Yamaha ns-p285 Owner's Manual

Also see for NS-B20: Service manual Service manual Connection guide Owner's manual Owner's manual

Contents

5 EnEnglish• If you replace the front speakers (NS-B285) withother speakers, you will need to re-adjust thesubwoofer’s volume.• The frequency characteristics graphs below showhow the subwoofer and front speakers worktogether to provide a full-range sound.Frequency characteristicsIf this product doesn’t work as expected, look for a possible cause below. If the issue you are experiencing is notlisted, or you cannot resolve it after reading through these instructions, disconnect the power cable and contact anauthorized Yamaha dealer or service center.■ Subwoofer (NS-SW280)The following graph shows thefrequency characteristics of thesubwoofer (NS-SW280).The following graph shows the combined frequency characteristics ofthe subwoofer (NS-SW280) and front speakers (NS-B285), and centerspeaker (NS-C385).TroubleshootingIssue Possible cause RemedyThere’s no sound. The speaker cables are notconnected properly.Make sure the speaker cables are connected properly.The sound is very quiet. The speaker cables are notconnected properly.Make sure the speaker cables are connected properly:L (left) to L, R (right) to R, “+” to “+” and “–” to “–”.20 50 100 200 500 Hz405060708090100 dB20 50 100 200 500 Hz405060708090100 dBNS-SW280NS-B28520 50 100 200 500 Hz405060708090100 dBNS-SW280NS-C385Issue Possible cause RemedyThe POWER switch is setto ON but the subwooferdoesn’t work.The power cable is not connectedproperly.Set the POWER switch to OFF, then make sure the powercable is connected properly.There’s no sound. The VOLUME control is set to 0. Turn up the VOLUME control.The subwoofer cable is notconnected properly.Make sure the subwoofer cable is connected properly.The subwoofer is tooquiet.The source material doesn’tcontain much bass.Try playing source material that contains more bass.Bass sounds are being cancelledout by standing waves.Reposition the subwoofer, or break up parallel wall surfacesby placing bookshelves or other large objects along the wall.