System Installation
After unpacking the unit and placing it on a solid surface capable of supporting its weight, you will need to make the connections to your audio and video equipment. These steps need to be done only when the receiver is first installed or when a change is made to the input source equipment.
Audio Equipment Connections
We recommend that you use high-quality inter- connect cables when making connections to source equipment and recorders to preserve the quality of the signals.
When making connections to audio source equipment or speakers it is always a good prac- tice to unplug the unit from the AC wall outlet. This prevents any possibility of accidentally sending audio or transient signals to the speak- ers that may damage them.
1.Connect the analog output of a CD player to the CD inputs ¶.
NOTE: When the CD player has both fixed and variable audio outputs, it is best to use the fixed output unless you find that the input to the receiver is so low that the sound is noisy, or so high that the signal is distorted.
2.Connect the Play/Out jacks of a cassette deck, CDR, MD or other audio recorder to the Tape Monitor In jacks ª. Connect the Record/In jacks on the recorder to the Tape Monitor Out jacks ‚ on the HK 3470. When the tape deck connected to these jacks is a three-head unit or has off-head playback, it will be possible to monitor the output of the source being recorded.
3.Connect the output of a second audio recorder, CDR, VCR or other line-level audio device to the Tape 2 Play/In jacks ⁄. If a recorder is used, connect its Rec/In jacks to the matching Tape 2 Record outputs ¤.
4.The output of any electronics product with a line-level output, such as a TV set, satellite receiver or DVD, may be connected to the Aux jacks •.
5.Connect the outputs of a turntable with a moving magnet cartridge to the Phono inputs §. To insure that the phono playback is noise- free, connect the ground wire from the tone- arm to the Phono Ground terminal £.
6.Assemble the AM Loop Antenna supplied with the unit as shown below. Connect it to the AM screw terminals ¡.
7.Connect an FM antenna to the FM Antenna connection ™. The FM antenna may be an external roof antenna, an inside powered or wire lead antenna or a connection from a cable TV system. Note that if the antenna or connec- tion uses 300-ohm twin-lead cable, you must use the 300-ohm-to-75-ohm adapter supplied with the unit to make the connection.
Speaker and Output Connections
To ensure that all the audio signals are carried to your speakers without loss of clarity or reso- lution, we suggest that you use high-quality speaker cable. Many brands of cable are avail- able, and the choice of cable may be influenced by the distance between your speakers and the receiver, the type of speakers you use, personal preferences and other factors. Your dealer or installer is a valuable resource for help in selecting the proper cable.
Regardless of the brand of cable selected, we recommend that you use a cable constructed of fine, multistrand copper with a gauge of AWG14 or smaller. Remember that in specifying cable, the lower the number, the thicker the cable.
Cable with a gauge of 16 may be used for short runs of less than ten feet. We do not rec- ommend that you use cables with an AWG equivalent of 18 or higher due to the power loss and degradation in performance that will occur.
Cables that are run inside walls should have the appropriate markings to indicate listing with UL, CSA or other appropriate testing agency standards. Questions about running cables inside walls should be referred to your installer or a licensed electrical contractor who is familiar with the NEC and/or the applicable local building codes in your area.
When connecting wires to the speakers, be certain to observe proper polarity. Remember to connect the “negative” or “black” wire to the same terminal on the receiver and the speaker. Similarly, the “posi- tive” or “red” wire should be connected to the like terminals on the HK 3470 and speaker.
We also recommend that the length of cable used to connect speaker pairs be identical. For example, use the same length piece of cable to connect the Speaker 1 left and right or Speaker 2 left and right speakers, even if the speakers are a different distance from the HK 3470.
NOTE: While most speaker manufacturers adhere to an industry convention of using black terminals for negative and red ones for positive, some manufacturers may vary from this config- uration. To assure proper phase, and optimal performance, consult the identification plate on your speaker, or the speaker’s manual to verify polarity. If you do not know the polarity of your speaker, ask your dealer for advice before pro- ceeding, or consult the speaker’s manufacturer.
Connect the speakers using the following steps:
1.Connect the main speakers to the Speaker 1 terminals ‡.
2.Connect a second set of speakers, or speakers that are in a second room location, to the Speaker 2 terminals °.
3.When an optional, powered subwoofer is
used, connect the outputs of the left and right Subwoofer Out jacks fl to the line-level inputs of the subwoofer. When the subwoofer’s amplifier has stereo inputs, run interconnects from both jacks. When the subwoofer has a mono input only, use the bottom output jack for the connection. If the subwoofer has only speaker-level inputs and outputs, connect the Speaker 1 terminals ‡ to the speaker-level inputs on the subwoofer, and then connect the speaker-level outputs on the subwoofer to your main left and right speakers, following the instructions provided with the subwoofer. When a passive subwoofer is used, these connections will be made to the optional amplifier that powers the subwoofer.
