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Sunfire True Sub MK II Subwoofer - Page 3 Questions & Answers
My Sunfire subwoofer is 13
You need to open up the speaker cab., sounds like a wire is loose inside or a capacitor. Check right at the speaker connections for a problem.
Sunfire Subwoofer 110 Noise on input plugin
A few more questions-
Does the sub hum without anything plugged into it except for power? If it makes a real loud hum almost a squeal then I think the rca cable between the receiver and the sub is dead shorted and needs to be replaced. If it's more of a low level hum, then it's a ground hum caused by many things, ie........the receiver and the sub being on different power circuits in the house.......sometimes diconnecting the cable tv feed as it enters the room while the sub is connected and humming to see if it stops........the easy fix sometimes is using a 3 to 2 prong ac adapter but lifting the ground on such a powerful amp could be a fire hazard.
Sub doesnt do anything while plugged in ( Sunfire mk II)
Some subwoofers can sense the signal on their input and will only start when there's enough signal for long enough time for them to turn on the amp.
Try seting the "subwoofer signal out" on your reciever a bit higher, see if it does the trick, if not, try it with some other source (e.g. an mp3 or CD/DVD player) plugged directly into the subwoofer. If it still doesn't work, there's some other problem with your sub (bad connection inside sub, sub amplifier problems, maybe there's another fuse for the speaker itself, try to check it out).
If it works well with an alternate signal source, the problem might be either in reciever or the signal cable that you use, but could also be something else.
good luck
3rq8 (Triarcuate)
Humming sound in subwoofer after it's been playing for a while
It sounds like you are describing an earth loop problem. I won't go into detail in this post, but try an isolation test first. disconnect everything from the reciever except the sub and try connecting say a BATTERY powered mp3 player or cd player to minimise connections to the electrical mains earth. you could also isolate things by taking your sub to a friend's house and trying it on their system.
If it is an earth loop use a process of elimination to find out which two pieces of equipment causes the earth loop. then apply filtering.
you can buy earth loop isolation transformers for about AU$26 and I've used one on my sub myself. Theyhave RCA (phono)plugs on each end and they connect inline with the signal cable to the sub amp.
as for the thumping sound it might be the speaker protection circuitry cutting off the amp to protect the subwoofer speaker from damaged. This might be triggered if the earth loop sound is causing the sub amp to overload and clip.
Failing this there might be a dried out overheated electro capacitor in the amp circuit causing the hum. Hav a chat to your local electronics person, who should be able to spot it!
Hope this puts you on the right track
Happy Hunting!
Audiosonic CR-06PL not changing time when following manual instructions.
Set Time Hours and Minutes: Press Time/12/24 and Alarm1/ON/OFF buttons at the same time for two seconds and it will start to blink the hour.
Press and hold the button for a fast setting or tap it briefly to increase the setting by one hour. Now set the minutes with time (press and hold) and min.
How do I set the Audiosonic clock? Set current time Press and hold the time button and simultaneously press the hour to set the hours in 24-hour mode .
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