I use these headphones, the QC2. I paid around $100 for them on ebay over a year ago. There's an occasional hum in the right chanel I get every so often but was just sent a "fix" for it a couple days ago. As the "humm" is not there I haven't done the fix. (the hypothesis is a potentiometer needs the occasional turn to restore proper contact). If this is the fix, it is most easy to do.
just in case, I called Bose and they said to get replacement ones as this one is not in warranty anymore would cost me $100. I have worn many headphones in my rock, Acoustic and bluegrass career and I have worn quite a few in my ham Radio hobby too but none are more comfortable or easier to me than these Bose QC2 to listen to when it comes to hearing faint sounds. As to the noise cancelling, I have a Ameritron AL-1500 sitting 2-3 feet from me and it has a fairly audible blower. With these headphones on I can hardly hear the slightest hint of a whisper. I have two studio headphones (Senhauser and Sony) which sound great in a quiet studio but in comparison to the QC2 rate a D minus to the QC2 getting an A minus (Minus because there's always room for improvement. That said, I use the QC2 exclusively with my K3 unless I'm walking about the room. If I'm sitting at the radio, I have the QC2 headphones on. As to the batteries, The QC2 uses one AAA battery. I use Costco and a huge package of the AAA Duracells are quite inexpensive there. but I tend to forget to urn the QC2 off and leave it turned on for long periods of time. Even with Costco's low price, I burn through batteries too fast. Seeing as I lend out my MFJ SWR Analyzer frequently to local club members to tweak their antennae, it burns through 12 AA batteries in a heartbeat. So I have a charger for NIMH batteries and have four AAA And 16 of the AA NIMH batteries that I keep charged and use these in the analyzer and QC2 and forget about battery cost. I chose the QC2 as opposed to the QC3 because the QC3 has an Li internal battery which isn't removed to recharge and I don't want to remove it to recharge the battery in a contest. Also, the QC2 are the most comfortable of any of my headphones and envelop the entire ear so extraneous sounds are quite suppressed. Gary KA1J ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
