Re: 3 dB bandwidth

Guy Macon wrote:

> Pooh Bear wrote:
> >
> >Guy Macon wrote:
> >>
> >> Back to the topic, 3dB is also the amount of drop you get when you
> >> have the output impedance and the input impedance matched, which was
> >> common in the days of transformer-balanced audio lines.
> >
> >Nooooo ! That's a 6dB drop.
>
> Yeeeeees! That's a 3dB drop. :)

No it isn't ! See Ohms Law !


> Actually neither one of us should be saying "drop." If I had
> specified power drop and you had specified voltage drop it
> would have been clear that we are both right.
>
> >Thank God we got rid of so-called 'matched impedance working'
> >and went for 'voltage matching' in audio a long long time ago.
>
> Try to make it work without transistors sometime.

You really mean transistors ?

I studied them when I was 12 !

> In the days
> when we all used vacuum tubes/valves and transformers, getting the
> maximum amount of power out of one transformer and into the next
> transformer was important, thus the matching, and thus the 3dB
> power drop.

That's why toobs are only used by nitwits these days.........

< plonk >

Graham

.

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