RE: [Elecraft] K2 Headphone Recommendations
> -Original Message- > > > I need to order a set of headphones. They'll be used on my K2 for CW > > primarily. Apart from comfort in wearing, and how desirable it is that the headphones supress external noise, the sensitivity is the main issue with the K2. The K2 has relatively low output so look for the sensitivity given in dB SPL/mw, i.e. db Sound Pressure Level when driven with 1 mW of electrical power. SPL is defined as dB relative to 20 uPa of sound pressure. I now use a pair with 106 dB SPL/mW, but used a pair which were probably in the low 90's previously. They were not sensitive enough. I would look for a pair with better than something like 100 dB SPL/mW sensitivity for the K2. 73 Sverre LA3ZA http://www.qslnet.de/la3za/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Headphone Recommendations
Jerry, I was at our local Big Lots and while looking around I noted they had a new series of headphones on displayunable to pass up a perceived bargain, I bought two pairs..one for my QRP station and one for my main stationthey are simply amazing. They are COBY CV-320 Digital Stereo Headphones with dual volume controls...and oh yes, they cost $5.99 each. 72 Tony, W4FOA PS: Usual disclaimers apply - Original Message - From: "nr5a" <[EMAIL PROTECTED]> To: "Elecraft Discussion List" Sent: Wednesday, December 21, 2005 2:53 PM Subject: Re: [Elecraft] K2 Headphone Recommendations Interesting subject as the old Radio Shack Communications headphones I've been using for a good many years gave out last night, now I'm in the market for new headphones too. LOL Jerry - NR5A - South Dakota - Original Message - From: "J F" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "Elecraft Discussion List" Sent: Wednesday, December 21, 2005 4:30 AM Subject: [Elecraft] K2 Headphone Recommendations Hi Kevin, I use the "cheapie" portable player type earphones. These insert in your ear with a cross band over the top of your head (bud types are similiar, but find they pull out too easily). These phones are generally 16Ohms and only require about 50mW to drive them. I definitely suggest you look for low drive power, as it will give you more control with the volume pot. They generally run $9.95. The only thing I don't like about them is the short cords, usually only a meter long. Why not regular headphones? I find for digging weak signals out in a contest or on the low bands (on CW) these do the best job of the half dozen or so types I've tried. Now, does anyone know of any wireless headphones of the same style that are available on the market? ;o) Happy holidays! 73, Julius n2wn ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Headphone Recommendations
Interesting subject as the old Radio Shack Communications headphones I've been using for a good many years gave out last night, now I'm in the market for new headphones too. LOL Jerry - NR5A - South Dakota - Original Message - From: "J F" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "Elecraft Discussion List" Sent: Wednesday, December 21, 2005 4:30 AM Subject: [Elecraft] K2 Headphone Recommendations Hi Kevin, I use the "cheapie" portable player type earphones. These insert in your ear with a cross band over the top of your head (bud types are similiar, but find they pull out too easily). These phones are generally 16Ohms and only require about 50mW to drive them. I definitely suggest you look for low drive power, as it will give you more control with the volume pot. They generally run $9.95. The only thing I don't like about them is the short cords, usually only a meter long. Why not regular headphones? I find for digging weak signals out in a contest or on the low bands (on CW) these do the best job of the half dozen or so types I've tried. Now, does anyone know of any wireless headphones of the same style that are available on the market? ;o) Happy holidays! 73, Julius n2wn ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: Re: [Elecraft] K2 Headphone Recommendations
Evening Mark, Yes my K2/100 #3255 delivers as is without any mods, but it is good to know about R14 in case something gets "tired", thanks. When there was the discussion about the effect of inductive resistors on the KPA100's gain, I dug into mine. Although its power output on CW and SSB was comfortably within spec on all bands, I was a little concerned about the possibility of unacceptable intermod products. Fortunately the frequency of minimum gain fell outside of our bands, and the six inductive resistors within the PA's feedback networks appeared to be the main culprits. 73, Geoff GM4ESD Mark, NK8Q wrote on Tuesday, December 20, 2005 7:35 PM Your comments pretty well mimic mine I made privately to Kevin as well. However, I found that I had to increase the mic gain on the K2 slightly by changing R14 on the SSB module to 10K (from 1k originally) and now my K2 works great with my Heil headset. Did yours work as is without the mod? I've suggested this mod to others as well and they found that it works well for them as well. I can't take credit for the mod itself as I found it here on the reflector quite some time ago, I just passed along what worked for me. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: Re: [Elecraft] K2 Headphone Recommendations
Geoffrey, Your comments pretty well mimic mine I made privately to Kevin as well. However, I found that I had to increase the mic gain on the K2 slightly by changing R14 on the SSB module to 10K (from 1k originally) and now my K2 works great with my Heil headset. Did yours work as is without the mod? I've suggested this mod to others as well and they found that it works well for them as well. I can't take credit for the mod itself as I found it here on the reflector quite some time ago, I just passed along what worked for me. 73, Mark, NK8Q K2 4786 >From: Geoffrey Mackenzie-Kennedy <[EMAIL PROTECTED]> >Date: Tue Dec 20 12:18:55 CST 2005 >To: Kevin Shaw <[EMAIL PROTECTED]> >Cc: Elecraft Discussion List >Subject: Re: [Elecraft] K2 Headphone Recommendations >Kevin, >I took the plunge and bought the Heil Pro-Set Plus headphones / boom mic >(HC4 HC5 elements switchable) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Headphone Recommendations
Kevin, I took the plunge and bought the Heil Pro-Set Plus headphones / boom mic (HC4 HC5 elements switchable) some time back, and have been very pleased. The headphones are very comfortable indeed, and no bent /sore ears-head after wearing them for hours at a time e.g.dabbling in a CW or SSB contest. Being able to 'reverse headphone phasing' (little switch on right hand earphone) is useful in that it helps reduce fatigue during a long session, and at times helps when digging out a signal surrounded by QRM. Another bonus for me is that I get full SSB output using the boom mic without having to add a mic preamp to the K2, or shout! As yet I have not used the HC4 "DX element" in anger since the HC5 appears to get through pile-ups well enough. The usual disclaimer, just a very satisfied customer. 73, Geoff GM4ESD Kevin Shaw wrote on Tuesday, December 20, 2005 4:10 PM I need to order a set of headphones. They'll be used on my K2 for CW primarily. A set with a boom mic may be more useful long term. I did some searching and a ran across a review by someone with a K2 and he was negative on using 8 ohm headphones with his K2 (but he wasn't real specific on why). Specifications say 4 to 32 ohms is OK. Any recommendations? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
