At last, someone's brought some sense to this debate. Well done that man.
This also explains why some bigger, heavier amplifiers are capable of
expressing 'atmosphere' better than their smaller cousins, since when
launched from a trebuchet they will see more of it. The same applies to
speakers, bringing a new insight into why bigger speakers displace more air
than smaller ones.

However, given the fractious nature of some of this group's denizens, I see
a new area of potential conflict arising: in an energy-equivalent test
(cyrus/trebuchet against heavy amp dropped from a chair), which gives the
most realistic slam?

I think this thread has some way to run yet...

Tony
....especially if amplifiers start to fall around the contributors...


"Stewart" wrote in message
...
Some amps do have more SLAM! I can personally vouch for this and
demonstrate
it! and it can be measured accurately and scientifically with a db Meter
and
a seismograph.

If you take a big Krell or McIntosh and throw it on the ground it will
produce allot of slam, but if you take a wee Cyrus and throw it on the
ground the same way it produces way less slam. this can easily be
measured.
On the other hand, if you take a Cyrus and launch it from a trebuchet it
can
produce more slam than the krell dropped from head height.

Slam is what happens when two objects collide. It's to do with velocity x
mass / d (density of arrival surface) = s (slam) = energy expelled during
impact

I recommend the trebuchet method for launching if you want to test out
your
own equipment. subs are the most fun.

Stew.



"Tim S Kemp" wrote in message
. ..

"The Old Fogey" wrote in message
om...
Can anyone define 'Slam' in the context of audio power amps?

The ability to deal with sudden short lived transient sounds -
preferably
without affecting the rest of the output of the amp. Normally acheived
with
good PSU design and big power reserves and capable of transient output
well
beyond the units continuous ratings.