In article , Chris Morriss wrote:
The only things in my experience that change their sound in the first
few days of operation are loudspeakers. (And then not by much).

My experience too. The ProAc Response D15s I bought a year ago sounded
very different to the demo pair for about the first hour of operation
but settled in to the familiar sound after the first day or so. Some of
that may have been my ears/expectations but not the first 60 minutes.

The dealer had previously tried to sell me the thesis of needing up to 6
months "running in." I think he was trying to "manage" no-fault returns.

BTW, I looked at the ProAc driver manufacturer's web site and they
recommended two hours of running in for brand new units before testing
their parameters.

--
John Phillips

"John Phillips" wrote in message

In article , Chris Morriss
wrote:
The only things in my experience that change their sound in the first
few days of operation are loudspeakers. (And then not by much).

My experience too. The ProAc Response D15s I bought a year ago
sounded very different to the demo pair for about the first hour of
operation but settled in to the familiar sound after the first day or
so. Some of that may have been my ears/expectations but not the
first 60 minutes.

It's so boring watching true believers pile onto each other with more
ignorance and error.

It's so boring watching true believers pile onto each other with more ignorance
and error. (AK)

For your information, I would agree with others that I hear very little if any
difference with so called 'burn in'. "People who use valves" are no more
predictable than "people who use cars"

=== Andy Evans ===
Visit our Website:- http://www.artsandmedia.com
Audio, music and health pages and interesting links.

"Andy Evans" wrote in message

It's so boring watching true believers pile onto each other with more
ignorance and error. (AK)

For your information, I would agree with others that I hear very
little if any difference with so called 'burn in'.

That's very nice.

"People who use valves" are no more predictable than "people who use
cars"

That's a very gratuitous introduction of the valves/vinyl controversy.

In article ,
Arny Krueger wrote:
My experience too. The ProAc Response D15s I bought a year ago
sounded very different to the demo pair for about the first hour of
operation but settled in to the familiar sound after the first day or
so. Some of that may have been my ears/expectations but not the
first 60 minutes.

It's so boring watching true believers pile onto each other with more
ignorance and error.

I'm willing to accept it's *possible* for a speaker to change slightly
with use. However, I'd expect a decent maker to do this at the factory
before final quality check if it is a real issue.

--
*Nothing is foolproof to a sufficiently talented fool.

Dave Plowman London SW
To e-mail, change noise into sound.

Arny Krueger wrote:
My experience too. The ProAc Response D15s I bought a year ago
sounded very different to the demo pair for about the first hour of
operation but settled in to the familiar sound after the first day or
so. Some of that may have been my ears/expectations but not the
first 60 minutes.

It's so boring watching true believers pile onto each other with more
ignorance and error.

I'm willing to accept it's *possible* for a speaker to change slightly
with use. However, I'd expect a decent maker to do this at the factory
before final quality check if it is a real issue.

Then you should also expect to pay more for that speaker in the shop.

In article ,
JustMe wrote:
I'm willing to accept it's *possible* for a speaker to change slightly
with use. However, I'd expect a decent maker to do this at the factory
before final quality check if it is a real issue.

Then you should also expect to pay more for that speaker in the shop.

To have something perform its best?

Decent speakers will be checked before leaving the factory. Not much of a
problem to run them for a few hours if this really was necessary.

--
*I don't suffer from insanity -- I'm a carrier

Dave Plowman London SW
To e-mail, change noise into sound.

I'm willing to accept it's *possible* for a speaker to change slightly
with use. However, I'd expect a decent maker to do this at the factory
before final quality check if it is a real issue.

Then you should also expect to pay more for that speaker in the shop.

To have something perform its best?

For the additional man hours, extra time between production and sale,
facilities and space necessary to burn in speakers between production line
and QC.

I don't know what they'd do about the noise - presumably construct a special
sound-proofed room so as not to disturb employees with the sound of multiple
speakers playing god-knows-what, at once?

I seem to recall Linn used to do this on their Karik CD players (and, for
all I know, this is true of later models too). A rack full of CD players,
powered up and left running. It would be slightly tougher with speakers,
though.

Decent speakers will be checked before leaving the factory. Not much of a
problem to run them for a few hours if this really was necessary.

At what price level do you feel "decent speakers" enter the market?

On Thu, 28 Oct 2004 01:28:04 +0100, "JustMe" wrote:

I seem to recall Linn used to do this on their Karik CD players (and, for
all I know, this is true of later models too). A rack full of CD players,
powered up and left running. It would be slightly tougher with speakers,
though.

I have seen dozens and dozens of raw drivers being driven, at high
levels, at the Burmester factory. This was done after basic screening
but before assembly into systems. I vaguely recall seeing something
similar at a visit to Revel.

Kal

In article ,
JustMe wrote:
Then you should also expect to pay more for that speaker in the shop.

To have something perform its best?

For the additional man hours, extra time between production and sale,
facilities and space necessary to burn in speakers between production
line and QC.

The speakers have to be stored somewhere. Not a huge problem to hook them
up.

I don't know what they'd do about the noise - presumably construct a
special sound-proofed room so as not to disturb employees with the sound
of multiple speakers playing god-knows-what, at once?

So they have to be played loud? And with a particular signal?

I seem to recall Linn used to do this on their Karik CD players (and, for
all I know, this is true of later models too). A rack full of CD players,
powered up and left running. It would be slightly tougher with speakers,
though.

I don't think I'd take much notice of what Linn's practices were. Though
if they'd said they ran in their turntables, I'd see a possibility that
was needed.

Decent speakers will be checked before leaving the factory. Not much
of a problem to run them for a few hours if this really was necessary.

At what price level do you feel "decent speakers" enter the market?

A couple of hundred pounds?

--
*I wonder how much deeper the ocean would be without sponges.

Dave Plowman London SW
To e-mail, change noise into sound.