORTANT NOTE: People are often confused about the operation of the sur- round channels. While some assume that sound should always be coming from each speaker, most of the time there will be little or no sound in the rear channels. This is because they are only used when a movie director or sound mixer specifical- ly places sound there to create an effect or pull you into the action. When the output levels have been properly set it is normal for the rear speakers to operate only occa- sionally. Artificially increasing the vol- ume to the rear speakers will destroy the illusion of an enveloping surround field that duplicates the way you hear sound in a movie theater or concert hall.

To calibrate your system, follow these steps:

1.Turn on the PT2500 and the compan- ion power amplifier.

2.Select the Dolby ProLogic mode using the Surround Mode 6button on the front panel.

3.Place the front panel Balance # control at its midpoint position, so that the indicator is pointing straight up in the 12 o’clock position. If the Balance control is normally in another position to compensate for speaker placement rel- ative to your preferred listening position, leave it in that spot.

4.Sit in the location that you will nor- mally occupy when using your PT2500.

5.Press the Test Tone p8button on the remote or front panel and note that a test noise signal will circulate between the channels.

•While the test noise circulates among the channels the word TEST and the channel name will appear in the front panel information display window. As the names change you should first listen to the location of the tone and verify that it matches the name displayed in the dis- play. If the display indicates a different location than the speaker the test noise is coming from you should turn off the unit and verify that the connections to the amplifier speakers are made to the correct terminals on the rear panel.

6.As the test signal circulates among the channels, use the Center Level

Up/Down oand Rear Level Up/Down jbuttons on the remote to adjust the level so that the volume from all channels sounds equal.

7.Press the Test Tone 8button again to turn the test signal off. Your system is now properly calibrated and further vol- ume adjustment should be made using the Master Volume nbuttons on the remote or the front panel Volume Control. ^Once the system is calibrat- ed no other adjustments are necessary.

Delay Setting

Delay time adjustment enables you to adjust the timing between signals at the front and surround channels.

The factory setting is appropriate for most rooms, but in some instances the use of an abundance of hard (reflective) room surfaces such as windows and wood floors, or soft (absorbent) surfaces such as thick carpeting, acoustical tiles and some furnishings may create an unpleasant effect. These surfaces, in conjunction with the size of the room, the height of the ceiling and other design aspects may cause the arrival of surround channel sounds to become dis- connected from rear channel sounds.

To adjust delay time it is necessary to select the ProLogic, Theater or Stadium modes using the Surround Mode Selector buttons on the front panel or remote h6.

Press the Delay Adjust button 4on the front panel to adjust the delay time as observed in the Information Display ðaccording to personal preference or the following formula:

1.Measure the distance from the listen- ing/viewing position to the front speakers.

2.Measure the distance from the listen- ing/viewing position to the surround speakers.

PT2500 rev (G) 10/23/96