Yamaha EMX660 Owner's Manual - Page 11

Installation/Connection 11 Installation/Connection Installation The EMX660 uses a forced cooling system with intake on the bottom of the rear panel and exhaust on the top of the rear panel to avoid blocking the heated air flow. Front NO 30cm or less NO Front Exhaust Intake Connection When connecting various devices, be sure to use cables and plugs of the appropriate standard. s Speaker connection There are three ways in which speakers can be connected to the EMX660. 1 Two-channel connection - A single speaker each can be connected to either the A or the B jack of POWER AMP 1 and of POWER AMP 2. 2 Two-channel parallel connection - Two speakers can be connected in parallel to both the A and B jacks of POWER AMP 1 and of POWER AMP 2. 3 Bridge connection - A single speaker can be connected to the BRIDGE jack. For each of these, the required speaker impedance will differ. Refer to the following diagram, and make sure that the speaker impedance is not less than the specified value. Two-channel connection MAIN BRIDGE MAIN MAIN MAIN MONITOR PS MAIN BRIDGE MAIN MAIN MAIN MONITOR B A POWER AMP 2 SPEAKERS No connection BRIDGE B A POWER AMP 1 4Ω~8Ω Main/Monitor Speaker 4Ω~8Ω Main Speaker Two-channel parallel connection B A POWER AMP 2 SPEAKERS No connection BRIDGE B A POWER AMP 1 8Ω~16Ω 8Ω~16Ω Main/Monitor Speakers 8Ω~16Ω 8Ω~16Ω Main Speakers Bridge connection MAIN BRIDGE MAIN MAIN MAIN MONITOR BNoA connection POWER AMP 2 SPEAKERS BRIDGE BNoA connection POWER AMP 1 8Ω~16Ω Main Speaker EMX660-Owner's Manual