Sunfire TGR401 ユーザーズマニュアル

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User's Manual
38
CHAPTER 5
 The TGR-401 has a bass man-
 age ment system that allows you to 
choose wheth er your speakers will 
play the full fre quen cy range, or if 
the bass will be re di rect ed to the 
subwoofer.
The advantages of redirecting the 
bass to a subwoofer are : 
• 
The overall bass of the system 
is im proved as subwoofers, 
such as Sun re's powered 
True Subwoofers, are specially 
de signed for this frequency 
range. 
• 
The subwoofer can si mul ta -
neous ly play the bass from all 
of the speak ers, in addition to 
its own low frequency effects 
channel (LFE). 
• 
There is no loss in percep-
tion of the po si tion of movie or 
music sound effects, as the ear 
cannot easily locate the posi-
tion of bass sound sources.
• 
Smaller speakers can be used 
for front, center and sur-
rounds, as they do not have to 
re pro duce the low fre quen cy 
range. This leads to a saving 
in speaker ex pense and room 
space. Note that a sub woof er 
is required if the front speakers 
are not set to LARGE.
• 
The TGR-401 ampli ers do not 
waste power re pro ducing the 
low frequency range.
The SPEAKER SIZE menu is used 
to set the bass management correctly 
for your speaker system.
The speaker choices are:
OFF: The speakers are not present.
LARGE: the speakers receive the 
full frequency range, and their bass is 
not redirected to the subwoofer.
40, 45, 50...150 Hz: The bass 
below this frequency is redirected to 
the subwoofer. Check your speaker 
manuals to  nd their frequency re-
sponse, and choose a frequency that 
is above the lowest, or choose 90 Hz 
as a good starting point.
NOTE: Dolby Digital and DTS 
modes are designed especially for 
complete systems with front, cen-
ter, and surround speakers and 
subwoofers. You need all of the 
speak ers to get the best per for mance 
from your Home Theater. If you do not 
have a subwoofer connected and you 
are using large speakers, then you 
should not use the bass management 
system (so set all the speakers to 
Large). Without a subwoofer, you will 
be missing the 5.1 LFE (low frequency 
effects) information.
Considering the advantages of 
the bass management system, you 
might try setting all of your speakers 
to 90 Hz (for example), even if they 
are capable of good low-frequency 
performance.
Video Conversion
The TGR-401 has advanced digital 
video DSP circuitry and coding which 
allows the following:
• 
Up conversion from composite 
video inputs to S-video and 
component video outputs.
• 
Up conversion from S-video 
inputs to component video 
outputs.
• 
Down conversion from S-video 
inputs to the MON composite 
video output jack.
The video conversion makes the 
TGR-401 able to switch all of your 
video sources, making it the central 
controller for all of your audio and 
video entertainment. 
For example, suppose you have 
your TV connected to the component 
video outputs of the TGR-401. Any of 
your other video sources can be con-
nected to the TGR-401, even those 
which do not have component video. 
The TGR-401 will convert any com-
posite and S-video sources to compo-
nent video.
Notes:
• 
Do not connect both compos-
ite and S-video inputs on the 
same TGR-401 input. Always 
connect the highest quality 
video source type.
• 
The quality of the converted 
output is limited by the quality 
of the original source.
• 
The TGR-401 has sophisticat-
ed video circuitry that requires 
it to be pre-con gured for only 
one type of television broad-
cast standard. For US models, 
this is NTSC and for export 
models, this is PAL-BGIH.
• 
There is no video conversion 
for Zone 2, so you must be 
playing a composite video 
source to see it in Zone 2.
Bass Management
SPEAKER SIZE
CHOICES
FRONT
90HZ
LARGE,40,45,50,55,60,65,...150
CENTER
90HZ
OFF, LARGE,40,45,50,55,60,65,...150
SURROUND
90HZ
OFF, LARGE,40,45,50,55,60,65,...150
BACK SURR
90HZ
OFF, LARGE,40,45,50,55,60,65,...150
NUM BACK 
SPKRS
2
N/A,1,2
SUBWOOFER
90HZ
OFF, 40,45,50,55,60,65,...150
SUBWOOFER 
MODE
NORM
NORMAL, ENHANCED