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My speakers are working, but they sound hollow and tinny, with almost no bass.

Poor bass response often indicates that the speakers are out of phase.

This means that the positive and the negative connections for one of the speakers have been reversed, which causes the speaker cone to move opposite the intended direction. When the out of phase sound of this speaker meets the in phase waves of the other speaker, the result is cancellation. This is most evident in the lower frequencies.

To see if this is the case, move the balance control all the way to the right or left while listening. If the sound quality improves at the extreme right or left balance setting, then your speakers are out of phase. To correct this, simply reverse the positive and negative wires on just one of the speakers.

If more than two speakers are involved in the system, we recommend that the phase of each speaker be confirmed by making sure that the positive and negative connections are consistent from the receiver to the speaker.
Article #20 - Last updated 04/12/2006
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