K3 audio speaker jack
Locked
 
|
I have a BHI noise reduction speaker, this speaker has a cable with a mono
plug. (3.5mm, sleeve and tip) I have learned that this plug should not be used with the K3. My question: when I exchange the speaker cable with a stereo plug, should I leave the ring unconnceted or is it better to connect left and right channel (ring and tip) to the BHI speaker? 73! de Werner OE9FWV -- Originality: n., ability to conceal sources Email powered by Pegasus Mail free at <http://www.pmail.com> Homepage: <http://www.qsl.net/oe9fwv/> Fone +43 5522 75013 Fax +43 5522 22505 Mobile +43 664 6340014 Fax-Email Gateway +43 820 220262990 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
Werner,
Just a guess, but most devices like that have a relatively high input impedance - that means you should be able to connect both tip and ring together, bridging both channels of the audio amp in the K3. Check the specs on the speaker - if it states that the input impedance is low, then just connect the tip and the shell. Definitely, change the plug to a stereo plug no matter what else you do - you will stress the audio amp if you short its output. 73, Don W3FPR On 10/27/2010 3:36 AM, Dr. Werner Furlan wrote: > I have a BHI noise reduction speaker, this speaker has a cable with a mono > plug. (3.5mm, sleeve and tip) I have learned that this plug should not be > used with the K3. > My question: when I exchange the speaker cable with a stereo plug, should > I leave the ring unconnceted or is it better to connect left and right > channel (ring and tip) to the BHI speaker? > > 73! de Werner OE9FWV > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
In reply to this post by oe9fwv
Please leave the ring unconnected. If you conenct them, then you will be
shorting the two audio channels of the K3 together. 73, Lyle KK7P > My question: when I exchange the speaker cable with a stereo plug, should > I leave the ring unconnceted or is it better to connect left and right > channel (ring and tip) to the BHI speaker? ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
In reply to this post by Don Wilhelm-4
thank you to all who responded,
I am using a stereo plug now and I left the ring unconnected. A short test revealed no difference in loudness or sound when I shorted both channels with only the MAIN RX, but a decrease in loudness when the SUB RX is activated, which is not what I would like to see. 73! de Werner OE9FWV |
|
|
In reply to this post by oe9fwv
If you don't want to mess with soldering, Radioshack sells stereo-mono adapter (part number 274-374). ----- Original Message ----- From: "Dr. Werner Furlan" <[hidden email]> To: [hidden email] Sent: Wednesday, October 27, 2010 3:36:07 AM Subject: [Elecraft] K3 audio speaker jack I have a BHI noise reduction speaker, this speaker has a cable with a mono plug. (3.5mm, sleeve and tip) I have learned that this plug should not be used with the K3. My question: when I exchange the speaker cable with a stereo plug, should I leave the ring unconnceted or is it better to connect left and right channel (ring and tip) to the BHI speaker? 73! de Werner OE9FWV -- Originality: n., ability to conceal sources Email powered by Pegasus Mail free at <http://www.pmail.com> Homepage: <http://www.qsl.net/oe9fwv/> Fone +43 5522 75013 Fax +43 5522 22505 Mobile +43 664 6340014 Fax-Email Gateway +43 820 220262990 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
The RS adapter will merely move the point
where the short occurs. The one channel of the stereo adapter will still be shorted by the mono plugs on the speaker/s. 73! Ken Kopp - K0PP [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
Incorrect. The adapter combines both channels into one. Nothing is shorted to ground. ----- Original Message ----- From: "Ken Kopp" <[hidden email]> To: "k igor" <[hidden email]>, [hidden email] Sent: Wednesday, October 27, 2010 12:48:57 PM Subject: Re: [Elecraft] K3 audio speaker jack The RS adapter will merely move the point where the short occurs. The one channel of the stereo adapter will still be shorted by the mono plugs on the speaker/s. 73! Ken Kopp - K0PP [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
Right, but the low impedance output of one channel is loaded by the low impedance output of the other channel. Not good. >Incorrect. The adapter combines both channels into one. Nothing is >shorted to ground. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
In reply to this post by k.igor
> Incorrect. The adapter combines both channels into one. No, the Radio Shack adapter shorts the outputs of the audio amplifier to each other with no "build out" resistor. That can damage for the amplifier chip - the LM4950 is not spec'd for parallel operation. As Wayne has already stated, do not connect the tip/ring together. 73, ... Joe, W4TV On 10/27/2010 2:31 PM, [hidden email] wrote: > > > Incorrect. The adapter combines both channels into one. Nothing is shorted to ground. > > > ----- Original Message ----- > From: "Ken Kopp"<[hidden email]> > To: "k igor"<[hidden email]>, [hidden email] > Sent: Wednesday, October 27, 2010 12:48:57 PM > Subject: Re: [Elecraft] K3 audio speaker jack > > The RS adapter will merely move the point > where the short occurs. The one channel of > the stereo adapter will still be shorted by the > mono plugs on the speaker/s. > > 73! Ken Kopp - K0PP > [hidden email] > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
In reply to this post by Ken Kopp-3
All,
Ok then, so the optimal solution then would be to build a stereo to mono adapter where one side of the stereo audio and the ground would get wired to a mono jack (pick your size)tip and ring for use by the mono speaker, and the other audio channel from the stereo connector would be connected to ground via an 8 ohm, 2W resistor. In that manner, all parts of the audio amplifier are properly terminated. 73 Gene K1NR K2 6Kxx On Wed, 27 Oct 2010 16:48:57 -0000 "Ken Kopp" <[hidden email]> wrote: > The RS adapter will merely move the point > where the short occurs. The one channel of > the stereo adapter will still be shorted by the > mono plugs on the speaker/s. > > 73! Ken Kopp - K0PP > [hidden email] > > > > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: > http://www.qsl.net/donate.html --------------------------------------------------------------------- Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
In reply to this post by Joe Subich, W4TV-4
Shorting the outputs of the audio channels together MAY not blow
anything up, but it puts the output of one channel as the load of another. Translate: distortion. Do NOT use the RS adapter. 73, Guy. On Wed, Oct 27, 2010 at 3:22 PM, Joe Subich, W4TV <[hidden email]> wrote: > > > Incorrect. The adapter combines both channels into one. > > No, the Radio Shack adapter shorts the outputs of the audio > amplifier to each other with no "build out" resistor. That > can damage for the amplifier chip - the LM4950 is not spec'd > for parallel operation. > > As Wayne has already stated, do not connect the tip/ring > together. > > 73, > > ... Joe, W4TV > > On 10/27/2010 2:31 PM, [hidden email] wrote: >> >> >> Incorrect. The adapter combines both channels into one. Nothing is shorted to ground. >> >> >> ----- Original Message ----- >> From: "Ken Kopp"<[hidden email]> >> To: "k igor"<[hidden email]>, [hidden email] >> Sent: Wednesday, October 27, 2010 12:48:57 PM >> Subject: Re: [Elecraft] K3 audio speaker jack >> >> The RS adapter will merely move the point >> where the short occurs. The one channel of >> the stereo adapter will still be shorted by the >> mono plugs on the speaker/s. >> >> 73! Ken Kopp - K0PP >> [hidden email] >> >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
In reply to this post by Eugene Balinski
The radio shack adapter #274-375 does not short them. It separates the
1/8 Stereo plug into two 1/8 mono jacks. Plugging into the channel of interest should be fine. The catalog states, "Use to separate left and right channel signals." 73, Bob K2TK > On Wed, 27 Oct 2010 16:48:57 -0000 > "Ken Kopp"<[hidden email]> wrote: > >> The RS adapter will merely move the point >> where the short occurs. The one channel of >> the stereo adapter will still be shorted by the >> mono plugs on the speaker/s. >> >> 73! Ken Kopp - K0PP >> [hidden email] >> >> >> > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
In reply to this post by Guy, K2AV
>> Shorting the outputs of the audio channels together MAY not blow >> anything up, *May* is the operative word. If one has the sub RX on with audio balance fully to one side and audio turned toward the maximum driving relatively high impedance speakers, the amplifier *can* be damaged. Since the amplifier is fragile enough and it is located on the DSP board (difficult to access and replace), connecting the left/right channels in parallel is an extremely bad idea. 73, ... Joe, W4TV On 10/27/2010 3:28 PM, Guy Olinger K2AV wrote: > Shorting the outputs of the audio channels together MAY not blow > anything up, but it puts the output of one channel as the load of > another. Translate: distortion. Do NOT use the RS adapter. 73, Guy. > > On Wed, Oct 27, 2010 at 3:22 PM, Joe Subich, W4TV<[hidden email]> wrote: >> >> > Incorrect. The adapter combines both channels into one. >> >> No, the Radio Shack adapter shorts the outputs of the audio >> amplifier to each other with no "build out" resistor. That >> can damage for the amplifier chip - the LM4950 is not spec'd >> for parallel operation. >> >> As Wayne has already stated, do not connect the tip/ring >> together. >> >> 73, >> >> ... Joe, W4TV >> >> On 10/27/2010 2:31 PM, [hidden email] wrote: >>> >>> >>> Incorrect. The adapter combines both channels into one. Nothing is shorted to ground. >>> >>> >>> ----- Original Message ----- >>> From: "Ken Kopp"<[hidden email]> >>> To: "k igor"<[hidden email]>, [hidden email] >>> Sent: Wednesday, October 27, 2010 12:48:57 PM >>> Subject: Re: [Elecraft] K3 audio speaker jack >>> >>> The RS adapter will merely move the point >>> where the short occurs. The one channel of >>> the stereo adapter will still be shorted by the >>> mono plugs on the speaker/s. >>> >>> 73! Ken Kopp - K0PP >>> [hidden email] >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[hidden email] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
In reply to this post by k.igor
Beware of some of these stereo to mono adapters - either obtain a
clear picture of "which is connected to what" (also known as a schematic), or check out the connections with your ohmmeter. I have encountered some that were not what they appeared to be in the header description of the adapter. Not all are that way, but I have found some that were not "as expected". 73, Don W3FPR On 10/27/2010 12:40 PM, [hidden email] wrote: > > If you don't want to mess with soldering, Radioshack sells stereo-mono adapter (part number 274-374). > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
|
|
In reply to this post by Eugene Balinski
The easy solution (just as Werner said he did) is to change the plug
to a stereo plug and wire only the tip and the shell. Problem solved. 73, Don W3FPR On 10/27/2010 3:26 PM, Eugene Balinski wrote: > All, > > Ok then, so the optimal solution then would be to > build a stereo to mono adapter where one side of the stereo > audio and the ground would get wired to a mono jack (pick > your size)tip and ring for use by the mono speaker, and the > other audio channel from the stereo connector would be > connected to ground via an 8 ohm, 2W resistor. In that > manner, all parts of the audio amplifier are properly > terminated. > > 73 > > Gene K1NR > K2 6Kxx > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
«
Return to [K3]
|
1 view|%1 views
| Free forum by Nabble | Edit this page |