[. . . ] You can also add audio from a variety of audio sources when editing a video tape. * See your VCR or LD player's instruction manual if you need help. [. . . ] Adjust the volume level so that the test tone from each speaker is at the same level from your listening position. The bass sound of the centre channel is output from the front speakers (because a small speaker cannot produce enough bass). Front and rear speakers, and a small centre speaker The centre and rear levels are indicated on the LEVEL meter in the centre of the display during adjustment. Front and rear speakers, and a large centre speaker Front and centre speakers, no rear speaker The sound of the rear channel is output from the front speakers. You can make the surround sound more prominent by increasing the EFFECT level. This control lets you adjust the "presence" of the surround effect in five steps (1-5). Changing the effect level may not produce major variations in the surround effect when used with certain playback sources. If you experience any of the following difficulties while using the amplifier, use this troubleshooting guide to help you remedy the problem. / Check that the connecting cords are away from a transformer or motor, and at least 10 feet (3 meters) away from a TV set or fluorescent light. No sound or only a very low-level sound is heard from the rear speakers. Check the speaker leves using the test mode and make sure to use stereo recordings and to set the TV and VCR to stereo reception mode. / Replace both batteries in the remote with new ones if they are weak. To obtain the best possible surround sound, select one of the following four centre modes according to your speaker system. Select 3 CH LOGIC mode if you have front and centre speakers but no rear speaker. [. . . ] The test tone is output from the front and the rear speakers alternately. Select PHANTOM mode if you have front and rear speakers but no centre speaker. [. . . ]