Re: [Elecraft] Audio output routing confusion

You don't hear VFOs, you hear receivers. When the subRX is off, the only receiver you can hear is the main receiver. The main receiver's frequency is always controlled by VFO A, so with the subRX off you are always listening on the VFO A frequency (you can press and hold the REV button to swap VFO

Re: [Elecraft] Audio output routing confusion

I think you can only hear Main Rec VFO A or VFO B. The only way to hear VFO A and VFO B at the same time is with KRX3 sub-receiver as VFO B. Sent from my iPhone ...nr4c. bill > On Jul 27, 2020, at 6:32 PM, Jim Rhodes wrote: > > You need to set the "SPKRS" on the Config menu to "1" in order

Re: [Elecraft] Audio output routing confusion

You need to set the "SPKRS" on the Config menu to "1" in order to hear them both at once. On Mon, Jul 27, 2020 at 5:27 AM Eric Rosenberg wrote: > After 6 months off the air, I find myself confused by the K3's audio > output choices. > > While I'm able to hear the Main A VFO and Sub RX VFO throug

[Elecraft] Audio output routing confusion

After 6 months off the air, I find myself confused by the K3's audio output choices. While I'm able to hear the Main A VFO and Sub RX VFO through my one speaker, I can't figure out how to (or if) hear both the Main RX A and B VFOs through that speaker. Is there a way to configure this, or do

Re: [Elecraft] Audio Output Impedance of the KX3

Jim and All, Thanks much for the explanation. Makes a lot more sense now. Not sure how I missed your past comments that covered that. I also got several other responses which were most helpful, and I appreciate them as well. It sure is nice to ask a question and get good answers!! Hi. C

Re: [Elecraft] Audio Output Impedance of the KX3

about impedance issues. Mel, K6KBE From: Don Wilhelm To: w7aqk ; Elecraft Reflector Sent: Monday, January 23, 2017 1:35 PM Subject: Re: [Elecraft] Audio Output Impedance of the KX3 David, Let me try to respond and perhaps Jim will chime in a well. Modern audio amplifier output s

Re: [Elecraft] Audio Output Impedance of the KX3

David, Let me try to respond and perhaps Jim will chime in a well. Modern audio amplifier output stages are very low output impedance devices. As such, they can produce as much power as the device connected will allow. In a practical design of course there is a limit to how much current the a

Re: [Elecraft] Audio Output Impedance of the KX3

On Mon,1/23/2017 12:54 PM, Jim Brown wrote: The impedance of mics is defined as 5X their minimum load impedance. Correction -- one-fifth of their minimum load impedance. For example, a 250 ohm mic should drive an input impedance no lower than 1.25K. Most pro mics are in the range of 150-250 o

Re: [Elecraft] Audio Output Impedance of the KX3

Hi Dave, I've written about this many times, but here goes again. :) Your choice of the words "designed impedance" is a good one. Audio output stages have an internal impedance MUCH lower than the loads they are designed to drive. For example, a typical speaker output stage is designed to d

Re: [Elecraft] Audio Output Impedance of the KX3

Jim, Maybe you could expand on that somewhat as I'm still confused a bit. Perhaps I'm not understanding what I hear, or why, but it almost always seems that when speakers (or headphones) are not closely matched to the designed impedance I notice some deterioration in output. Some mismatch do

Re: [Elecraft] Audio Output Impedance of the KX3

I use from day one headset insten with mic works very will >From my DL750 Digicel On Jan 23, 2017 2:35 PM, a...@sbcglobal.net wrote: A good question? See you got specific answer for K3/K3S but not KX3. Any direct answers for KX3, rather than different headsets? I would go for earbuds for

Re: [Elecraft] Audio Output Impedance of the KX3

A good question?   See you got specific answer for K3/K3S but not KX3.   Any direct answers for KX3, rather than different headsets?   I would go for earbuds for lightest weight but would like high efficiency type with KX3.    Anyone found a good efficient set of earbuds with the KX3?   73, Mik

Re: [Elecraft] Audio Output Impedance of the KX3

I think it is very low on practically all of today's radios and it doesn't matter, the output stage will drive anything. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 1/23/2017 9:00 AM, Joe W2KJ wrote: Howdy Gang: Checked the KX3 manual but was unable to find the audio output imp

Re: [Elecraft] Audio Output Impedance of the KX3

For the speaker output, the K3 and K3S are optimized for 4 ohms. The SP3 is a 4 ohm speaker. 8 Ohm speakers work fine, but a a slightly lower audio output for the same volume control position. Eric /elecraft.com/ On 1/23/2017 9:00 AM, Joe W2KJ wrote: Howdy Gang: Checked the KX3 manual but

Re: [Elecraft] Audio Output Impedance of the KX3

On Mon,1/23/2017 9:22 AM, Walter Underwood wrote: For portable operation, I use Apple EarPods. Those are 45 Ohms. Don't worry about impedance of headphones. There is no need to match impedances in audio circuits. 73, Jim K9YC __ El

Re: [Elecraft] Audio Output Impedance of the KX3

For portable operation, I use Apple EarPods. Those are 45 Ohms. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 23, 2017, at 9:07 AM, Walter Underwood wrote: > > I use Yamaha CM500 headphones and their specs say 120 Ohms. They work fine. > > http://usa.y

Re: [Elecraft] Audio Output Impedance of the KX3

I use Yamaha CM500 headphones and their specs say 120 Ohms. They work fine. http://usa.yamaha.com/products/music-production/accessories/headphones/cm500/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwoo

[Elecraft] Audio Output Impedance of the KX3

Howdy Gang: Checked the KX3 manual but was unable to find the audio output impedance of the KX3, i.e., what impedance headphones/speaker should I be using on the rig? I’m looking to buy a lightweight headset for portable ops and want to know what impedance I should be looking for. Many thanks

[Elecraft] Audio output level using phones on K3

I noticed the output level was quite low compared to the speaker so I went ahead and ordered the Proset-2 thinking it was just a problem with my old headset/boom mic. Guess I will find out if I wasted my money when it all arrives in September.de gary, kd9sv ___

[Elecraft] Audio Output

I have a question related to the audio signal of the K2. I have completed the base K2 and during stage 2 I was already concerned about the low audio output. I first thought that my headphone was to blame, a 16 ohm unit that is not able to transfer all the audio power from the amplifier but now