Quote:
Originally posted by chrismunn
ok, im officially "electronics stupid" here... if that controller controls the pump, why do you have to plug it into the tunze box thing you show there?
was this demonstration for people with prior skills, or for the regular joe jack like myself? 
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When you buy a Tunze Stream, it comes with:
-Stream pump
-Controller box
-Transformer
The "controller box" is the driver for the Tunze stream. Without it, the stream pump will not run. It has speed control, alarm, etc. The stream pump will run at steady mode with just the driver box and transformer.
The function of my "controller" is to tell the Tunze driver box to turn ON and OFF rapidly. By doing so, it discharges the water from the box and lets it IN again - in a rapid way. This rapid In-OUT motion is what creates the wave in your tank.
Using the Pot (potentiometer, or variable resistor) in my controller, you can vary the frequency of the ON/OFF signal. You need to "find" your tank's
resonant frequency to create a massive wave.
It should be noted that the presence of other powerheads/stream pumps will NOT affect the waves.
I hope that explains it. Has anyone started building theirs yet?