Bose 149393 manual Testing the speakers and equalizer, English, Setting Up, To test the equalizer

English

Setting Up

Testing the speakers and equalizer

Choose the test method appropriate to your system:

To test the TAPE MONITOR connection

1.Turn off or disconnect any non-901 speakers or headphones that may be connected.

2.On the 901® active equalizer, press the MONITOR button IN to TAPE, and the BASS

button­ OUT to position 1.

3.Set the MID-BASS and MID-TREBLE sliders to center positions.

4.Press your receiver or amplifier TAPE or TAPE MONITOR button to the OUT or NORMAL position so it is not selected.

5.Play music through your system. You should hear both speakers. Do not worry about the sound quality at this point. The equalizer is not yet engaged. If there is no sound from one or both speakers, check the receiver and speaker connections.

6.Move the receiver BALANCE control to the extreme left and then to the extreme right. This tests the left and right channel orientation. If the channels are reversed, check the connections.

To test the equalizer

You have now tested your speakers and their wiring. The following steps test the equalizer and its wiring:

1.With the speakers playing, press the receiver TAPE or TAPE MONITOR button IN, select- ing the PLAY or MONITOR position. All sound should stop. If it does not, check your equalizer wiring. Be sure the 901 active equalizer MONITOR button is set to position 2 (TAPE).

2.Press the 901 active equalizer MONITOR button to SOURCE, position 1. The sound should return with full, natural sound characteristics. The system is now ready for use. If the sound does not return, and the equalizer power indicator is lit, the equalizer is

probably­ connected incorrectly. Review equalizer connections.

To test the PRE AMP OUT/MAIN AMP IN connection

If you have connected the 901 active equalizer to the PRE AMP OUT/MAIN AMP IN connec- tion, follow these instructions to test the speakers, equalizer, and wiring before connecting any other equipment to your system.

1.Turn off or disconnect any non-901 speakers or headphones that may be connected. If your system has a speaker selector switch, set it so that only the 901 speakers are

connected­ to your power amplifier.

2.On the 901 active equalizer, press the MONITOR button OUT to SOURCE, and the BASS button OUT to position 1.

3.Set the MID-BASS and MID-TREBLE sliders to center positions.

4.Play music through your system. You should hear both speakers. If there is no sound from one or both speakers, check to see that the power indicator on the equalizer is lit, then check the receiver and speaker connections.

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