[A6] A6 Main Output Impedance

[Ralph Kruse]

Hi MC,

I just want to balance the cold pin in respect to the hot pin.
To get optimal noise rejection, the cold cable conductor has to be 
terminated at the source side similar to the output stage impedance of the 
unbalanced source (A6 output). So the hot (connected to the source) 
conductor and the cold conductor (connected to ground thru a resistor at the 
source side) receives same amount of hum and noise, that gets canceled in 
the balanced input stage of the mixer.

Regards.
Ralph


----- Original Message ----- 
From: "Michael E. Caloroso" <analoguediehard at att.net>
To: <a6 at code404.com>
Sent: Sunday, February 20, 2005 5:28 PM
Subject: Re: [A6] A6 Main Output Impedance


>> could anyone tell what impedance the A6 has on the main outputs?
>> I want to make a cable for a balanced inputs mixer. So I need a suitable
>> termination resistor for the cold pin on the A6 side of the cable.
>
> I don't know what the output impedance is, but termination resistors are 
> used for long length cables (hundreds of feet) carrying high frequency 
> (Mhz) signals.  They are used to prevent reflections back up the signal 
> cable which can degrade radio or TV signals.  Signals in the audio domain 
> do not suffer from reflections like high frequency signals do.  Seems kind 
> of overkill.
>
> MC
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