From: SteveR <raichea_at_yahoo.com>
Date: Mon, 6 Jun 2005 10:17:22 +0100

BlueChip wrote:

> 9V !!!???
>
> Quick check:
>
> 9Volts into 4Ohms -> 2.2Amps
> 2.2Amps _at_ 9Volts -> 20Watts
>
> That'll be "20Watts RMS" or "26Watts peak-to-peak" or "about
> 1'300Watts PMPO"
> So 9V would kill most desk-top speakers, but work well with stage kit.
>

But a little rectangular 9V battery can supply only limited current...and
the voltage drops rapidly even with currents as low as 50mA.

Steve.



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Received on 2005-06-06