[Boatanchors] Speech Amp

[J Forster]

rbethman wrote:

> V represents Voltage in terms of DC.  Even as far back in engineering
> tomes dated 1962.
>
> AC voltages, even audio, has been represented as E.

V and E are interchangeable.

> Impedance also requires FREQUENCY.

Really? How about a 100 Ohm, non-inductive resistor.

In general, an impedance has a real and a reactive part, of the form (A+jB). If
the reactive part is zero, it's still an impedance, but it is not frequency
dependent.

-John

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