"Don Pearce" wrote in message
...
On Thu, 2 Oct 2003 20:02:32 +0100, "Stewart"
wrote:

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.

I've seen an upright piano thrown by trebuchet, and I can vouch
personally for the truth of your theory!

Would that be the 'Grand Slam' then?


Krell testing by trebuchet ensures a perfect ground connection ;-)


d

_____________________________

http://www.pearce.uk.com

On Thu, 2 Oct 2003 20:17:43 +0100, "Mike Gilmour"
wrote:

Would that be the 'Grand Slam' then?


Krell testing by trebuchet ensures a perfect ground connection ;-)

Or perhaps a Willson Grand Slamm speaker?

d

_____________________________

http://www.pearce.uk.com

On Thu, 2 Oct 2003 20:17:43 +0100, "Mike Gilmour"
wrote:

Would that be the 'Grand Slam' then?


Krell testing by trebuchet ensures a perfect ground connection ;-)

Or perhaps a Willson Grand Slamm speaker?

d

_____________________________

http://www.pearce.uk.com

"Don Pearce" wrote in message
...
On Thu, 2 Oct 2003 20:02:32 +0100, "Stewart"
wrote:

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.

I've seen an upright piano thrown by trebuchet, and I can vouch
personally for the truth of your theory!

Would that be the 'Grand Slam' then?


Krell testing by trebuchet ensures a perfect ground connection ;-)


d

_____________________________

http://www.pearce.uk.com

On Thu, 2 Oct 2003 20:02:32 +0100, "Stewart"
wrote:

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.

I've seen an upright piano thrown by trebuchet, and I can vouch
personally for the truth of your theory!

d

_____________________________

http://www.pearce.uk.com

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.



You've been staying up late watching those Open University science programmes -
don't think you're the only one awake at 4.45am watching reconstructions of
trebuchets hurling silicone loads........

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

On 02 Oct 2003 21:26:32 GMT
ohawker (Andy Evans) wrote:



You've been staying up late watching those Open University science
programmes - don't think you're the only one awake at 4.45am watching
reconstructions of trebuchets hurling silicone loads........

sili*cone* ?

--
Spyros lair: http://www.mnementh.co.uk/ |||| Maintainer: arm26 linux

Do not meddle in the affairs of Dragons, for you are tasty and good with
ketchup.

On 02 Oct 2003 21:26:32 GMT
ohawker (Andy Evans) wrote:



You've been staying up late watching those Open University science
programmes - don't think you're the only one awake at 4.45am watching
reconstructions of trebuchets hurling silicone loads........

sili*cone* ?

--
Spyros lair: http://www.mnementh.co.uk/ |||| Maintainer: arm26 linux

Do not meddle in the affairs of Dragons, for you are tasty and good with
ketchup.

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.



You've been staying up late watching those Open University science programmes -
don't think you're the only one awake at 4.45am watching reconstructions of
trebuchets hurling silicone loads........

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

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.