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Step 1:

   Connections

En-7

Instructions on how to connect speakers

Cut and remove the plastic coating from the end of the 

speaker cable, twist the core and connect it to the terminal. 

Be sure to make correct connection between the unit's 

jacks and speaker's jacks (+ to + and - to -) for each 

channel. If connection is wrong, a bass sound may become 

poor due to reverse phase. Up to two subwoofers with 

built-in power amplifier can be connected to the subwoofer 

jacks. Set the cut-off filter selection switch of the subwoofer 

to DIRECT. If the subwoofer does not have a cut-off filter 

selection switch but has a cut-off frequency adjusting dial, 

turn it to the maximum frequency. If your subwoofer does 

not have built-in power amplifier, you can connect a power 

amplifier between the unit and the subwoofer.

 

The speaker setting is 7.1 channels at the time of 

purchase. You can change it manually or by using 

automatic speaker setting.

 

Short-circuiting the + cable and - cable or contacting 

the cable core to the rear panel of the unit may cause 

failure. Also do not connect two or more cables to one 

speaker terminal or one speaker to several terminals.

When using commercially available banana plugs

tighten the speaker terminals to the end and then insert 

the banana plugs. Do not insert the core of speaker cable 

directly into the hole for banana plug of speaker terminal. 

(North American models)

TX-NR646_BAS_En_SN29401979_20150226.indd   7

2015/02/26   14:59:55

Summary of Contents for TX-NR646

Page 1: ...instructions for frequently used operations The Advanced Manual is published on the web for ecological reasons and has more detailed information and advanced settings http www onkyo com manual txnr646...

Page 2: ...s USB storage playback Supports variety of network functions such as Internet Radio DLNA AirPlay etc Supports Wi Fi and Bluetooth Equipped with a PHONO jack enabling connection with a turntable Bi Amp...

Page 3: ...R button Move the cursor and confirms the selection When listening to AM FM broadcasting tune in to the station with lTUNINGj or select the registered station with dPRESETc K RETURN button Returns the...

Page 4: ...eparate room K PRE OUT SUBWOOFER jack A subwoofer with built in amplifier is connected 1 4 6 23 7 5 9 8 Display 1 Lights in the following conditions Z2 Zone 2 output is on HDMI HDMI signals are input...

Page 5: ...ects on a height plane This unit can perform optimal sound field processing for the type of height speakers actually installed and registered in Initial Setup Height speaker types Installing speakers...

Page 6: ...dle 6 Top Rear 7 Dolby Enabled Speaker Front 8 Dolby Enabled Speaker Surround Connection pattern F r o n t C e n t e r S u r r o u n d Back or Height Required Optional Connection of a subwoofer is opt...

Page 7: ...usting dial turn it to the maximum frequency If your subwoofer does not have built in power amplifier you can connect a power amplifier between the unit and the subwoofer The speaker setting is 7 1 ch...

Page 8: ...tor buttons For how to make settings see the Advanced Manual To connect the TV and the unit connect the HDMI OUT MAIN jack of the unit and the HDMI IN jack of the TV using a HDMI cable With this conne...

Page 9: ...ple when video input connection is to the 2 BD DVD jack the audio input connection should also be to the 4 BD DVD jacks It is possible to change assignment of the input jacks and input selector button...

Page 10: ...t See 4 Network Connection of Step 2 Initial Setup for Wi Fi settings Internet radio Router NAS Headphones connection Connect stereo headphones with a standard plug 1 4 inch or 6 3 mm to the PHONES ja...

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