Integra DTR-10.5 User Manual

 

22

 

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.

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

 

*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 listen 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).

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 the same. A mixing studio used for 
making multichannel DVD-Audio source material adopts this placement.

*ITU-R: International Telecommunication Union Radiocommunication Sector