In article , John Phillips
wrote:
On 2008-10-14, Jim Lesurf wrote:
In article , Eeyore
wrote:


Jim Lesurf wrote:

I also still have my natty copy of the 'sliderule' he had sent out
with one issue of HFN. This seems to imply I should change to a more
powerful amp. I confess seeing this was one of the things that
prompted my curiosity and lead to the HFN article I mentioned. Like
yourself, I suspect, I've spent far more hours than any sane person
should watching a scope display, etc, of power amp output whilst
playing music to see what demands the music waveforms place on the amp
and speakers.

Some time ago John Crabbe reported published work in which listeners'
perception of the same absolute loudness was rather different when they
were listening in a large concert hall compared to a domestic listening
room. This would suggest you do indeed need less in SPL terms at home
than you get in the auditorium.

Yes. I should make a public acknowledgement to JC here for that. I had read
his articles and long since forgotten about them. He then saw my article
and politely pointed out his own. I should have mentioned his articles as
references for people to check out. Will do so if I get a chance to write
more on the topic.

He - and some readers - described the perception as being a sort of audio
claustrophobia. This seems to be due to the short-time-delay nature of the
reflections in small domestic rooms. So the work in my article may point at
the cause. But at present it is hard to say for sure as there is a lack of
experimental data so far as I am aware.

Slainte,

Jim

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