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Re: Audio work around..

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On Friday, 9 Dec 2016 12:28 AM, Xeno wrote:
> On 8/12/2016 8:56 PM, jonz wrote:
>> On Wednesday, 7 December 2016 22:48:43 UTC+11, Xeno  wrote:
>>> On 7/12/2016 10:17 PM, jonz wrote:
>>>> On Wednesday, 7 December 2016 02:08:38 UTC+11, Clocky  wrote:
>>>>> On 6/12/2016 5:45 PM, jonz wrote:
>>>>>> On Tuesday, 6 December 2016 14:23:09 UTC+11, Xeno  wrote:
>>>>>>> On 6/12/2016 11:36 AM, jonz wrote:
>>>>>>>> Hi all,looking for an easy(ish) way to connect two mobile head 
>>>>>>>> units to one set of speakers.any ideas? Tia
>>>>>>>>
>>>>>>> Apart from the switching arrangement you would need, I'm 
>>>>>>> thinking you
>>>>>>> might need to put a dummy load onto the switched out head unit 
>>>>>>> so it's
>>>>>>> not suddenly driving into an open circuit when you switch. That 
>>>>>>> then
>>>>>>> opens a can of worms with voltage spikes, etc.
>>>>>> ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬
>>>>>>  That`s not a problem, one off, before other on.
>>>>>>>
>>>>>>> I think interfacing an amp, with appropriate inputs and controls,
>>>>>>> between the two head units and the speakers might be the way to 
>>>>>>> go. Got
>>>>>>> any line level outputs on the head units?
>>>>>> ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬
>>>>>>  On one......(the other is 23yrs old) Wondering about utilising a 
>>>>>> multiplexer somehow, or maybe fabricating a mechanical switching 
>>>>>> unit. (rca plugs and sockets etc.)......Been looking for a 
>>>>>> schematic, no luck.
>>>>>>>
>>>>>
>>>>> Many years ago I used 12V relays to switch A/V between different 
>>>>> cameras
>>>>> with the relays controlled using a 555 timer circuit. Worked fine. 
>>>>> Could
>>>>> be adapted for manual control using a switch but then you could also
>>>>> just use a switch.
>>>>>
>>>>> Not ideal trying to switch between outputs though, it would be much
>>>>> better at line levels.
>>>> ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬
>>>> Yep, but trying to stick to the kiss principle. Actually, i prolly 
>>>> have relays etc. here....Might start going thru the boxes of stuff 
>>>> i have cluttering up the joint..... Getting plenty of ideas from 
>>>> you blokes. thanx!.
>>>>
>>> Have you looked at this type of thing? http://tinyurl.com/gs6lntc
>>> Looks to me like it's designed to do what you want. Suitable for two
>>> different apps as source and/or two different speakers sets as 
>>> destinations.
>>>
>>> HiFi stores used to have some arrangement to deal with speaker 
>>> selection
>>> from a range of amps and vice versa. You could put something like the
>>> above into one of these; http://tinyurl.com/gwvecge  then add the
>>> appropriate speaker connectors, suitably labelled, on one side, wire it
>>> up, then mount it on a wall at a suitable location. Good to go.
>>> ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬
>>  In the first post i said this was for mobile use (Pajero wagon) 
>> maybe i did`nt emphasise enough..Anyhoo, From your post, This one 
>> will do it i think.
>>
>> http://tinyurl.com/gs6lntc   $44.50 from the states.
>>
>> The block diagram shows A B AB., run AB and all good.
>>>
>>> -- 
>>> http://www.parts-express.com/pedocs/manuals/300-575--audtek-electronics-iws-abds-in-wall-speaker-source-switch-wiring-diagram.pdf
>
> Belay my other response. I actually reread the documentation and I can 
> see that the source inputs can only be A *or* B and its the outputs 
> that can *also* be AB (together at the same time) as well as 
> individually switched and that is quite acceptable. In fact, it is 
> *exactly* what you need. You can use it with F and R speakers and 
> switch speakers any which way you want.
>
> Looking good!   ;-)
>
>
>

providing he uses 8ohm (or greater) speakers

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Audio work around.. jonz <johnhhhinton7@gmail.com> - 2016-12-05 16:36 -0800
  Re: Audio work around.. Jeßus <j@j.net> - 2016-12-06 13:41 +1100
  Re: Audio work around.. Xeno <xenolith@optusnet.com.au> - 2016-12-06 14:23 +1100
    Re: Audio work around.. felix <me@nothere.invalid> - 2016-12-06 17:57 +1100
      Re: Audio work around.. Xeno <xenolith@optusnet.com.au> - 2016-12-06 21:24 +1100
        Re: Audio work around.. felix <me@nothere.invalid> - 2016-12-07 14:28 +1100
          Re: Audio work around.. felix <me@nothere.invalid> - 2016-12-07 14:37 +1100
    Re: Audio work around.. jonz <johnhhhinton7@gmail.com> - 2016-12-06 01:45 -0800
      Re: Audio work around.. news16 <news16@woa.com.au> - 2016-12-06 10:31 +0000
        Re: Audio work around.. jonz <johnhhhinton7@gmail.com> - 2016-12-07 03:05 -0800
          Re: Audio work around.. felix <me@nothere.invalid> - 2016-12-08 09:37 +1100
      Re: Audio work around.. Xeno <xenolith@optusnet.com.au> - 2016-12-06 21:34 +1100
      Re: Audio work around.. Clocky <notgonn@happen.com> - 2016-12-06 23:08 +0800
        Re: Audio work around.. Xeno <xenolith@optusnet.com.au> - 2016-12-07 12:29 +1100
        Re: Audio work around.. jonz <johnhhhinton7@gmail.com> - 2016-12-07 03:17 -0800
          Re: Audio work around.. Xeno <xenolith@optusnet.com.au> - 2016-12-07 22:48 +1100
            Re: Audio work around.. Xeno <xenolith@optusnet.com.au> - 2016-12-07 23:36 +1100
            Re: Audio work around.. jonz <johnhhhinton7@gmail.com> - 2016-12-07 04:38 -0800
            Re: Audio work around.. felix <me@nothere.invalid> - 2016-12-08 09:46 +1100
            Re: Audio work around.. jonz <johnhhhinton7@gmail.com> - 2016-12-08 01:56 -0800
              Re: Audio work around.. Xeno <xenolith@optusnet.com.au> - 2016-12-09 00:09 +1100
              Re: Audio work around.. Xeno <xenolith@optusnet.com.au> - 2016-12-09 00:28 +1100
                Re: Audio work around.. felix <me@nothere.invalid> - 2016-12-09 07:47 +1100
              Re: Audio work around.. felix <me@nothere.invalid> - 2016-12-09 07:43 +1100

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