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[OT] 3.5mm stereo to mono adapter with switch?

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  [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-19 12:29 +0000
    Re: [OT] 3.5mm stereo to mono adapter with switch? Andy Burns <usenet@andyburns.uk> - 2016-11-19 12:35 +0000
      Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-19 12:48 +0000
        Re: [OT] 3.5mm stereo to mono adapter with switch? Andy Burns <usenet@andyburns.uk> - 2016-11-19 13:05 +0000
          Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-19 13:13 +0000
            Re: [OT] 3.5mm stereo to mono adapter with switch? Andy Burns <usenet@andyburns.uk> - 2016-11-19 13:34 +0000
        Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-19 14:55 +0100
          Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-19 15:23 +0000
            Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-20 14:27 +0100
            Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-20 13:59 -0500
              Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-20 20:01 +0000
                Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-20 15:43 -0500
            Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-20 14:22 -0500
              Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-21 01:47 +0000
                Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-21 19:26 -0500
                Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-21 19:39 -0500
                  Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-22 04:23 +0100
                    Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-22 01:51 -0500
                      Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-22 11:22 +0000
              Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-21 15:03 +0100
        Re: [OT] 3.5mm stereo to mono adapter with switch? John #9 <john#9@Invalid.invalid> - 2016-11-19 15:30 +0000
          Re: [OT] 3.5mm stereo to mono adapter with switch? John #9 <john#9@Invalid.invalid> - 2016-11-19 15:37 +0000
        Re: [OT] 3.5mm stereo to mono adapter with switch? "Brian Gaff" <briang1@blueyonder.co.uk> - 2016-11-19 17:48 +0000
          Re: [OT] 3.5mm stereo to mono adapter with switch? Terry Casey <k.type@example.invalid> - 2016-11-19 18:08 +0000
            Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-19 19:01 +0000
              Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-20 14:27 -0500
            Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-20 14:19 +0100
          Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-19 18:56 +0000
        Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-20 13:50 -0500
        Re: [OT] 3.5mm stereo to mono adapter with switch? Martin Brown <|||newspam|||@nezumi.demon.co.uk> - 2016-11-23 08:35 +0000
    Re: [OT] 3.5mm stereo to mono adapter with switch? Harry Bloomfield <harry.m1byt@NOSPAM.tiscali.co.uk> - 2016-11-19 12:41 +0000
      Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-19 13:07 +0000
      Re: [OT] 3.5mm stereo to mono adapter with switch? roger@hayter.org (Roger Hayter) - 2016-11-19 13:54 +0000
        Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-19 15:17 +0000
          Re: [OT] 3.5mm stereo to mono adapter with switch? lew <citrustwosac@google.mailer.company.invalid> - 2016-11-20 02:48 +0000
            Re: [OT] 3.5mm stereo to mono adapter with switch? Someone Somewhere <nntpac@gmail.com> - 2016-11-20 07:59 +0000
            Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-20 10:30 +0000
              Re: [OT] 3.5mm stereo to mono adapter with switch? lew <citrustwosac@google.mailer.company.invalid> - 2016-11-20 17:29 +0000
            Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-20 14:36 -0500
          Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-20 14:32 -0500
            Re: [OT] 3.5mm stereo to mono adapter with switch? The Natural Philosopher <tnp@invalid.invalid> - 2016-11-20 22:08 +0000
        Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-20 14:22 +0100
    Re: [OT] 3.5mm stereo to mono adapter with switch? Neil <neil@myplaceofwork.com> - 2016-11-19 08:45 -0500
      Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-19 15:14 +0000
        Re: [OT] 3.5mm stereo to mono adapter with switch? "Rod Speed" <rod.speed.aaa@gmail.com> - 2016-11-20 06:13 +1100
          Re: [OT] 3.5mm stereo to mono adapter with switch? Neil <neil@myplaceofwork.com> - 2016-11-19 14:36 -0500
            Re: [OT] 3.5mm stereo to mono adapter with switch? "Rod Speed" <rod.speed.aaa@gmail.com> - 2016-11-20 08:19 +1100
              Re: [OT] 3.5mm stereo to mono adapter with switch? Neil <neil@myplaceofwork.com> - 2016-11-19 17:47 -0500
                Re: [OT] 3.5mm stereo to mono adapter with switch? "Rod Speed" <rod.speed.aaa@gmail.com> - 2016-11-20 09:53 +1100
            Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-20 14:40 -0500
              Re: [OT] 3.5mm stereo to mono adapter with switch? Neil <neil@myplaceofwork.com> - 2016-11-20 14:53 -0500
              Re: [OT] 3.5mm stereo to mono adapter with switch? "Rod Speed" <rod.speed.aaa@gmail.com> - 2016-11-21 07:40 +1100
              Re: [OT] 3.5mm stereo to mono adapter with switch? roger@hayter.org (Roger Hayter) - 2016-11-21 01:17 +0000
    Re: [OT] 3.5mm stereo to mono adapter with switch? "Brian Gaff" <briang1@blueyonder.co.uk> - 2016-11-19 17:45 +0000
      Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-20 14:27 +0100
        Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-20 18:09 +0000
          Re: [OT] 3.5mm stereo to mono adapter with switch? "Rod Speed" <rod.speed.aaa@gmail.com> - 2016-11-21 07:18 +1100
          Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-21 21:36 +0100
            Re: [OT] 3.5mm stereo to mono adapter with switch? pamela <invalid@nospam.com> - 2016-11-22 15:57 +0000
              Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-22 19:16 +0100
                Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-23 03:02 -0500
                  Re: [OT] 3.5mm stereo to mono adapter with switch? "Carlos E.R." <robin_listas@invalid.es> - 2016-11-23 14:46 +0100
                    Re: [OT] 3.5mm stereo to mono adapter with switch? micky <NONONOmisc07@bigfoot.com> - 2016-11-24 18:54 -0500

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#36110

On 20/11/16 19:32, micky wrote:
> ...was originally about propriety, morality, the
> quality of public speech, etc. just as the name implies, but it was
> taken over by drug-using pot-smoking hippies and now its goals are
> entirely different.
>

Well that's Corbyn's labour party for you.


-- 
"When one man dies it's a tragedy. When thousands die it's statistics."

Josef Stalin

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#36078

On 2016-11-19 14:54, Roger Hayter wrote:
> Harry Bloomfield <harry.m1byt@NOSPAM.tiscali.co.uk> wrote:


>> DIY? Buy a short 3.5mm stereo extension lead (I bought a 12" long one
>> last week), cut into it to extricate the wires for both channels, then
>> add a small switch to short the two channels together. Cover switch and
>> cables after testing, with some Milliput.
> 
> It may well be commonly done, but it is not a good idea to short the
> stereo channels together.  Probably the amplifier is protected against
> electrical damage but as far as the difference signal is concerned the
> behaviour is probably not defined.  Either use just one channel or
> connect the two stereo channels through two resistors high enough to
> maintain linearity but low enough not to use all the power.  The value
> obviously depends what the load is and what load the amplifier is
> intended for.  

But the amplifier is not designed for that different output impedance,
so it is, at least, working out of specs. Probably distorting as well.
Maybe not. It has to be calculated or tested for each case.


-- 
Cheers, Carlos.

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#36045

On 11/19/2016 7:29 AM, pamela wrote:
> I'm looking for an adapter which goes from a 3.5mm stereo plug to
> 3.5mm mono socket similar to this:
>
> http://www.mcmelectronics.com/content/productimages/s5/27-7921.jpg
>
> However I want the adapter to provide a mono/stereo switch.
>
> Ideally one solid piece including the switch.  An inline adapter
> cable with a mono/stereo switch might be okay.  I can't find
> anything!
>
> This is for carrying around so ease of use is important which
> means anything with a box is no good.
>
Offhand, the easiest solution is to use two separate plugs of different 
colors.

-- 
best regards,

Neil

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#36048

On 13:45  19 Nov 2016, Neil wrote:

> On 11/19/2016 7:29 AM, pamela wrote:
>> I'm looking for an adapter which goes from a 3.5mm stereo plug
>> to 3.5mm mono socket similar to this:
>>
>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.j
>> pg 
>>
>> However I want the adapter to provide a mono/stereo switch.
>>
>> Ideally one solid piece including the switch.  An inline
>> adapter cable with a mono/stereo switch might be okay.  I can't
>> find anything!
>>
>> This is for carrying around so ease of use is important which
>> means anything with a box is no good.
>>
> Offhand, the easiest solution is to use two separate plugs of
> different colors.

The plug is fitted to the headphone lead.  How do I easily have two 
plugs?  

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#36059

"pamela" <invalid@nospam.com> wrote in message 
news:XnsA6C59B219CFA8D4AM2@81.171.118.178...
> On 13:45  19 Nov 2016, Neil wrote:
>
>> On 11/19/2016 7:29 AM, pamela wrote:
>>> I'm looking for an adapter which goes from a 3.5mm stereo plug
>>> to 3.5mm mono socket similar to this:
>>>
>>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.j
>>> pg
>>>
>>> However I want the adapter to provide a mono/stereo switch.
>>>
>>> Ideally one solid piece including the switch.  An inline
>>> adapter cable with a mono/stereo switch might be okay.  I can't
>>> find anything!
>>>
>>> This is for carrying around so ease of use is important which
>>> means anything with a box is no good.
>>>
>> Offhand, the easiest solution is to use two separate plugs of
>> different colors.
>
> The plug is fitted to the headphone lead.  How do I easily have two
> plugs?

Have two separate very short adapters that go between the headphone
lead and what it is plugged into. You used the appropriate one to get
the result you want instead of having an adapter with a switch. 

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#36060

On 11/19/2016 2:13 PM, Rod Speed wrote:
>
>
> "pamela" <invalid@nospam.com> wrote in message
> news:XnsA6C59B219CFA8D4AM2@81.171.118.178...
>> On 13:45  19 Nov 2016, Neil wrote:
>>
>>> On 11/19/2016 7:29 AM, pamela wrote:
>>>> I'm looking for an adapter which goes from a 3.5mm stereo plug
>>>> to 3.5mm mono socket similar to this:
>>>>
>>>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.j
>>>> pg
>>>>
>>>> However I want the adapter to provide a mono/stereo switch.
>>>>
>>>> Ideally one solid piece including the switch.  An inline
>>>> adapter cable with a mono/stereo switch might be okay.  I can't
>>>> find anything!
>>>>
>>>> This is for carrying around so ease of use is important which
>>>> means anything with a box is no good.
>>>>
>>> Offhand, the easiest solution is to use two separate plugs of
>>> different colors.
>>
>> The plug is fitted to the headphone lead.  How do I easily have two
>> plugs?
>
> Have two separate very short adapters that go between the headphone
> lead and what it is plugged into. You used the appropriate one to get
> the result you want instead of having an adapter with a switch.
 >
Exactly. Another benefit of this approach is that you won't risk damage 
to the output of the stereo devices.

-- 
best regards,

Neil

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#36065

"Neil" <neil@myplaceofwork.com> wrote in message 
news:o0q9il$tok$1@dont-email.me...
> On 11/19/2016 2:13 PM, Rod Speed wrote:
>>
>>
>> "pamela" <invalid@nospam.com> wrote in message
>> news:XnsA6C59B219CFA8D4AM2@81.171.118.178...
>>> On 13:45  19 Nov 2016, Neil wrote:
>>>
>>>> On 11/19/2016 7:29 AM, pamela wrote:
>>>>> I'm looking for an adapter which goes from a 3.5mm stereo plug
>>>>> to 3.5mm mono socket similar to this:
>>>>>
>>>>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.j
>>>>> pg
>>>>>
>>>>> However I want the adapter to provide a mono/stereo switch.
>>>>>
>>>>> Ideally one solid piece including the switch.  An inline
>>>>> adapter cable with a mono/stereo switch might be okay.  I can't
>>>>> find anything!
>>>>>
>>>>> This is for carrying around so ease of use is important which
>>>>> means anything with a box is no good.
>>>>>
>>>> Offhand, the easiest solution is to use two separate plugs of
>>>> different colors.
>>>
>>> The plug is fitted to the headphone lead.  How do I easily have two
>>> plugs?
>>
>> Have two separate very short adapters that go between the headphone
>> lead and what it is plugged into. You used the appropriate one to get
>> the result you want instead of having an adapter with a switch.
> >
> Exactly. Another benefit of this approach is that you won't risk damage to 
> the output of the stereo devices.

Trouble is she later said that she wants to do A/B comparisons, so needs a 
switch. 

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#36067

On 11/19/2016 4:19 PM, Rod Speed wrote:
>
>
> "Neil" <neil@myplaceofwork.com> wrote in message
> news:o0q9il$tok$1@dont-email.me...
>> On 11/19/2016 2:13 PM, Rod Speed wrote:
>>>
>>>
>>> "pamela" <invalid@nospam.com> wrote in message
>>> news:XnsA6C59B219CFA8D4AM2@81.171.118.178...
>>>> On 13:45  19 Nov 2016, Neil wrote:
>>>>
>>>>> On 11/19/2016 7:29 AM, pamela wrote:
>>>>>> I'm looking for an adapter which goes from a 3.5mm stereo plug
>>>>>> to 3.5mm mono socket similar to this:
>>>>>>
>>>>>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.j
>>>>>> pg
>>>>>>
>>>>>> However I want the adapter to provide a mono/stereo switch.
>>>>>>
>>>>>> Ideally one solid piece including the switch.  An inline
>>>>>> adapter cable with a mono/stereo switch might be okay.  I can't
>>>>>> find anything!
>>>>>>
>>>>>> This is for carrying around so ease of use is important which
>>>>>> means anything with a box is no good.
>>>>>>
>>>>> Offhand, the easiest solution is to use two separate plugs of
>>>>> different colors.
>>>>
>>>> The plug is fitted to the headphone lead.  How do I easily have two
>>>> plugs?
>>>
>>> Have two separate very short adapters that go between the headphone
>>> lead and what it is plugged into. You used the appropriate one to get
>>> the result you want instead of having an adapter with a switch.
>> >
>> Exactly. Another benefit of this approach is that you won't risk
>> damage to the output of the stereo devices.
>
> Trouble is she later said that she wants to do A/B comparisons, so needs
> a switch.
 >
The best (and safest) way to go about that is a lot more complicated 
than a switch.

-- 
best regards,

Neil

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#36069

"Neil" <neil@myplaceofwork.com> wrote in message 
news:o0qkpr$e70$1@dont-email.me...
> On 11/19/2016 4:19 PM, Rod Speed wrote:
>>
>>
>> "Neil" <neil@myplaceofwork.com> wrote in message
>> news:o0q9il$tok$1@dont-email.me...
>>> On 11/19/2016 2:13 PM, Rod Speed wrote:
>>>>
>>>>
>>>> "pamela" <invalid@nospam.com> wrote in message
>>>> news:XnsA6C59B219CFA8D4AM2@81.171.118.178...
>>>>> On 13:45  19 Nov 2016, Neil wrote:
>>>>>
>>>>>> On 11/19/2016 7:29 AM, pamela wrote:
>>>>>>> I'm looking for an adapter which goes from a 3.5mm stereo plug
>>>>>>> to 3.5mm mono socket similar to this:
>>>>>>>
>>>>>>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.j
>>>>>>> pg
>>>>>>>
>>>>>>> However I want the adapter to provide a mono/stereo switch.
>>>>>>>
>>>>>>> Ideally one solid piece including the switch.  An inline
>>>>>>> adapter cable with a mono/stereo switch might be okay.  I can't
>>>>>>> find anything!
>>>>>>>
>>>>>>> This is for carrying around so ease of use is important which
>>>>>>> means anything with a box is no good.
>>>>>>>
>>>>>> Offhand, the easiest solution is to use two separate plugs of
>>>>>> different colors.
>>>>>
>>>>> The plug is fitted to the headphone lead.  How do I easily have two
>>>>> plugs?
>>>>
>>>> Have two separate very short adapters that go between the headphone
>>>> lead and what it is plugged into. You used the appropriate one to get
>>>> the result you want instead of having an adapter with a switch.
>>> >
>>> Exactly. Another benefit of this approach is that you won't risk
>>> damage to the output of the stereo devices.
>>
>> Trouble is she later said that she wants to do A/B comparisons, so needs
>> a switch.
> >
> The best (and safest) way to go about that is a lot more complicated than 
> a switch.

Not really, couple of resistors works fine. 

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#36100

In comp.mobile.android, on Sat, 19 Nov 2016 14:36:29 -0500, Neil
<neil@myplaceofwork.com> wrote:

>On 11/19/2016 2:13 PM, Rod Speed wrote:
>>
>>
>> "pamela" <invalid@nospam.com> wrote in message
>> news:XnsA6C59B219CFA8D4AM2@81.171.118.178...
>>> On 13:45  19 Nov 2016, Neil wrote:
>>>
>>>> On 11/19/2016 7:29 AM, pamela wrote:
>>>>> I'm looking for an adapter which goes from a 3.5mm stereo plug
>>>>> to 3.5mm mono socket similar to this:
>>>>>
>>>>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.j
>>>>> pg
>>>>>
>>>>> However I want the adapter to provide a mono/stereo switch.
>>>>>
>>>>> Ideally one solid piece including the switch.  An inline
>>>>> adapter cable with a mono/stereo switch might be okay.  I can't
>>>>> find anything!
>>>>>
>>>>> This is for carrying around so ease of use is important which
>>>>> means anything with a box is no good.
>>>>>
>>>> Offhand, the easiest solution is to use two separate plugs of
>>>> different colors.
>>>
>>> The plug is fitted to the headphone lead.  How do I easily have two
>>> plugs?
>>
>> Have two separate very short adapters that go between the headphone
>> lead and what it is plugged into. You used the appropriate one to get
>> the result you want instead of having an adapter with a switch.
> >
>Exactly. Another benefit of this approach is that you won't risk damage 
>to the output of the stereo devices.

Why is the monaural setup any different from connecting left to right?  

How do you imagine they do it? 

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#36102

On 11/20/2016 2:40 PM, micky wrote:
> In comp.mobile.android, on Sat, 19 Nov 2016 14:36:29 -0500, Neil
> <neil@myplaceofwork.com> wrote:
>
>> On 11/19/2016 2:13 PM, Rod Speed wrote:
>>>
>>>
>>> "pamela" <invalid@nospam.com> wrote in message
>>> news:XnsA6C59B219CFA8D4AM2@81.171.118.178...
>>>> On 13:45  19 Nov 2016, Neil wrote:
>>>>
>>>>> On 11/19/2016 7:29 AM, pamela wrote:
>>>>>> I'm looking for an adapter which goes from a 3.5mm stereo plug
>>>>>> to 3.5mm mono socket similar to this:
>>>>>>
>>>>>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.j
>>>>>> pg
>>>>>>
>>>>>> However I want the adapter to provide a mono/stereo switch.
>>>>>>
>>>>>> Ideally one solid piece including the switch.  An inline
>>>>>> adapter cable with a mono/stereo switch might be okay.  I can't
>>>>>> find anything!
>>>>>>
>>>>>> This is for carrying around so ease of use is important which
>>>>>> means anything with a box is no good.
>>>>>>
>>>>> Offhand, the easiest solution is to use two separate plugs of
>>>>> different colors.
>>>>
>>>> The plug is fitted to the headphone lead.  How do I easily have two
>>>> plugs?
>>>
>>> Have two separate very short adapters that go between the headphone
>>> lead and what it is plugged into. You used the appropriate one to get
>>> the result you want instead of having an adapter with a switch.
>>>
>> Exactly. Another benefit of this approach is that you won't risk damage
>> to the output of the stereo devices.
>
> Why is the monaural setup any different from connecting left to right?
>
> How do you imagine they do it?
>
I don't need to imagine how it's done. I've designed and constructed 
many pro audio devices over the last several decades.

That said, the simplest arrangement would use paired resistors, but even 
that could be risky, depending on the output design of the amp. Another 
potential down side is that many modern recordings aren't capable of 
true mono due to phase issues in the mix.

-- 
best regards,

Neil

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#36107

"micky" <NONONOmisc07@bigfoot.com> wrote in message 
news:tuu33cp08k6cbel7lol5vml9t2m7hl4dtr@4ax.com...
> In comp.mobile.android, on Sat, 19 Nov 2016 14:36:29 -0500, Neil
> <neil@myplaceofwork.com> wrote:
>
>>On 11/19/2016 2:13 PM, Rod Speed wrote:
>>>
>>>
>>> "pamela" <invalid@nospam.com> wrote in message
>>> news:XnsA6C59B219CFA8D4AM2@81.171.118.178...
>>>> On 13:45  19 Nov 2016, Neil wrote:
>>>>
>>>>> On 11/19/2016 7:29 AM, pamela wrote:
>>>>>> I'm looking for an adapter which goes from a 3.5mm stereo plug
>>>>>> to 3.5mm mono socket similar to this:
>>>>>>
>>>>>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.jpg
>>>>>>
>>>>>> However I want the adapter to provide a mono/stereo switch.
>>>>>>
>>>>>> Ideally one solid piece including the switch.  An inline
>>>>>> adapter cable with a mono/stereo switch might be okay.  I can't
>>>>>> find anything!
>>>>>>
>>>>>> This is for carrying around so ease of use is important which
>>>>>> means anything with a box is no good.
>>>>>>
>>>>> Offhand, the easiest solution is to use two separate plugs of
>>>>> different colors.
>>>>
>>>> The plug is fitted to the headphone lead.  How do I easily have two
>>>> plugs?
>>>
>>> Have two separate very short adapters that go between the headphone
>>> lead and what it is plugged into. You used the appropriate one to get
>>> the result you want instead of having an adapter with a switch.
>> >
>>Exactly. Another benefit of this approach is that you won't risk damage
>>to the output of the stereo devices.
>
> Why is the monaural setup any different from connecting left to right?
>
> How do you imagine they do it?

Trivial to do it with resistors. 

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#36111

micky <NONONOmisc07@bigfoot.com> wrote:

> In comp.mobile.android, on Sat, 19 Nov 2016 14:36:29 -0500, Neil
> <neil@myplaceofwork.com> wrote:
> 
> >On 11/19/2016 2:13 PM, Rod Speed wrote:
> >>
> >>
> >> "pamela" <invalid@nospam.com> wrote in message
> >> news:XnsA6C59B219CFA8D4AM2@81.171.118.178...
> >>> On 13:45  19 Nov 2016, Neil wrote:
> >>>
> >>>> On 11/19/2016 7:29 AM, pamela wrote:
> >>>>> I'm looking for an adapter which goes from a 3.5mm stereo plug
> >>>>> to 3.5mm mono socket similar to this:
> >>>>>
> >>>>> http://www.mcmelectronics.com/content/productimages/s5/27-7921.j
> >>>>> pg
> >>>>>
> >>>>> However I want the adapter to provide a mono/stereo switch.
> >>>>>
> >>>>> Ideally one solid piece including the switch.  An inline
> >>>>> adapter cable with a mono/stereo switch might be okay.  I can't
> >>>>> find anything!
> >>>>>
> >>>>> This is for carrying around so ease of use is important which
> >>>>> means anything with a box is no good.
> >>>>>
> >>>> Offhand, the easiest solution is to use two separate plugs of
> >>>> different colors.
> >>>
> >>> The plug is fitted to the headphone lead.  How do I easily have two
> >>> plugs?
> >>
> >> Have two separate very short adapters that go between the headphone
> >> lead and what it is plugged into. You used the appropriate one to get
> >> the result you want instead of having an adapter with a switch.
> > >
> >Exactly. Another benefit of this approach is that you won't risk damage
> >to the output of the stereo devices.
> 
> Why is the monaural setup any different from connecting left to right?
> 
> How do you imagine they do it? 

I imagine they do it through an appropriate resistor network which
allows for the output impedance of the driving stage, and the input
impedance of the driven stage, has an amplifier after the network and,
an output approximately equal to the level of the stereo signal.  With
only 6db attenuation they probably don't have to worry too much about
noise.   But they don't just connect the outputs together.

-- 

Roger Hayter

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#36053

So surely a mono 3.5 is two connector whereas the stereo has three.
 This would mean that you would short one channel out in one case if you 
plugged in a mono phones system.
 Maybe this is why they do not make one.


Brian

-- 
 -----  -
This newsgroup posting comes to you directly from...
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"pamela" <invalid@nospam.com> wrote in message 
news:XnsA6C57F251CCBCD4AM2@81.171.92.183...
> I'm looking for an adapter which goes from a 3.5mm stereo plug to
> 3.5mm mono socket similar to this:
>
> http://www.mcmelectronics.com/content/productimages/s5/27-7921.jpg
>
> However I want the adapter to provide a mono/stereo switch.
>
> Ideally one solid piece including the switch.  An inline adapter
> cable with a mono/stereo switch might be okay.  I can't find
> anything!
>
> This is for carrying around so ease of use is important which
> means anything with a box is no good.
>
>
>
>
>
> -- 
> cross-posted 

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#36080

On 2016-11-19 18:45, Brian Gaff wrote:
> So surely a mono 3.5 is two connector whereas the stereo has three.
>  This would mean that you would short one channel out in one case if you 
> plugged in a mono phones system.
>  Maybe this is why they do not make one.

Exactly.

-- 
Cheers, Carlos.

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#36090

On 13:27  20 Nov 2016, Carlos E.R. wrote: 

> On 2016-11-19 18:45, Brian Gaff wrote: 
>>
>>  So surely a mono 3.5 is two connector whereas the stereo has 
>>  three. 
>>
>>  This would mean that you would short one channel out in one 
>>  case if you plugged in a mono phones system. Maybe this is why
>>  they do not make one. 
> 
> Exactly. 
> 

I suspect the reason no one makes a mono switched adapter is lack
of demand. 

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#36106

"pamela" <invalid@nospam.com> wrote in message 
news:XnsA6C6B8C813C8AD4AM2@81.171.92.183...
> On 13:27  20 Nov 2016, Carlos E.R. wrote:
>
>> On 2016-11-19 18:45, Brian Gaff wrote:
>>>
>>>  So surely a mono 3.5 is two connector whereas the stereo has
>>>  three.
>>>
>>>  This would mean that you would short one channel out in one
>>>  case if you plugged in a mono phones system. Maybe this is why
>>>  they do not make one.
>>
>> Exactly.
>>
>
> I suspect the reason no one makes a mono switched adapter is lack
> of demand.

I don’t give the chinese particularly supply almost everything. 

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#36123

On 2016-11-20 19:09, pamela wrote:
> On 13:27  20 Nov 2016, Carlos E.R. wrote: 
> 
>> On 2016-11-19 18:45, Brian Gaff wrote: 
>>>
>>>  So surely a mono 3.5 is two connector whereas the stereo has 
>>>  three. 
>>>
>>>  This would mean that you would short one channel out in one 
>>>  case if you plugged in a mono phones system. Maybe this is why
>>>  they do not make one. 
>>
>> Exactly. 
>>
> 
> I suspect the reason no one makes a mono switched adapter is lack
> of demand. 

No.

-- 
Cheers, Carlos.

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#36154

On 20:36  21 Nov 2016, Carlos E.R. wrote: 

> On 2016-11-20 19:09, pamela wrote: 
>> On 13:27  20 Nov 2016, Carlos E.R. wrote: 
>> 
>>> On 2016-11-19 18:45, Brian Gaff wrote: 
>>>>
>>>>  So surely a mono 3.5 is two connector whereas the stereo has
>>>>  three. 
>>>>
>>>>  This would mean that you would short one channel out in one 
>>>>  case if you plugged in a mono phones system. Maybe this is 
>>>>  why they do not make one. 
>>>
>>> Exactly. 
>>>
>> 
>> I suspect the reason no one makes a mono switched adapter is 
>> lack of demand. 
> 
> No. 

If there are reasons other than demand for no supply of a switched 
adapter then why don't those reasons prevent supply of this 
non-switched version? 

http://www.mcmelectronics.com/content/productimages/s5/27-7921.jpg

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#36159

On 2016-11-22 16:57, pamela wrote:
> On 20:36  21 Nov 2016, Carlos E.R. wrote: 
> 
>> On 2016-11-20 19:09, pamela wrote: 
>>> On 13:27  20 Nov 2016, Carlos E.R. wrote: 
>>>
>>>> On 2016-11-19 18:45, Brian Gaff wrote: 
>>>>>
>>>>>  So surely a mono 3.5 is two connector whereas the stereo has
>>>>>  three. 
>>>>>
>>>>>  This would mean that you would short one channel out in one 
>>>>>  case if you plugged in a mono phones system. Maybe this is 
>>>>>  why they do not make one. 
>>>>
>>>> Exactly. 
>>>>
>>>
>>> I suspect the reason no one makes a mono switched adapter is 
>>> lack of demand. 
>>
>> No. 
> 
> If there are reasons other than demand for no supply of a switched 
> adapter then why don't those reasons prevent supply of this 
> non-switched version? 
> 
> http://www.mcmelectronics.com/content/productimages/s5/27-7921.jpg

That thing is very cheap. A switch is more expensive and can fail.

-- 
Cheers, Carlos.

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