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Sunfire Theater Grand III 9.1-Channel Amplifier Questions & Answers
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!
How do I change to degree mode on my porpo YH-2000
- Power Off: Turn off the device.
- Jumper Configuration: Locate the jumper labeled "S16" on the device. Initially, it should be connected to pins 2 and 3.
- Power On (Alarm+All LEDs Flashing): Turn the device back on. You'll see the alarm LED and all other LEDs flashing.
- Power Off Again: Turn off the device once more.
- Jumper Adjustment: Change the jumper configuration from pins 2 and 3 to pins 1 and 2.
- Finished: Your Porpo YH-2000 is now set to the desired angular unit mode.
If you encounter any issues, you can press the reset switch on the back of the device to reinitialize it.
Openfit Shokz battery replacement?
Question edited for clarity, typo and CAPS.
Question moved from Cars and Trucks category.
Claim on the warranty irrespective of how long you have had them. They charge $180 but they cost them $20 to buy from China. Package them up and send them tracked and ask them to replace the batteries.
How long is the warranty on AfterShokz?
While we hope you never need it, all new Shokz purchased from authorized retailers come with a two-year warranty that begins on your date of purchase.
Jan 11, 2019
https://www.google.com/search?q=Openfit+Shokz+battery+replacement
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My roadking rk4000 wont charge. I turn it off to charge it but there is no indicator light at all, any suggestions?
Are you using the charging cables that came with it? That is a type C. Are you securely attaching the charging cable? A loose connection would keep the battery from charging. If you had a low battery, you would see a red light. That you have no light at all suggests there is no charge left in the battery. I'm not sure the reset will work with no charge which is why you ought to check the cables first.
But turn it off and then hold down the Multifunction button for 10 seconds to reset it. Then turn it back on and see what happens. If you can, test the charging cable on aother device. If you have another type C charging cable, try it, just to eliminate a bad cable. If these suggestions don't work, you may try the manufacturer's customer support.
Can f2100 remote work on my dishtv box?
The F2100 remote is not explicitly listed as compatible with the AerialBox T2100, I recommend using the remote that came with your AerialBox T2100 for optimal functionality. If you have any specific compatibility concerns, I suggest reaching out to Dish TV customer support for further assistance.
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