Sunfire HRS-12 User Manual

User's Manual

17

Troubleshooting

This subwoofer has been designed 

and built to provide years of trouble-free 

performance. Most problems that occur 

can usually be solved by checking your 

setup, or by making sure that the compo-

nents connected to the amplifier are on 

and fully operational.

The following information will help you 

deal with common problems you may ex-

perience during normal use. If a problem 

persists, please contact your Dealer for 

assistance.

Not enough bass 

•  Check that your processor’s outputs are 

connected to the subwoofer’s line-level 

inputs and not to the line-level high 

pass outputs. If they are connected to 

the outputs by mistake, the bass will be 

weak but the subwoofer will still func-

tion.

•  If your processor has a single sub-

woofer/LFE output jack, make sure it 

connects to the subwoofer’s Left input. 

If the bass is still not enough after 

checking all the remaining points, use 

a Y cable to connect the processor’s 

single subwoofer/LFE output to the 

subwoofer’s left and right inputs.

•  Try moving the subwoofer to a different 

location. See Location on page 10. 

Placing it in a corner will maximize the 

bass output and give the smoothest 

possible response.

•  Home Theater processors usually 

have a way of adjusting the level of the 

subwoofer/LFE output, either using a 

remote control or with a small volume 

knob on the back panel. Make sure that 

this is adjusted correctly.

•  Check that your processor 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 processor’s Sub/LFE output has 

an adjustable crossover frequency, 

make sure that the subwoofer’s own 

crossover point is set to Bypass or part 

of the bass range may be missing.

Not enough bass in a 5.1 

system

•  5.1 Home Theater processors 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 subwoofer 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 management options are cor-

rectly set. The processor may have a 

way of turning the subwoofer output off 

entirely, so check that it is always on.

•  Check that the processor 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 

channel until they are all playing at the 

same level.

•  If the bass is weak only when playing 

5.1 surround sources, check that your 

processor is correctly set to decode the 

5.1 surround modes, such as Dolby 

Digital or DTS.

•  Some 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.