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I received a set of active noise cancellation earphones SNC100 for Christmas. One of the ear phones doesn't work-no sound. How do I exchange these without a receipt? Donna Malkie donna.malkie@pb.com

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The receipt is critical for exchange, the person who gave it to you must have a record of the purchase, if it was paid by credit card that would be enough proof to have the exchange in your favor, but the original buyer must make the exchange for you to avoid confusion.

Posted on Dec 30, 2010

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My tzumi wireless Bluetooth earbuds didn't come with instructions


You could ask direct. Link at the bottom. Normally, you just switch them on and then set your phone to search and then when found you click on it and then PAIR. If it asks for a code the default is 0000 (4 x zeros)

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  • Support Tzumi

    May 02, 2016 | Radio Communications

    1 Answer

    Severe squelch in left ear phone


    The design of these headphones includes a microphone on the outside and on the inside of each earcup. The outside microphone detects outside noise. The inside microphone monitors what you are hearing and when it detects that the outside noise is present inside, the active noise-canceling circuits remove that noise. This happens fast enough that you perceive a significant reduction in the outside noise getting to your ears.

    The airspace inside the earcup is a tuned chamber defined by the shape of the foam in the ear cushion. This is important because with the inside microphone in close proximity, but at a 90-degree angle to the speaker, the circuit must be designed to eliminate the normal feedback that occurs.

    If the foam in the ear cushion has weakened/deteriorated to the point that it no longer has it's original shape, (in particular the lower half of the ear cushion), the size and shape of the air chamber inside of the earcup is directing more of the speaker sound toward the microphone than the design can compensate for causing audio feedback to occur. You are hearing that feedback.

    On my QC-3 headphones, I can cause the feedback squeal in both earcups, with the left earcup being more sensitive to the shape change than the right.

    It is probably time to replace the ear cushions. If so, they are available from Bose for $35/pair.

    QuietComfort 3 Acoustic Noise Cancelling Headphones Bose Product Support

    They are also available aftermarket at Amazon.com for $16.99/pair
    Replacement Earpad ear pad Cushions For Bose QuietComfort 3 QC3 Headphones...

    or $5.69/pair.
    Bluecell Pair of Replacement Earpad Ear Pad Cushion for Bose Quietcomfort...

    Aug 29, 2013 | Bose QuietComfort 3 Acoustic Noise...

    1 Answer

    Logitech speaker feedback


    Feedback is a sharp, loud noise that can come through the earphones of a headset unexpectedly---it occurs when the headset is getting sound (feed) from someone else speaking or playing music into a microphone. This sound can create a dangerous situation for someone who is operating expensive equipment or flying a plane at the time since it can disable hearing temporarily.
    If you experience feedback often, it could also lead to serious hearing problems.

    Mic Too Close to the Speaker or Volume Too High
    The main cause of a feedback sound in a headset is proximity to a speaker. If a person holding a microphone on the other end gets too close to a speaker, it creates a loop of re-amplified sound that results in the loud, screeching noise. When the volume on the other party's microphone is too high, it is more vulnerable to picking up unwanted noise and feedback from speakers and sound output devices in the room. So make sure that you ask the other party to turn down the microphone to a normal level and stay far from speakers. b> Two Microphones Gathering Same Sound b> When the other party places two microphones too close to each other, it could cause feedback. When positioned toward the sound source (such as a person speaking) the microphones will both pick up the same audio and compete with each other when creating the output of sound, causing a sharp noise in your headset. This problem, called acoustic phase interference, is resolved by simply ensuring that the other party uses one microphone at a time. Poor-Quality Headset or Microphone b> One common cause of feedback is simply a poor-quality headset or microphone. Most modern headsets and microphones have noise-canceling features that manage and kill feedback before it has a chance to occur. These noise-canceling headsets are essential for pilots and aviation crew members. If you hear sudden feedback that is strong enough to hurt your ears, the headset or microphone is simply not properly equipped to actively cancel that unwanted noise before it hits your ears. Buy a higher-quality noise-canceling headset to manage the feedback noise when you're going about your tasks. Hope this helps.

    Dec 23, 2012 | Logitech Z623 Speaker System

    1 Answer

    One ear piece doesnt work


    Go exchange or just buy some new ones..

    Jun 03, 2012 | Apple iPod shuffle MP3 Player

    1 Answer

    Sbc hn050 noise cencelling head phones need replacement ear pads - where and how do I buy them?


    possibly the easiest way is to get a cheap similar looking earphones, and rip the sponge off.
    do look at dollar shops.

    Jun 12, 2011 | Philips Behind-the-Neck Noise Canceling...

    1 Answer

    I have turned the tv on and in the top right hand corner there is a symbol for earphones and i cant get the normal sound back on


    yoiu likely have a sound output selection in you setup menu .. or in some sets they sense the fact that ear phones are plugged in (switch in the ear phone jack) .. and that automatically shuts off the main speakers .. sometimes the ear phone jack gets damaged and the set thinks there is always an earphone plugged in .. if thats the case then the jack would have to be replaced or repaired ... or you could for the time being, run a cable from the ear phone jack to an external amplified speaker (like a computer speaker .. that would get your sound back at least until repairs can be made ..

    Nov 27, 2009 | Cell Phones

    1 Answer

    I have two sets. One has a buzz. The other has a


    Try phoning Sound Idea Audio and Video Store at (817)346-4500 for advice.

    Jul 07, 2009 | Apple Bose QuietComfort 2 Acoustic Noise...

    2 Answers

    I have a problem with earbuds or headphones, when I plug the earbuds in it only plays on my right side of earbuds.


    Hey...that's the exaxt same thing that happened to me. On the same side too.

    If you've had it for awhile the only thing I can suggest is replace it.

    Apr 30, 2009 | Audio Players & Recorders

    7 Answers

    Pioneer sx-315 receiver stays in phones in mode and no sound is coming out of my main speakers


    Simply stick the tip of a screwdriver in the input and it will reset. (:

    Feb 24, 2008 | Pioneer SX-315

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