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Some surround modes switch speakers on or off as required. It's possible that the inputs you are using have settings that remember your previous settings, ie: no sub and surround speakers. Check the inputs and also make certain that whatever is connected to them is putting out Dolby signals.
Alright i had a chance to look over things, this is how you are going to hook up the sub. first we'll be connecting the surround sound unit to the sub woofer. surround sound unit sub woofer left front: positive (+) <-----to------------->(+) left speaker level in negative ( - )<- - -to- - - - - - ->( - ) left speaker level in
right front: positive (+) <-----to------------->(+) right speaker level in
negative ( - )<- - -to- - - - - - >( - ) right speaker level in
now that the surround sound unit is connected to the sub woofer you will need to connect the front surround sound speakers to the sub woofer. sub woofer front surround sound speaker left speaker level out (+)<-----to--------> (+) left front speaker left speaker level out( - ) <- - - to- - - - ->( - ) left front speaker
right speaker level out (+)<-----to--------> (+) right front speaker right speaker level out( - ) <- - - to- - - ->( - ) right front speaker
Alright now that the wires are all over the place and plugged in turn everything on and see how it sounds. let me know if everything is working as it should. if you need help with anything else or if something does not seem right please feel free to contact me via e-mail or phone Mark Woodring
The best thing to do is to contact the manufacturers. From this i understood that your speaker system is new. You surely have the manufacturer's guarantee. So its better to contact them than to get it repaired or replaced for free. Sir please do not try to open the sub as it will void the guarantee policy.
Hope your subs come into play as soon as possible....... All the best...
The hum can be from the power supply not properly filtering, and or the output stage also has a short.
There is the chance that the speaker driver coil is now burned, or the power supply is now dead. If ther output stage is shorted and was putting DC on to the speaker cone, this will burn it very easily.
You should sent the unit out and have it serviced, unless you are properly trained, have the service and engineering manuals, and the test equipment to follow up on a proper repair and calibration.