2 X 3.5 Watt Audio Current Amplifiers
The fundamental error in most audio amplifiers intended to drive 'voice coil' or 'Ribbon' speakers is the use of voltage feedback.
The movement of the cone or ribbon is proportional to the current passing through it. But due to the variations of impedance over the audio frequency range this current is not proportional to the voltage applied.
An attempt is then made to correct for the worst of these variation, the low end roll off, by designing speaker boxes with tuned ports to boost the bass.
This simple true current drive amplifier with true current feedback, (not the false current feedback), design eliminates this roll off and gives surprising audio quality even with a 4 inch speaker; and is incredible with two 8 inch speakers and a ribbon tweeter. (sorry that is my professional speakers).
Connect your speakers and audio source and your ready to listen to live audio.
Love the new project case from Jaycar part number HB5556 or RS part number 754-5985.