Onkyo TX-NR818 En-63, Digital Processing Crossover Network, Output Band for Test, Overlap

THX Loudness Plus

THX Loudness Plus is a new volume control technology featured in THX Ultra2 Plus™ and THX Select2 Plus™ Certified receivers. With THX Loudness Plus, home theater audiences can now experience the rich details in a surround mix at any volume level. A consequence of turning the volume below Reference Level is that certain sound elements can be lost or perceived differently by the listener. THX Loudness Plus compensates for the tonal and spatial shifts that occur when the volume is reduced by intelligently adjusting ambient surround channel levels and frequency response. This enables users experience the true impact of soundtracks regardless of the volume setting. THX Loudness Plus is automatically applied when listening in any THX listening mode. The new THX Cinema, THX Music, and THX Games modes are tailored to apply the proper THX Loudness Plus settings for each type of content.

Digital Processing Crossover Network

Digital Crossover provides a separate routing system by splitting the audio signal into separate frequency bands optimized for each speaker driver. It provides a fine, three- dimensional sound field that extend each driver’s performance to the uppermost. With its built-in time alignment function, this system also adjusts the sound shifting that occurs when there is a physical offset between sound drivers. At a digital processing level, it corrects this offset by delaying the related audio signal.

Although this function is meant for speakers without crossover network, it can also be used with bi-amped speakers.

In this case, set the crossover network on the AV receiver as the speakers’ built-in network frequency is not used.

Tip

•This setting can be done while listening to an audio source.

•Press MODE/D (Blue) to switch from the current audio source to test noises. Pressing MODE/D (Blue) again or the cursor buttons

will stop the test noises and switch back to the original audio source.

Note

•This setting can only be made when “Speakers Type (Front)” is set to “Digital Crossover” (➔ page 59).

■Crossover

`“250Hz”, “320Hz”, “400Hz”, “500Hz, “630Hz”, “800Hz”, “1000Hz”, “1250Hz”, “1600Hz”, “2000Hz”, “2500Hz”, “3200Hz”, “4000Hz”, “5000Hz”

Output Band for Test

`High + Low, High, Low:

Select the output for the audio signal.

Tip

•Pressing MODE/D (Blue) button plays band-limited test noises which center on the specified frequency.

•We recommend choosing a crossover value that creates no volume difference between “High” and “Low”.

Note

•Refer to your speaker manual when setting without the use of test noises.

Cutoff frequencies of the woofers’ low-pass filter (LPF) and the tweeters’ high-pass filter (HPF) are set according to the frequency specified for “Crossover”.

■Overlap

`No

`Yes

With this setting, a frequency band near the specified crossover frequency is output by both tweeters and woofers. Based on the frequency selected for “Crossover”, the cutoff frequency of the low-pass filter (LPF) will be set to 1/3 octave up and that of the high-pass filter (HPF) to 1/3 octave down. Example: With a “Crossover” of “3200Hz”, the cutoff frequency of the woofers’ LPF will be “4000Hz”, and the tweeters’ HPF will be “2500Hz”.

En-63

Advanced Operations

Tip

•Sounds processed by Digital Processing Crossover Network are played.

•You can switch from the current audio source to test noises by pressing MODE/D (Blue).

■High Level, Low Level

`–6.0dBto 0.0dB to +6.0dB in 0.5 dB steps

With this setting, you can set the volume of tweeters and woofers.

Tip

•Sounds processed by Digital Processing Crossover Network are played.

•You can switch from the current audio source to test noises by pressing MODE/D (Blue).

■High Phase, Low Phase

`0º

`180º:

With this setting, you can adjust the phase of tweeters and woofers.

Tip

•Sounds processed by Digital Processing Crossover Network are played.

•You can switch from the current audio source to test noises by pressing MODE/D (Blue).