Yamaha XM4180 Owner's Manual - Page 10

■ Rear Panel (XH200) 21 3 4 5 67 1 Euroblock connectors These balanced Euroblock connectors are used to connect input signals. 2 HPF switches These switches are used to set the cutoff frequency of the HPF (High Pass Filter) for each channel. Frequencies below 40Hz or 80Hz are filtered using a 12 dB/ octave high pass filter. * When the amplifier is set to 40Hz, make sure that the speaker transformer is capable of sufficiently handling low frequency signals. 7 AC IN Connect one plug of the included AC cable to this inlet. Connect the other plug of the AC cable to an AC outlet that meets the power supply conditions printed on the label at the top of the unit. Be careful when inputting low frequency signals; excessive levels at low frequencies may cause damage to the speaker, speaker transformer or to the amplifier itself. 3 Output voltage switch This switch is used to change the output voltage between 70V and 100V. 4 MONITOR/REMOTE terminals This terminal is used to connect the external device for monitoring or remote control. Refer to "MONITOR/ REMOTE PIN layout" on page 14. 5 SPEAKERS terminals This unit includes barrier strip terminals, which are wired as shown below. Hot , Cold Refer to "Speaker connections (XH200)" on page 10 for more information on the impedance of speaker systems that can be connected to these terminals. 6 GND terminal If you are having a problem with hum or noise, use this terminal to connect to ground (earth) or to connect to the chassis of a mixer, preamp, or other device in your system. ● Speaker connections (XH200) The XH200 enables you to connect in parallel fashion multiple high-impedance speakers that support 70V or 100V line output. The number of speakers that can be connected varies depending on the speaker's rated input. You can connect speakers with a total rated input per channel of up to 200 W. For example, if you are using speakers with a rated input of 10 W, you can connect up to twenty speakers. If you are using speakers with a rated input of 20 W, you can connect up to ten speakers 10W 10W 10W Rated input 10W 10W 10W 10 W x 20 speakers (200W) 10 W x 20 speakers (200W) 10 XM4180/XM4080/XH200 Owner's Manual 8