Yamaha EMX68S Owner's Manual - Page 19
Connections, n Connecting main speakers
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Connections 17 Connections When connecting various devices, make sure the cables and plugs have the correct rating. Be sure to use cables designed for the purpose when you connect speakers to speaker jacks. s Connecting main speakers There are three ways in which speakers can be connected to the EMX88S/EMX68S. The speaker impedance requirement varies depending on how you connect the speakers. Refer to the diagrams below to make sure the speaker impedance will not be lower than the specified value. s When the power amp select switch is set to MAIN L-R or MAIN (L+R)-MON: • 2-channel connections Connect either one or two speakers each to jacks A and jacks B. If the power amp select switch is set to MAIN L-R, the signals of the MAIN L and MAIN R buses will be output respectively to the speakers connected to the A and B jacks. If the power amp select switch is set to MAIN (L+R)-MON, the summed signals of the MAIN L bus + R bus and the signal of the MONITOR bus will be output respectively to jacks A and B. For either setting of the switch, use speakers with an impedance in the range of 4-8 ohms if you are connecting only one speaker to each set of outputs. A maximum output of 400W + 400W will be obtained when 4ohm speakers are used. Power amp select switch or Not used 4Ω-8Ω 4Ω-8Ω • 2-channel parallel connections If you connect two speakers to each set of outputs, use speakers with an impedance in the range of 8-16 ohms. A maximum output of 400W + 400W will be obtained when 8-ohm speakers are used. Power amp select switch or Not used 8Ω-16Ω 8Ω-16Ω 8Ω-16Ω 8Ω-16Ω EMX88S/EMX68S-Owner's Manual