12
—
Turn the potentiometer to its centre position.
—
Connect a loudspeaker (8 ohm / 1Watt min.) between
the points LS.
—
Connect a power supply (9VDC) or a 9V battery bet-
ween the V and -V.
—
Pressing the different push buttons now causes the
respective effects to be produced.
F
ATTENTION:
With some of the effects (e.g. sirens,
car engine) it's necessary to keep the push button
pressed. The speed of the effects can be changed
(optimized) by turning the potentiometer.
The OUT output allows you to extra amplify the
sounds or to connect them to a mixing panel. In this
case you possibly can disconnect the loudspeaker.
Thanks to the position of the push buttons and of
the potentiometer, this circuit can be built into a
plastic housing or the pcb be mounted behind a pa-
nel very easily.
Test and usage
15. Test and usage
Summary of Contents for K4401
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