Re: Remote Power Supply Connection

"Trevor Wilson" <trevor@[EMAIL PROTECTED]
> wrote in message 
news:694fk9F30lh2sU1@[EMAIL PROTECTED]
>
> "BretLudwig" <bratzirules@[EMAIL PROTECTED]
> wrote in message 
> news:7a2f6434985dd93af0ad7ca24683b83c@[EMAIL PROTECTED]
>> "BretLudwig" <bratzirules@[EMAIL PROTECTED]
> wrote in message
>> news:6889949c0f7376f69fcc9ea26ef19be9@[EMAIL PROTECTED]
>>> Fuck Brussels.
>>>
>>> Do it yourself and who will know?
>>>
>>> Put simply the use of an outboard power supply chassis is the OPTIMUM
>> way
>>> to achieve the BEST possible performance.
>>
>> **Nonsense. Whilst an external power supply *may* have some advantages,
>> transferring large amounts of DC is a dumb thing to do. Using AC is far
>> more
>> sensible. Capacitors need to be placed close to output devices, not
many
>> cm away"
>>
>> That defeats the purpose of having the PS outboard. You want the AC OFF
>> the signal chassis!
>
> **Shielding is cheap and simple. By all means, keep the power
transformer 
> off the signal chassis, but rectifying and smoothing, THEN trying to 
> couple the result to the signal chassis is a recipe for disaster.

Please elaborate. What kind of "disaster" ?
My own 50W amp now five years old, has been running
several hours per day without any problems.  It meets my
objective for a very low level of hum and noise.  To build
the same amplifier in a single chassis with the required
physical separation between critical components
would have required a footprint the size of a desktop.
>
>>
>> You want the primary filter caps on the PS chassis and some more on the
>> signal chassis, with a choke before them that sees only the ripple for 
>> AC.
>
> **Nope. You *only* want to transfer AC between chassis. Not DC. Unless
you 
> are a fool, of course.

The idea, Trevor, is to build an audio chassis in which the
only AC is the signal.  It is a very good solution if it can be
implemented in a safe way.

Iain