Eeyore wrote in message
...


N_Cook wrote:

I would suggest that it is due
to forcing the air to follow a tortuous path so a generic design flaw.

That's what causes the high back pressure (and hence low air flow). For
good
cooling the airflow path should be in a striaght line with air vents in
and out
as large as possible (consistent with safety regs) and there are some
other cute
aspects which are even less well known too.

Graham


Agreed , I'll take a photo later to show how tortuous this path is.

Even more dramatic was an Ashdown amp I had to repair recently for another
fault.
Supposedly fan assisted cooling but the fan "design" location was just
circulating air inside the casing as no baffles etc to guide air in and out
the single "vent" port.
Owner much appreciated the amp running much cooler and being able to feel
air coming out of the vent.

s.e.r added as design issue

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