[sdiy] stereo output questions.....

[Nate Reeves]

http://www.rane.com/note110.html

this is always a good note to look at when the stereo TRS confusion  
arises from time to time

Cheers,

Nate

On Nov 27, 2008, at 6:15 PM, Neil Johnson wrote:

> Actually, its 'jack plug' and 'jack socket', but to follow your  
> analogy shouldn't it be 'jackie socket'..?
>
> Neil
>
> On 27 Nov 2008, at 21:20, jvastine wrote:
>
>> ...this has been an informative thread...perhaps somebody knows the  
>> answer to this:
>> Now we all know that connectors have 2 components, the male  
>> component commonly called a plug and the female component commonly  
>> called a jack. I am sure that everybody understands the male/female  
>> references here, so with this in mind, why isn't the plug called a  
>> jack & the jack called a jill?
>>
>> Just a bit of food for thought or a good laugh!
>>
>> jvastine
>>
>> ---- Adam Schabtach <lists at studionebula.com> wrote:
>> Uli Berhinger wasn't even born when the term TRS was coined. See this
>> reference:
>> http://books.google.com/books?id=BFcJAAAAIAAJ&pg=RA11-PA36&dq=tip+ring+sleev
>> e+date:0-1922&as_brr=1
>> That's from a book published in 1907. Also see:
>> http://books.google.com/books?id=d7ft6F8ZUdcC&pg=PA64&ots=1f0MXwIa6s&dq= 
>> "pho
>> ne+plug"+"phone+jack"&sig=seKs_oIeUQ-H70mdDWp7cdMqruw#PPA64,M1
>> That's a 20-year-old Yamaha publication. Note that no mention of  
>> _wiring_ is
>> attached to the diagrams for the TRS connectors. Also see pages  
>> 291-294 for
>> usage of the term TRS independent of wiring.
>>
>> The product page you cite in fact says "fully balanced high-quality  
>> 1/4" TRS
>> connectors". If "TRS" implied balanced, why would they use  
>> "balanced" in
>> that statement? It would be redundant. Ditto for the description of  
>> a dbx
>> product here:
>> http://www.dbxpro.com/166XL/166XL.php
>> Note the bullet item "Balanced inputs and outputs on 1/4" TRS and  
>> XLR". The
>> manual for that product says "SIDECHAIN INSERT Jack: This jack  
>> accepts a
>> standard TRS 1/4" phone plug and provides a connection to the 166XL  
>> detector
>> path. The RING
>> acts as a Send, carrying a buffered version of the signal present  
>> at the
>> 166XL INPUT jack, at an impedance of 2k[ohm]. The TIP acts as a  
>> Return for
>> equipment to feed the 166XL's detector circuitry, such as an  
>> equalizer for
>> de-essing or frequency sensitive gating/compression."
>>
>> Seems to me that manufacturers agree with me.
>>
>> --Adam
>>
>>> -----Original Message-----
>>> From: Graham Atkins [mailto:gatkins at blueyonder.co.uk]
>>> Sent: Thursday, November 27, 2008 1:12 PM
>>> To: lists at studionebula.com
>>> Cc: 'sdiy'
>>> Subject: Re: [sdiy] stereo output questions.....
>>>
>>> A 3-circuit 1/4" jack can be used to carry stereo audio but
>>> many companies are usig them to carry balanced audio
>>> presumably because XLR connectors would add to the cost. They
>>> have traditionally been refered to as a stereo jack.
>>> The use for balanced audio is relatively recent and the name
>>> "TRS" is used for this purpose. With headphones you have
>>> either a mono or stereo jack, not TRS. Just look at a few
>>> manufacturers such as this :-
>>>
>>> http://www.behringer.com/PX1000/?lang=ENG
>>>
>>> Graham
>>> On 27 Nov 2008, at 19:30, Adam Schabtach wrote:
>>>
>>>> Um, no, Jure is right. TRS refers to the physical connector; it has
>>>> nothing to do with the signal you carry on the connector.
>>> Consider a
>>>> pair of stereo
>>>> headphones: it uses a TRS plug and carries an unbalanced pair of
>>>> signals.
>>>> TRS jacks are also used on some mixing desks for patching insert
>>>> effects.
>>>> One conductor carries the "send" signal, the other carries the
>>>> "return"
>>>> signal, and the sleeve is used for ground.
>>>>
>>>> Or, for a second opinion:
>>> http://en.wikipedia.org/wiki/Tip_ring_sleeve
>>>> (Not that Wikipedia is the definitive reference, but it does have a
>>>> lengthy
>>>>>>>
>>>
>>>
>>
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>
> --
> http://www.njohnson.co.uk
>
>
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