[John Hardy]

On 7/31/2011 7:52 AM, Dick Pierce wrote:
Peter Larsen wrote:
John Hardy wrote:


From the specs on the Yorkville page for the PL315:


Specifications subject to change without notice




There is only a mentioning of a 4 Ohm version, there is no mentioning
of differences between 4 and 8 Ohm version, so by implication the 4
Ohm version has the same specs as the 8 Ohm version.

"Implication" has no technical or legal weight. Studying the
problem purely from a technical viewpoint reveals that such
anm implication has no basis in physical fact.

From a legal standpoint, specifications are deliberately
written such that they are essentially unenforceable in
any dispute involving a purchased product.

Also specs usually change only during the period of
manufacturing, not after.

"Specifications," often written by a marketing droid in
the absence of any technical context, can and often do
change at any time for any reason. One is reminded, for
example, of the old Tektronix 5403 plug-in oscilloscope,
originally it was advertised with a bandwidth spec of 60
MHz, but, without any circuit changes that had any effect
on bandwidth, its bandwidth spec changed to 50 MHz.

Now, I have access to 3 of them: one from the first
production run and others from later, and they ALL meet
the 60 MHz bandwidth spec with room to spare. But, because
the manufacturer changed the spec (arguably retroactively),
does this imply the actual performance changed (hint:
rhetorical question)?

A "spec" is not a statement of actual performance, it is,
especially in the case of speakers, a general hint of
behavioral expectations, and deliberately loose to boot.


And the Titanic was "unsinkable". Etc.

John Hardy