ONKYO tx-nr646 User Manual

1 

#

$

%

&

'

7

8

9

G

H

F

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Important: The power cord must be connected only after all other connections are 

completed.

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Front speakers

 

● To enjoy the Dolby Atmos listening 

mode, height speakers or back 

speakers need to be installed. There 

are a variety of height speakers apart 

from this type. see the next section 

for details.

 

● To use the multi-zone function, see 

.

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Center speaker

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Surround speakers

'

Subwoofer

7 8

Back speakers

9 F

Height speakers (Front High)

G H

Height speakers (Rear High)

 

● 5.1 ch: "#$%&'

 

● 7.1 ch:  "#$%&'+78 or 

"#$%&'

+9F or  

"#$%&'

+GH 

78

 speakers, 9F speakers and 

GH

 speakers share the same speaker 

terminals. Select either of the groups.

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 output front stereo sound and $ 

output center sound such as dialogs and 

vocals. %& create back sound field. ' 

reproduces bass sounds and creates rich 

sound field.

Connecting 78 speakers, 9F speakers 

or GH speakers enables playback in 7.1 

ch configuration. 78 (back) speakers 

improve sense of envelopment created by 

back sound field as well as seamlessness 

of back sounds, providing more natural 

sound experiences in the sound field. 
9F 

or GH (height) speakers produce 

surround effects 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".

a

b

f

e

c

d

a b

Top Front

c d

Top Middle

e f

Top Rear

Ceiling speakers, etc. are used for 

maximizing effects in Dolby Atmos or 

Dolby Surround listening mode. Install Top 

Front speakers so that they are positioned 

at a point between directly above the 

listening position and directly above the 

front speakers. Install Top Middle speakers 

so they are directly above the listening 

position. Install Top Rear speakers so 

they are positioned at a point between 

directly above the listening position and 

directly above the back speakers. You can 

select (a)(b), (c)(d) or (e)(f) on the 

unit. For connection with the unit, use the 

SPEAKERS BACK or HEIGHT terminals.

 

● Dolby Laboratories recommends 

placing the speakers as described in 

"Installing speakers in ceiling" to obtain 

the best Dolby Atmos effect.

g

i

h

j

g h

Dolby Enabled Speakers (Front)

i j

Dolby Enabled Speakers (Surround)

A Dolby Enabled Speaker is specially 

designed to be used as a height speaker. 

There are two types of Dolby Enabled 

Speakers; one type is designed to be 

placed on top of other speakers such as 

front speakers and surround speakers,