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date: Sat, 07 Nov 2009 10:30:30 GMT,    group: uk.rec.audio        back       
Re: Opinion needed re power amp building   
On Sat, 7 Nov 2009 10:28:31 +0000, David Pitt 
wrote:

>Jim Lesurf  wrote:
>
>> In article , David Pitt
>>  wrote:
>> > Jim Lesurf  wrote:
>> 
>> > > In article , Trevor Wilson
>> > >  wrote:
>> 
>> > [snip - Phase Linear v Perreaux]
>> 
>> > > > **Nope. Both amps are common and cheap.
>> > > 
>> > > Which should make it cheap and easy for you to obtain them for me.
>> > > 
>> > > Afraid I can't recall the last time I saw either amp. Indeed the name
>> > > 'Perraux' does not mean anything to me as I can't recall an amp of
>> > > that name at present.
>> 
>> > http://www.perreaux.com in New Zealand. Expensive!!
>> 
>> So despite what Trevor said, neither common (I can't recall ever
>> encountering one in the UK) nor cheap.
>
>Perreaux kit may be cheap and common in Australia, where Trevor is. From the
>Perreaux site the éloquence range, which uses MOSFET output devices, give an
>output that is "dynamic, commanding and resolute". Trevor would disagree
>with that first term.   

I have no idea what any of those terms means as applied to an
amplifier. Clues anybody?

d
date: Sat, 07 Nov 2009 10:30:30 GMT   author:   (Don Pearce)

Re: Opinion needed re power amp building   
On Sat, 7 Nov 2009 10:58:23 +0000, David Pitt 
wrote:

>spam@spam.com (Don Pearce) wrote:
>
>> On Sat, 7 Nov 2009 10:28:31 +0000, David Pitt  wrote:
>> 
>[snip]
>> >
>> > Perreaux kit may be cheap and common in Australia, where Trevor is. From
>> > the Perreaux site the éloquence range, which uses MOSFET output devices,
>> > give an output that is "dynamic, commanding and resolute". Trevor would
>> > disagree with that first term.
>> 
>> I have no idea what any of those terms means as applied to an amplifier.
>> Clues anybody?
>
>They don't mean anything, in my view, as applied to an amplifier, they are
>of no help at all. That is one reason why I quoted them. The other reason
>being that Trevor had used the term "undynamic" which he backed up with
>"compressed", which is a meaningful term that can be applied to electronics,
>or even applied by electronics, though hopefully not in an amplifier used
>below its clipping point.
>
>The terms could be used to describe a piece of music but the amplifier
>should leave such matters strictly alone and just make it big enough to
>drive the speakers.

Well, yes he certainly spoke of compression in connection with a
MOSFET amp, but when I pressed him on it he first tried to change the
subject, then backed out of the discussion entirely. He has been
silent on the subject since.

I'm afraid Trevor is simply one of those benighted souls who have
swallowed the audiophile dictionary uncritically, and simply babbles
incomprehensibly (even by himself, it seems).

d
date: Sat, 07 Nov 2009 11:03:55 GMT   author:   (Don Pearce)

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