Yamaha DSP-A1 Owner's Manual - Page 23

English Ⅵ To drive main, center, front effect and/or rear speakers with external amplifiers The speaker connections described on page 18 are fine for most applications. If for some reason, however, you wish to drive main, center, front effect and/or rear speakers with your existing amplifier, etc., the following terminals are available for connecting external amplifier(s) to this unit. COUPLER MAIN CH PRE OUT MAIN IN CENTER OUT SUBWOOFER MONO SPLIT FRONT REAR (SURROUND) 3 SUBWOOFER terminals SUBWOOFER MONO terminal When using a subwoofer, connect its amplifier input to this terminal. Frequencies below 90 Hz distributed from the main, center and/or rear channels are output from this terminal. Signals of LFE (low frequency effect) generated when the Dolby Digital (AC-3) or the DTS is decoded are also output if they are assigned to this terminal. OUT IN 1 2 345 1 MAIN CH PRE OUT/MAIN IN terminals The PRE OUT terminals are for main channel line output, and the MAIN IN terminals are for line input to the built-in main channel amplifier. The PRE OUT and MAIN IN terminals must be connected with jumper bars when the built-in amplifier is used. However, if you drive main speakers with an external stereo power amplifier, first remove the jumper bars, and then connect the input terminals of the external amplifier (MAIN IN or AUX terminals of an amplifier or a receiver) to the PRE OUT terminals. No connection is needed to the MAIN IN terminals. * Output signals from the PRE OUT terminals are affected by the use of BASS, TREBLE, BALANCE controls and BASS EXTENSION switch. 2 CENTER OUT/IN terminals The CENTER OUT terminals are for center channel line output, and the CENTER IN terminal is for line input to the built-in center channel amplifier. The lower side of CENTER OUT terminals and the CENTER IN terminal must be connected with a jumper bar when the built-in amplifier is used. However, if you drive one or two center speakers with an external power amplifier (for each), first remove the jumper bar, and then connect the input terminal(s) of the external amplifier(s) to either or both CENTER OUT terminals. No connection is needed to the CENTER IN terminal. SUBWOOFER SPLIT terminals When using two subwoofers, connect their amplifier inputs to these terminals. Low bass signals that are output from the SUBWOOFER MONO terminal are also output from these terminals. However, signals from the left main and left rear channels are output to the SPLIT L terminal, and signals from the right main and right rear channels are to the SPLIT R terminal separately. 4 FRONT terminals These terminals are for front effect channel line output. There is no connection to these terminals when you use the built-in amplifier. However, if you drive front effect speakers with an external stereo power amplifier, connect the input terminals of the external amplifier (MAIN IN or AUX terminals of an amplifier or a receiver) to these terminals. 5 REAR (SURROUND) terminals These terminals are for rear channel line output. There is no connection to these terminals when you use the builtin amplifier. However, if you drive rear speakers with an external stereo power amplifier, connect the input terminals of the external amplifier (MAIN IN or AUX terminals of an amplifier or a receiver) to these terminals. Notes • Output level of signals from all of these terminals are adjusted by the use of VOLUME control on the front panel or MASTER VOLUME keys on the remote control transmitter. • If an external power amplifier is connected to the FRONT or REAR output terminals, the corresponding internal amplifier will be turned off and no output will be available at the SPEAKERS terminals. 21