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Re: Audio work around..

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On Wednesday, 7 Dec 2016 10:48 PM, 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.

if he's not hot switching all he needs is a simple switch like that. but 
why bother making one? plenty of ready made ones available, jaycar, 
eBay, etc.,
eg: random example < 
http://www.ebay.com.au/itm/RCA-Two-Port-Audio-Video-Switch-Box-for-DVD-Xbox-TV-/391244576990?hash=item5b17fe78de:g:jDgAAOSwLF1YAImr 
 > but even cheaper than that

>
> 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.
>
>

he needs to use a metal version for shielding

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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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