bk reference 31 User Manual

 

52

  

 
With the wide variety of audio source material available today, i.e. single channel mono, 2 channel mono, 2 
channel stereo, 2 channel surround and multi-channel encoded audio, we believe that the reproduction of this 
material is best handled in audio categories. We have decided to define five “audio modes” which are actually 
different Plug and Play modes of operating our audio processor. MONO is best used for listening to the FM tuner 
with weak RF signal strengths. It is also useful in the case of a large listening group when it is difficult to put 
everyone near the optimum listening position. STEREO is best used for a purist (STEREO 2) listening or for 
expanding the stereo image to additional speakers. SURROUND and THX are best used for most home theater 
applications where the intent is to allow a surround decoder to determine automatically the routing and image of 
the audio information. DVD AUDIO is intended for use with an analog 5.1 channel source component. 
 
Why do I need all these surround decoders?

  

 
For use with the SURROUND or THX audio modes, surround decoders types allow another dimension in how the 
audio image is reproduced in a home theater. In general, many people will be happy simply leaving their 
processor in the SURROUND or THX audio mode at all times. Only Dolby Surround encoded 2-channel material 
has true surround speaker information encoded into the audio material. For use with this audio material, a 
standard Dolby Pro Logic surround decoder might suffice. However, for use with audio information from a 2 
channel stereo source or even 2 channel surround encoded information in a home theater environment, an option 
for different surround decoders allows for an optimized reproduction of the material from a movie or music 
perspective. 
 
Why do I need all these speaker selections?

  

 
In general, many people will be happy simply leaving their processor in the default SURROUND or THX audio 
mode for use with seven speakers. However, occasionally it maybe desired to select the MONO or STEREO 
“audio mode” for use with 2, 4 side, 4 back, 5 side or 5 back speakers because it may sound more natural with 
the current music or movie content. 
 
Selecting Audio Mode, THX 7 

 

 

From Remote 

From Front Panel 

Action 

1 

B&K 

 

make sure remote is in B&K mode 

2 

THX 

(MODE) 

step to desired mode 

3 

7 

(UP) or (DOWN)  

step to desired speakers 

 
Selecting Audio Mode, Stereo 4B 

 
 

 

From Remote 

From Front Panel 

Action 

1 

B&K 

 

make sure remote is in B&K mode 

2 

ST 

(MODE) 

step to desired mode 

3 

4 

 

Step to desired speakers 

4 

4 (again) 

(UP) or (DOWN) 

select 4B speakers (F, R, Sbl, Sbr) 

 
 
 
 
 
 

D V D     T H X   P L 2   7

 

D V D     P L 2   M O V   4 B