From: BlueChip <cs_bluechip_at_webtribe.net>
Date: Mon, 06 Jun 2005 17:06:23 +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.

Good point, well made ;)

BC

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Received on 2005-06-06