Harman-Kardon AVR 645 Digital Audio Outputs: Connect these, AC Power Cord Jack: Connect the AC

Rear Panel Connections

8-Channel Direct Inputs: These jacks are used for connection to source devices such as DVD-Audio or SACD players with discrete analog outputs. Depending on the source device in use, all eight jacks may be used, though in many cases only connections to the front left/right, center, surround left/right and LFE (subwoofer input) jacks will be used for standard 5.1 audio signals.

Digital Audio Outputs: Connect these

jacks to the matching digital input connector on

adigital recorder such as a CD-R or MiniDisc recorder.

Video Monitor Outputs: Connect this jack to the composite and/or S-Video input of a TV monitor or video projector to view the on-screen menus and the output of any standard Video or S-Video source selected by the receiver’s video switcher.

DVD Video Inputs: Connect these jacks to the composite or S-Video output jacks on a DVD player or other video source.

Front Speaker Outputs: Connect these outputs to the matching + or – terminals on your left and right speakers. In conformance with the new CEA color code specification, the White ter- minal is the positive, or "+" terminal that should be connected to the red (+) terminal on Front Left speaker with the older color coding, while the Red terminal is the positive, or "+" terminal that should be connected to the red (+) terminal on Front Right speaker. Connect the black (–) ter- minals on the AVR to the black (–) terminals on the speakers. See page 16 for more information on speaker polarity.

Center Speaker Outputs: Connect these outputs to the matching + and – terminals on your center channel speaker. In conformance with the new CEA color code specification, the Green Terminal is the positive, or "+" terminal that should be connected to the red (+) terminal on speakers with the older color coding. Connect the black (–) terminal on the AVR to the black negative (–) terminal on your speaker. (See page 16 for more information on speaker polarity.)

Surround Speaker Outputs: Connect these outputs to the matching + and – terminals on your surround channel speakers. In confor- mance with the new CEA color code specifica- tion, the Blue terminal is the positive, or "+" ter- minal that should be connected to the red (+) terminal on the Surround Left speaker with older color coding, while the Gray terminal should be connected to the red (+) terminal on the Surround Right speaker with the older color cod- ing. Connect the black (–) terminal on the AVR to the matching black negative (–) terminals for each surround speaker. (See page 16 for more information on speaker polarity.)

Switched AC Accessory Outlet: This outlet may be used to power any device that you wish to have turn on when the AVR is turned on with the System Power Control switch 2.

USB Connector: Connect a cable with a USB “Mini B” connector to the AVR and the other end to a compatible computer running Windows® 2000, Windows® XP or higher with the latest service packs installed, to use this port to listen to audio from the computer through the AVR 645. This connection is also used to connect a compatible computer to the AVR for firmware upgrades, when available. See page 43 for more information on playback of computer audio with the AVR. Instructions for upgrades will accompa- ny the upgrade file download package.

AC Power Cord Jack: Connect the AC

power cord to this jack when the installation is complete. To ensure safe operation, use only the power cord supplied with the unit. If a replace- ment is required it must be of the same type and capacity.

Component Video 2 Inputs: These inputs may be used with any video source device equipped with analog Y/Pr/Pb or RGB component video outputs. The factory default is for these jacks to be a linked to the Video 2 input, but you may change the setting at any time through the IN/OUT SETUP menu. See page 16 for more information on configuring the component video inputs.

Monitor Component Video Outputs:

Connect these outputs to the component video inputs of a video projector or monitor. When a source connected to one of the two

Component Video Inputs	is selected the
signal will be sent to these jacks.

Component Video 1 Inputs: These inputs may be used with any source device equipped with analog Y/Pr/Pb or RGB component video outputs. The factory default is for these jacks to be a linked to the Video 1 input, but you may change the setting at any time through the IN/OUT SETUP menu. See page 16 for more information on configuring the component video inputs.

Note: All component inputs/outputs can be used for RGB signals too, in the same way as described for the Y/Pr/Pb signals, then connected to the jacks with the corresponding color.

RGB connection is not possible if the source out- puts a separate sync signal (see page 17).

Remote IR Output: This connection permits the IR sensor in the receiver to serve other remote controlled devices. Connect this jack to the “IR IN” jack on Harman Kardon or other compatible equipment.

Remote IR Input: If the AVR’s front-panel IR sensor is blocked due to cabinet doors or other obstructions, an external IR sensor may be used. Connect the output of the sensor to this jack.

Multiroom IR Input: Connect the output of an IR sensor in a remote room to this jack to operate the AVR’s multiroom control system.

Video 1 Video Outputs: Connect these jacks to the RECORD/INPUT composite or S-Video jack on a VCR.

Video 1 Video Inputs: Connect these jacks to the PLAY/OUT composite or S-Video jacks on a VCR or other video source.

HDMI Output: Connect this jack to the HDMI input on a compatible HDMI-equipped video display.

Video 3 Video Inputs: Connect these jacks to the PLAY/OUT composite or S-Video jacks on any video source.

Video 2 Video Inputs: Connect these jacks to the PLAY/OUT composite or S-Video jacks on a second VCR or other video source.

Optical Digital Inputs: Connect the optical digital output from a DVD player, HDTV receiver, LD player, MD player or CD player to these jacks. The signal may be either a Dolby Digital signal, a DTS signal, a 2 channel MPEG 1 signal, an HDCD data stream or a standard PCM digital source.

8REAR PANEL CONNECTIONS