Yamaha BR10 Owner's Manual - Page 4

ENGLISH Connecting the Speakers Full-range Connection Each speaker features two input / parallel connectors - two 1/4" phone jacks. Use one phone jack to receive input from your sound system / power amplifier. The other phone jack can be used to parallel-connect an additional speaker (keeping in mind the impedance considerations mentioned below). MIXING CONSOLE ST OUT L R GRAPHIC EQUALIZER POWER AMPLIFIER Impedance Considerations When connecting speakers in parallel be sure to check the rated load impedance of the power amplifier. Most power amplifiers are capable of safely driving speakers with minimum impedance of 8 ohms or 4 ohms. A pair of parallel-connected 8-ohm speakers have a total impedance of 4 ohms. Two 8-ohm speakers can safely be paralleled on one output. 4-ohm speakers, however, should not be parallel-connected with other speakers. These models can be connected in parallel, however, if you are using a power amplifier that can safely drive load impedances of 2 ohms or lower. Check your speaker impedance on page 18. SPEAKER SYSTEMS Phone Plug Wiring Phone plugs for connection to the phone jack inputs should be wired as shown to the right. Be sure to use proper speaker cable - NOT shielded instrument or line cable - for all speaker connections. HOT(+) COLD(-) 4