Yamaha RX-A2070 RX-A3070/RX-A2070 Owners Manual - Page 40

■ Connecting an external power amplifier When connecting an external power amplifier to enhance speaker output, connect the input jacks of the power amplifier to the PRE OUT jacks of the unit. The same channel signals are output from the PRE OUT jacks as from their corresponding SPEAKERS terminals. Caution • To prevent the generation of loud noises or abnormal sounds, make sure the followings before making connections. - Remove the power cable of the unit and turn off the external power amplifier before connecting them. - When using the PRE OUT jacks, do not connect speakers to the corresponding SPEAKERS terminals. - When using a pre-main amplifier that does not have the volume control bypass, turn up the volume of the pre-main amplifier enough and fix it. In this case, do not connect other devices (except the unit) to the pre-main amplifier. (Example) Connecting front speakers via an external power amplifier PRE OUT (FRONT) jacks HDMI (HDCP2.2) V 2 AV 3 AV 4 AV 5 AV 6 AV 7 NETWORK ( 3 NET ) NT VIDEO PB PR PB UT PR PRE OUT (SINGLE) (FRONT) 1 2 TRIGGER OUT 1 12V 0.1A MAX. TOTAL 2 REMOTE IN OUT PR RS-232C L 3/ NCE FRONT SURROUND SUR. BACK (REAR) SUBWOOFER CENTER ROUND L R SURROUND BACK L SINGLE SPEAKERS R EXTRA SP2 L R.PRESENCE CENTER FRONT SUR R R FRONT L ZONE 2/ZONE 3/F.PRESENCE The unit (rear) Main input jack MAIN IN L R Amplifier with volume control bypass (such as A-S3000) HDMI OUT (HDCP2.2) 2 1 (ZONE OUT) ARC AV 1 (1 BD/DVD) AV 2 AV 3 HDMI (HDCP2.2) AV 4 AV 2 ) AV 3 AV 4 COMPONENT VIDEO Y AV 1 PB PR A AV 5 B Y AV 2 PB ZONE OUT/PRE OUT PR PRE OUT (SINGLE) (FRONT) 1 AV 6 AV 7 NETWORK ( 3 NET ) TRIGGER OUT 1 12V 0.1A MAX. TOTAL 2 REMOTE IN OUT RS-232C 5 COAXIAL 6 OPTICAL 2 ZONE 2/ ZONE 3/ F.PRESENCE R.PRESENCE FRONT SURROUND SUR. BACK (REAR) SUBWOOFER CENTER R SURROUND L R L SURROUND BACK SPEAKERS R EXTRA SP2 L R.PRESENCE CENTER R FRONT L ANTENNA (4 RADIO) FM AM SINGLE AC IN R EXTRA SP1 L F.PRESENCE ZONE 2/ZONE 3/F.PRESENCE ZONE 2/ZONE 3/BI-AMP abcde f The unit (rear) a F.PRESENCE jacks (RX-A3070 only) Output front presence channel audio signals or Zone2 audio signals depending on the "Power Amp Assign" setting (p.142). b R.PRESENCE jacks (RX-A3070 only) Output rear presence channel audio signals or Zone3 audio signals depending on the "Power Amp Assign" setting (p.142). c FRONT jacks Output front channel sounds. d SURROUND jacks Output surround channel sounds. e SUR. BACK jacks Output surround back channel sounds. When using only one surround back speaker, connect the external amplifier to the SINGLE jack (L side). f CENTER jack Outputs center channel sounds. About external power amplifiers We recommend using power amplifiers that meet the following conditions. • With unbalanced inputs • With volume control bypass (or without volume control circuit) • Output power: 100 W or more (6 to 8 Ω) En 40