In article ,
wrote:
Available now hi-fi+ issue 60 UK & Europe NOW N. America 31st Octobert
[snip]

Since the above was posted to the group I assume the poster will have the
courtesy to also be reading this, and able to respond...

I have been reading the issue advertised in the posting. On page 31 it
contains a line from a loudspeaker designer to the effect that:

"This is because when you bolt the driver to an MDF baffle, you cannot go
past three Newton-pounds torque without damaging it..."

I am puzzled for various reasons.

1) 'Newton-pounds' don't seem to be either SI units or Imperial ones.

2) 'Newton-pounds' strikes me as not having the correct dimensions for a
torque - although given (1) it is hard to be sure. :-)

3) I'd have thought that damage would result from excess *pressure* or
shear or bending forces. The effect of applying torque to a bolt would
presumably depend on a number of other factors like the size and shape of
the bolt-head face. (Also the details of the item being bolted down.)

So can someone from HF+ explain what was meant? Was it a typo? If so, what
should it have said? Or is it literally a transcript og what the person was
saying "In his own words..." as the header of the box states? if so, what
was he meaning?

Slainte,

Jim

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