Re: 3 dB bandwidth

Pooh Bear wrote:
> 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.........
>

Well it would certainly do by back a service by not being such a nitwit.
My Fender Twin Combo is just about impossible to carry single handed up
the stairs.

Kevin Aylward
informationEXTRACT@xxxxxxxxxxxxx
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.


.

Quantcast