In article ,
All Ears wrote:
"Stewart Pinkerton" wrote in message
...
On 27 Jul 2003 17:39:35 GMT, "All Ears" wrote:

"Stewart Pinkerton" wrote in message
...

Speakers are designed to respond
linearly to a constant voltage input, and most modern speakers assume
drive by a constant voltage source, i.e. an amp with very low output
impedance and high reserves of current. This is a fair description of
a good SS amp, but not at all of a tubed OTL amp, which can have
several *ohms* output impedance.

So Ohms law does not apply to speakers, interesting....

Ohm's Law certainly does apply. I suggest that you read up on it.

The actual force, that the motor of the driver produces, depends on the
current induced into the coil, right?

So what? how is that relevant? How does the acoustical output of
the speaker depend upon the applied fource? Unfortunately, your
model will utterly fail at this point to make even a remotely
applicable prediction, because there is a LOT missing from your
"model."

Does normal speakers have a totally
flat impedance curve? Assuming that the voltage is kept constant, and the
inpedance changes, will this not give an unlinear current, which results in
amplitude variations over the band? (Rehercing Ohms law

No, it will give and ENITRELY linear relationship between
current can voltage, since Ohms law:

E = I R

is an entirely linear equation in that a) it is continuous abd
b) it is a first-order expression.

YOu assume there is some maghic connection between current,
force and the response of the speaker. Well, there IS a
relationship, and it IS linear, but it is NOT magic and it is
NOT the relatioship you seem to think it is.

--
| Dick Pierce |
| Professional Audio Development |
| 1-781/826-4953 Voice and FAX |
| |