I bought these speakers two days ago.
I tried in several places and with different audio sources but the problem persists.
A local station of radio interferes (93,9 MHz).
A hum noise is heard.
The problem is only listened to in subwoofer.
The problem intensifies when separating the speakers from the subwoofer.
With a low volume, approximately 10%, the noise and the interference are quite annoying.
These problems are normal in this model?
Sorry for my bad english :)
You have to open the sub and move the transformer far away from the audio circuit. Seal the holes left by the screws. It will solve the hum problem. I'm not sure about the radio station interference, I used to have that same problem before only when the speakers where connected to my laptop and between 7:30pm and 8:30 pm (pretty weird). Now it doesn't happen anymore (long before I fixed the hum problem). Good luck.
When I moved to a new house I had the same problem. My dell computer speakers had been working for a couple days. Then one day were we had a party my cousin Aryana was playing with one of my babies I had. So the next day I turned on my computer and volume up when i logged in my volume wasn't working , so I ran down stairs and told my mommy and she said I was missing some black cord that llooked like the yellow cord that are suppost to be plugged in. So my mom's friend Ben came over so I couuld go on the internet and I mentioned I had no volume. He said I was missing the black cord too, but then when I went outside to tell my parents that. Then I came back up stairs and the black cord was rapped around my baby doll my cousin was playing with.So the reason why you might not have volume is your black or yellow or one or the other or both might not be plugged in. Or if you don't even have speakers you can use some ear phone plug in things that you use for cd players. Hopefully I helped your problem.
There is nothing you can do about it, your sub probley has a built in amplifier right? the only thing you can do is live with it, like most things they normally have a little fcc sticker that states "this device must accept any interference received, including interference that cause undesired operation".
You may be now living too close to a radio station. Sometimes when this is the situation, anything electronic gear plugged into a wall socket can act like an antenna, thus receiving signals from local radio stations.
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In my experience the JVC brand hasn't maintained it's early promise of quality and I avoid the brand these days.
It would have been helpful if you described the noise and mentioned whether it was constant on both FM and AM. Excessive noise isn't unusual on AM due to the inability of the basic circuitry to reject the various sources of interference found in the average home, partly because the AM ferrite rod antenna is usually inside the radio. The average AM radio is highly receptive to receiving and amplifying lots of interference from many sources especially that radiated by fluorescent lighting, cfl bulbs and even nearby mains wiring resulting in a loud hum or buzz.
With the high popularity of FM and the introduction of DAB that has increasing popularity, the development of AM receivers ceased several decades ago.
FM is immune from that type of interference but is by no means able to reject all interference and a powerful signal from an external antenna produces the best result, the best signal to noise ratio.
Assuming the radio isn't faulty, the problem is most likely interference. If the power cord has a ground conductor it is very important it is connected to a good electrically quiet ground. If this isn't possible it could improve things to use an independent ground to the outer conductor of the coax cable to the FM antenna.
No solution i'm afraid. But i have the exact same problem. Terrible cracking interference. Unplug everything else in the house and they still crackle. Very annoying.
Decided to buy a new woofer on ebay as that seemed to be the problem with possible faulty switch, but the new woofer has a different connection for the volume control. Incredibly frustrating.
If you have any luck let me know.
Bose want eighty quid to repair...
The sources of this RF are often electric fuel pumps, alternators and relays particularly the ones for the headlights.
Results very but this usually requires a capacitor placed on a the individual components to make a noticeable difference. Some auto parts stores sell them as rf filters. Audio shops in-line sell devices know as noise filter and ground loop eliminators. Ground loops created by improperly designed or improperly installed equipment are a major cause of noise and interference in audio systems. What i have describe above is as if it is on you dc powers source line your problem could be just a bad or poorly shield coaxial cable. You should chose a 95% shielded. Oh an radioshack is not a good source for coax or antenna quality. Try a local truckstop.
Aren't intermittent problems fun? You don't mention the model.
I'm sure it's not the speakers or the CD players. You don't mention if the failing sources have been all digital, analog or a mix. If you pause the source or Mute the sound, is there anything 'dirty' still audible? Yes? Crappy cable shielding, loose cable seating, interference from power sources, dimmer-controlled lighting, etc.
If you have a tape deck try recording whatever you're listening to full-time on it until you capture the 'event'. Then play the tape back and determine if the bad audio was present BEFORE the amplifier channels.
this is from Harman support site
First you need to determine where the problem is. Try connecting your speakers
to another audio source such as a portable CD player. If you receive the proper
sonic results, this will tell you that the problem is in the computer and/or
soundcard setup. In this case there are many things to try. 1. Interference may
be causing the distortion. Please check all surrounding electrical objects and
place the speakers away from the problem object. 2. Ensure that the speaker
input jack is pushed all the way into the appropriate jack. Check all the
connections and secure them. 3. The volume on your soundcard may be set too
high. Decrease the volume in your volume control panel. Also check the volume
and tone controls on the speaker. 4. Sound card or audio source material may
cause a problem. *note* the quality of the audio source is also a factor (i.e.
bad recording). The compatibility of your CD/DVD rom drive, soundcard and
software will contribute to the quality of your sound.
There is probably a source of interference near the radio. Move the radio into another room and tune 96.1 again. If the interference is still present, try again - further away still. You should be able to find a place in your home that the interference is not present. If you are unable to find such a location, try another radio tuned to the same frequency and repeat the steps above. If the interference is present on the new radio - there is an electrical device nearby (not the radio) that is causing the noise.
You could try a battery operated radio (not plugged into the outlet) to determine if the noise is coming into the radio via antenna - or by the power cord. If the noise is gone, the problem is on the wiring in your home. It could be caused by any appliance in your home - or from the utility itself. You'll have to go around unplugging everything (or shutting circuit breakers off) one by one until you find the source. Don't forget to plug the radio into a different circuit after you've gone thru every circuit - just in case it was plugged into the circuit that was the source of the noise.
IF the noise was present while on battery power, the above test will help determine if the noise source in your house, too. You may have to contact the utility about the noise problem - or it may be a problem within a neighbor's home too. Walk around with a battery operated radio on 96.1 and listen for a stronger sounding noise from the speaker. The closer you get to the source will provide a louder sound.
I have same system and had same problem until I connected digital audio coax to receiver from digital source.(orange port). Also try making the center front speaker much louder volume setting than all other speakers. hope it helps.
Try to see if the reciever will make the buzzing/noise without anything connected to it except power, and speakers. Tune into a local radio station and see if the noise continues. If the noise has stopped, then you know there is an issue with the player or cable.
You must be running on pc, or it sounds like you may have a ground loop issue. If you are running a mac, then bus power over the firewire should be enough. If your running on a pc, try getting a pcmcia card with 6 pin firewire ports. If not then your pc laptop will have to power the 410 via ac adapter. That means both should be plugged in tot he wall. Ive gotten that interference before, and gett it on any audio, whether im producing or playing itunes. I find the trick is to reset the 410 via the output window in the top right. It's right above the level knob. Also, try just installing the latest driver, with the 410 disconnected, then launch it from a different file path than the icon.
I still use it for the macbook pro, and its not always top notch. I bought it 3 years ago for 500, and i see what 500 buys nowadays.......MOTU!!!!
Thanks for the quick response, I will take the speakers to the service to know if they can do something.