Onkyo TX-NR1000 Speaker Placement Suitable for THX Audio, Subwoofer, Corner Room length

Speaker Placement—Continued

Subwoofer

Using a subwoofer greatly improves the volume level and sound quality of bass sounds. The subwoofer effect depends not only on the listening position but also on the shape of the listening room.

•In general, place the subwoofer in a corner of the room or at a point 1/3 the width of the room.

•Play a movie or music that contains high quality bass sounds to determine the subwoofer placement. Change the subwoofer’s position and check the effect, then select the position where the bass sounds are best heard.

•You can place two subwoofers for more powerful and richer heavy bass sounds.

Corner

1/3 room length

Speaker Placement Suitable for THX Audio

To enjoy sources using the THX Cinema or THX Surround EX technology, we recommend using a THX speaker system from

Layout with dipole speakers

THX Ltd. A speaker system supporting the THX Ultra2 standard is best suited for THX Ultra2 Cinema or THX Music Mode.

The layout example on the right represents a case using the dipole speakers. A dipole speaker is a two-way directivity speaker that outputs the same sound in two directions such as forward and backward.

Most dipole speakers are marked with an arrow indicating how they should be oriented in the room in order to match their phases*. Dipole surround speakers should be placed so that their arrows point forward toward the screen, and dipole surround back speakers should be placed so that their arrows point toward each other.

	1	2
3	4	5
6		7
	10
	8	9

1TV or screen

2Subwoofer

3Front left speaker

4Center speaker

5Front right speaker

6Surround left speaker

7Surround right

speaker

8Surround back left speaker

9Surround back right speaker

10Listening position

*Phase: The word represents the waveform position in one cycle (0 to 360 degrees) of a sine wave. If the phase does not match between multiple waveforms due to the distance between multiple speakers, the speaker orientation, or the miswiring of positive and negative poles, the sound image or space may be obscured or the sound may be less easy to listened to.

When playing the source in the THX Ultra2 Cinema or THX Music Mode format using two surround back speakers supporting the THX Ultra2 standard, place them as close together as possible. After placing the surround back speakers, perform the settings described in the “THX Audio Setup” (page 91).

6

7

10

As close as possible

8

9

Speaker Placement Suitable for a Music Source such as DVD-Audio

This placement is based on the ITU-R* recommendation. In this placement, five speakers with the same performance capabilities are used for front left and right, center, and left and right surround speakers, and they are placed so that the distances between every speaker and the listening position are equal to each other and the heights of the speaker and the listener’s ears are in the same. A mixing studio used for making multichannel DVD-Audio source material adopts this placement.

*ITU-R: International Telecommunication Union Radiocommunication Sector

	Center
Front	Front
Left	Right
	60
	Sub-
	woofer
SL	SR

20