Re: [Elecraft] KX2 speaker/headphone question

That's the good engineering practice to protect the output stage from shorts. In that situation, 8 ohms will get more power than 4 ohms. It's the classic "maximum power transfer theorem," where, when the LOAD is variable, you get max power when the load Z is equal to the source Z. So it comes

Re: [Elecraft] KX2 speaker/headphone question

@mailman.qth.net Subject: Re: [Elecraft] KX2 speaker/headphone question Hi Ron, Stan was asking about the KX2 which to my knowledge has no 2M/4/M module available. Wish it did :-). None the less a spectacular rig. Cheers, Glen VK1FB On Wednesday, February 8, 2017, Ron D'Eau Claire &l

Re: [Elecraft] KX2 speaker/headphone question

73, Ron AC7AC > > > > > -Original Message- > From: Elecraft [mailto:elecraft-boun...@mailman.qth.net <javascript:;>] > On Behalf Of stan levandowski > Sent: Monday, February 6, 2017 6:09 PM > To: Walter Underwood > Cc: Elecraft@mailman.qth.net <javascrip

Re: [Elecraft] KX2 speaker/headphone question

-Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of stan levandowski Sent: Monday, February 6, 2017 6:09 PM To: Walter Underwood Cc: Elecraft@mailman.qth.net Subject: Re: [Elecraft] KX2 speaker/headphone question Nice speaker but unfortunately won't

Re: [Elecraft] KX2 speaker/headphone question

On Mon,2/6/2017 6:35 PM, Don Wilhelm wrote: One of your big problems is that the speaker specified in that project is 8 ohms - if you can find a 4 ohm speaker, you will almost quadruple the available audio. Not quite. A loudspeaker amplifier is essentially a constant voltage source. If the

Re: [Elecraft] KX2 speaker/headphone question

I didn't know it made that much difference, Don.  My headset is a much higher impedance and I have plenty of audio with it.  Must be something I don't understand here.  Too late to change the speaker; it's all glued in.  I'll take the amp route. On Mon, Feb 06, 2017 at 09:35 PM, Don Wilhelm

Re: [Elecraft] KX2 speaker/headphone question

Bingo.  That makes sense.  I've already sketched out a little 386 amp I can build on a popsicle stick and tomorrow I'll dump my junkbox out on the kitchen table and go to work.  I guess I should start looking at the manual before I bother people!! BTW, other than the volume problem I have,

Re: [Elecraft] KX2 speaker/headphone question

Stan, If you refer to the KX2 Block Diagram (Page 62 of my manual) you will see that the PH (headphone) takeoff is a low level and the SPKR(speaker) output has an additional amplifier associated with it. I think Wayne did this to minimize the current drain when using headphones, while

Re: [Elecraft] KX2 speaker/headphone question

Adjust the sidetone to find exact frequency. It's very sharp and might only work if freq is exact. Sent from my iPhone ...nr4c. bill > On Feb 6, 2017, at 9:08 PM, stan levandowski wrote: > > Nice speaker but unfortunately won't help me out here. Â I need mono output >

Re: [Elecraft] KX2 speaker/headphone question

[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of stan >> levandowski >> Sent: Tuesday, 7 February 2017 11:48 AM >> To: Elecraft@mailman.qth.net >> Subject: [Elecraft] KX2 speaker/headphone question >> >> Hi folks. I need some assistance. Is the

Re: [Elecraft] KX2 speaker/headphone question

Stan, One of your big problems is that the speaker specified in that project is 8 ohms - if you can find a 4 ohm speaker, you will almost quadruple the available audio. The other solution is to use an amplifier. 73, Don W3FPR On 2/6/2017 8:47 PM, stan levandowski wrote: Hi folks. I need

Re: [Elecraft] KX2 speaker/headphone question

aft@mailman.qth.net <mailto:Elecraft@mailman.qth.net> Subject: [Elecraft] KX2 speaker/headphone question Hi folks.  I need some assistance.  Is the KX2's headset jack "padded" to protect hearing? I'm asking because I built the "CW Resonant Speaker" in the current Q

Re: [Elecraft] KX2 speaker/headphone question

;> 73's Peter VK4JD >> >> -Original Message- >> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of >> stan levandowski >> Sent: Tuesday, 7 February 2017 11:48 AM >> To: Elecraft@mailman.qth.net >> Subject: [Elecraft] KX2 speake

Re: [Elecraft] KX2 speaker/headphone question

Just use one channel of the amp. According to the specs, the KX2 external phones jack produces 0.1W stereo (page 65 of the manual). The amp will probably fix your volume problem. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Feb 6, 2017, at 6:08 PM, stan

Re: [Elecraft] KX2 speaker/headphone question

Nice speaker but unfortunately won't help me out here.  I need mono output for this speaker and it's only 2 inches and 8 ohms.  If I could get the volume from the headphone jack that I get from the KX2 speaker, I'd be quite satisfied.  Stan WB2LQF On Mon, Feb 06, 2017 at 08:55 PM, Walter

Re: [Elecraft] KX2 speaker/headphone question

wski Sent: Tuesday, 7 February 2017 11:48 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] KX2 speaker/headphone question Hi folks. I need some assistance. Is the KX2's headset jack "padded" to protect hearing? I'm asking because I built the "CW Resonant Speaker" in the c

Re: [Elecraft] KX2 speaker/headphone question

levandowski Sent: Tuesday, 7 February 2017 11:48 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] KX2 speaker/headphone question Hi folks. I need some assistance. Is the KX2's headset jack "padded" to protect hearing? I'm asking because I built the "CW Resonant Speaker"

Re: [Elecraft] KX2 speaker/headphone question

I use this audio amp to drive speakers from my KX3. It is 15 W per channel stereo, runs off 12 V, and costs under $9. https://smile.amazon.com/gp/product/B00C4MT274/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog)

[Elecraft] KX2 speaker/headphone question

Hi folks.  I need some assistance.  Is the KX2's headset jack "padded" to protect hearing? I'm asking because I built the "CW Resonant Speaker" in the current QST and it works great but the volume is so low that  it's unusable. Do I have to take the speaker output directly off the KX2's

[Elecraft] KX2 speaker/headphone question

Hi folks.  I need some assistance.  Is the KX2's headset jack "padded" to protect hearing? I'm asking because I built the "CW Resonant Speaker" in the current QST and it works great but the volume is s __ Elecraft mailing list Home: