Sunfire 12 User Manual

Page of 24
User's Manual
21
Troubleshooting
The SunÞ re Subwoofer is expertly 
de signed and built to provide years of 
trou ble-free per for mance. Most problems 
that occur can usually be solved by 
checking your setup or making sure 
that the com po nents con nect ed to the 
am pli Þ  er are on and fully op er a tion al.
The following information will help you 
deal with common problems you may ex-
 pe ri ence during normal use. If a problem 
still persists, please contact your SunÞ re 
Dealer for assistance.
Not enough bass 
• 
Check that your preampliÞ er’s outputs 
are connected to the sub woof er’s line 
level inputs and not to the line level high 
pass outputs. If they are con nect ed to 
the outputs by mis take, the bass will be 
weak but the sub woof er will still func-
tion.
• 
If your preampliÞ er has a single 
sub woof er/LFE output jack, make sure 
it con nects to the subwoofer’s Left 
(Mono) input. If the bass is still not 
enough after check ing all the re main ing 
points, use a Y cable to connect the 
pream pli Þ  er’s single sub woof er/LFE 
output to the sub woof er’s right and left 
inputs.
• 
Make certain the subwoofer is in a 
corner location, Þ ring at 45 degrees 
into the walls formed by the corner. 
This is not ab so lute ly essential, but will 
maximize the bass output and give the 
smooth est possible re sponse. If you 
place the unit so one of the drivers is 
Þ ring into one of the walls, leave three 
inches of clear ance between the driver 
and the wall.
• Home 
Theater 
preampliÞ ers usually 
have a way of ad just ing the level of the 
sub woof er/LFE output, either using a 
remote control or with a small volume 
knob on the back panel. Make sure that 
this is ad just ed correctly.
• 
Check that your preampliÞ er or 
receiver’s sub output is turned on. Some 
systems only have a sub output signal 
when the front speakers are set to 
“small.”
• 
If the preampliÞ er’s subwoofer/LFE 
output has an ad just able crossover 
frequency, make sure that the SunÞ re 
sub woof er’s own crossover point is set 
higher or part of the bass range will be 
missing.
Not enough bass in a 5.1   
sys tem
• 
5.1 Home Theater preampliÞ ers usually 
have a bass management system which 
allows the bass to be redirected among 
your speakers. For example, the bass 
normally present in the front speak-
ers can be redirected to play in the 
subwoofer, or the sub woof er can play 
the bass from all the speakers, in addi-
tion to its dedicated LFE (low frequency 
effects) channel. Make sure that all of 
the bass man age ment options are cor-
rectly set. The preampliÞ er may have a 
way of turning the sub woof er output off 
entirely, so check that it is always on.
• 
Check that the preampliÞ er calibration 
procedure is correctly adjusted. Usually, 
the preamp will send a test tone through 
all the speakers in your system, allowing 
you to adjust (trim) the volume of each 
chan nel until they are all playing at the 
same level.
• 
If the bass is weak only when playing 
5.1 surround sources, check that your 
pream pli Þ  er is correctly set to decode 
the 5.1 sur round modes, such as Dolby 
Digital or DTS.
• 
DVD discs have a menu which allows 
you to select which soundtrack to play. 
Check that the correct 5.1 surround 
audio soundtrack is selected, otherwise 
it may just play stereo into your preamp 
and you won’t get the true LFE signal 
into the subwoofer.