On Fri, 28 May 2010 11:13:46 +0200
Jörn Nettingsmeier wrote:
> On 05/27/2010 06:36 PM, Bob van der Poel wrote:
How much sound output power do you actually need? In bridge mode an
amplifier running off 12V can deliver a maximum of 18W RMS into 4ohms.
Here in the UK Maplins supply a suitable power module (they call it 40W
- that's peak power) very cheaply - 15.99ukp
It's actually a Kemco product. I don't know how available that would be
in other countries.
At 500mV sensitivity it will probably be a pretty good match for
direct connection to most keyboards. If not, a small buffer amp could
easily be patched in.
I don't recommend using a car battery. They are not designed for steady
discharge, but for short bursts and long recharge times. Although
initially more expensive you would do a lot better getting a sealed gel
type lead-acid battery with suitable charger.
Will J Godfrey
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.
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