HARMAN KARDON HK3370
Owner's Manual

Installation and Connections
System and Power Connections The HK 3370 is designed for flexible use with external control components and power amplifiers. These connections are easy to make during an initial installation, or at a later date should you choose to upgrade your system. Remote Control Extension If the receiver is placed behind a solid or smoked glass cabinet door, the obstruction may prevent the remote sensor from receiving commands. In this event, an optional remote sensor may be used. Connect the output of the remote sensor to the Remote IR In jack ¢. If other components are also prevented from receiving remote commands, only one sensor is needed. They may use this unit�s sensor or a remote eye by running a connection from the Remote IR Out jack � to the Remote In jack on Harman Kardon or other compatible equipment. External Audio Power Amplifier Connections If desired, an optional, external amplifier may be used in place of the HK 3370�s internal power amplifier. To connect an external power amplifier, first remove the Pre-Main Jumper Pins � that connect the Preamp Out � and Main In � jacks on the rear panel. Keep the jumpers in a safe place should they be needed at a later time. Using high-quality audio interconnect cables, connect the Preamp Out jacks � to the input jacks on your power amplifier. Make certain to match the right output to the right input and the left output to the left input. Note that when an external power amplifier is used, no special adjustments are required. All volume and other control adjustments are made using the standard front panel or remote controls.
A good starting point for speaker placement is to make the distance between the two speakers, and the distance between either speaker and the listener, identical.

AC Power Connections The Accessory Outlets · receive power as long as the receiver is turned on. Power to these outlets is removed when the unit is in the Standby mode, or when the Main Power Switch 1 is in the �OFF� position. Speaker Placement For optimal listening enjoyment, and for soundfield reproduction that best re-creates the original recording, it is good practice to place the speakers so that they form a triangle with the speakers at the front of the room, and the preferred listening spot at the third point of the triangle. The distance between each speaker and the listener should be identical. For example, if the speakers are 10 feet from one another, each of the speakers should optimally be placed so that they are also 10 feet from the listener. It is also desirable to place speakers so that their tweeters, or highfrequency drivers are aimed at ear height when you are seated in the listening position.
Left Front Speaker Right Front Speaker

To optimize the sound field, or to suit your listening room environment, you may find that some experimentation is required to find the correct location. Ideally, pans from left to right across the front of the room should sound smooth, and instruments should appear to be coming from the proper location to where they would be placed in an orchestra. The placement of subwoofers should be done as suggested in the manufacturer�s instructions. In general, subwoofers often produce best results when they are placed in the corner of a room, but optimal placement will vary widely depending on room size, the subwoofer type and the placement of rugs and furniture in a room. Finally, when all connections are complete, plug the power cord into a nonswitched 120-volt AC wall outlet. You�re ready to enjoy the HK 3370!

12 INSTALLATION AND CONNECTIONS