Xantech XB8W, XB65CS, XB8C, XA65W, XA8W Advanced Application Large AREA, Multiple Speaker Systems

ADVANCED APPLICATION – LARGE AREA, MULTIPLE SPEAKER SYSTEMS

Large areas such as gathering rooms or banquet halls may require more than a single pair of speakers. Multiple speakers can be connected to the same amplifier channel. This application requires careful understanding of the amplifiers capabilities.

1)Determine what the minimum speaker impedance the amplifier can handle. This should be noted on the amplifier or the amplifier’s instruction manual. Typically, most amplifiers can had a minimum of 4-ohms per speaker channel.

2)The XA and XB series speakers are 6-ohms. By connecting two 6-ohm speakers to one amplifier channel, a 3-ohm speaker load is created. For amplifiers with a 4-ohm minimum, this is an improper application that can cause damage to the amplifier.

3)The XA and XB series speakers provide a third wiring post for this type of application. Remove the yellow plastic cap to expose the “+8” wiring post. Using the “+8” wiring post will make the XA and XB series speaker 8-ohms. By connecting two 8-ohm speakers to one amplifier channel, a 4-ohm speaker load is created. For amplifiers with a 4-ohm minimum, this is an acceptable application.

The figure above shows multiple speakers connected to a single output amplifier channel by using FIM (flexible impedance matching). To make sure the impedance matches the amplifiers minimum 4- ohm specification, the “+8” post is used. The yellow cap that was once on the “+8” post is moved to the “+6” post as an added precaution.

Note: A 6-Ohm load is the optimum load for a single speaker per channel. The best sound is a result of a single 6-Ohm connection.

Be sure to verify the amplifiers minimum impedance capability.