Yamaha EMX640 Owner's Manual - Page 7

The nominal input level and impedance are - 10 dB/600Ω for the AUX IN jack, and -10 dBV/ 600Ω for the TAPE IN jacks. 6 External output jacks (REC OUT/MONITOR/MAIN) These are output jacks which send line level signals from the EMX640 to external devices. A stereo recording device such as a cassette recorder or MD recorder can be connected to the REC OUT jacks, and a playback device such a power amp can be connected to the MONITOR and MAIN jacks. The signals sent from each jack are as follows. Rear panel 7 • REC OUT jacks: The MAIN bus signal before it has passed through the MASTER control and graphic equalizer • MONITOR jack: The MONITOR bus signal which has passed through the Monitor MASTER control and graphic equalizer • MAIN jack: The MAIN bus signal which has passed through the Main MASTER control and graphic equalizer The nominal output level and impedance are - 10 dBV/10 kΩ for the REC OUT jacks, and +4 dB/10 kΩ for the MONITOR/MAIN jacks. Rear panel 1 SPEAKERS B A B A POWER AMP 2 BRIDGE POWER ON / OFF POWER AMP 1 2 1 Speaker output jacks (POWER AMP 1 A/B, POWER AMP 2 A/B, BRIDGE) Speakers can be connected to these jacks. The EMX640 contains a two-channel power amp, and the two channels can be used independently (maximum output 200 W+200 W) or in bridge connection (maximum output 400 W). If the two channels are used independently, two speakers can be connected to the POWER AMP 1 A/B jacks and two more to the POWER AMP 2 A/ B jacks, for a total of four speakers. If the two channels are used in a bridge connection, only one speaker can be connected to the BRIDGE jack. If you wish to use the two channels independently, but only connect a speaker to the A jack or B jack, use a 4~8Ω speaker. When using the A and B jacks simultaneously, connect 8~16Ω speakers. In this case, be careful not to connect a speaker to the BRIDGE jack. If you are connecting a speaker to the BRIDGE jack, use a 8~16Ω speaker. In this case, be careful not to connect a speaker to the POWER AMP 1/2 A/B jacks. Note: Use the power amp select switch (control panel J) to select the signal which is sent to the jacks, or to activate the bridge connection. Caution: When using a bridge connection, do not connect anything to the POWER AMP 1 and POWER AMP 2 jacks. Likewise, when using the POWER AMP 1 and/or POWER AMP 2 jacks, do not connect anything to the BRIDGE jack. 2 Power switch This switch turns the power of the EMX640 on/ off. Note: Before turning the EMX640 on/off, turn down the MASTER controls of the MONITOR and MAIN section. EMX640-Owner's Manual