bountyhunter
Well-Known Member
Not if you parralel two four Ohm speakers. In auto use, the sustained system voltage is about 14V. Allowing about 3V drop on the power devices, you can swing about 11v (peak). That's about 7.7V (RMS) for a sine wave. That gives you about 30W RMS sine wave power driving 2 Ohm speaker load. The TDA 2003 could drive over 3A current so it can swing the voltage. It has data sheet specs for using 1.6 Ohm speakers.But only provides about 14/16W - far too low for his required 40W.
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