The TSP-203A also have a low impedance of 4 ohms, a max RMS of 30 watts and a MAX power of 100 Watts. The TSP-203A are made with a 13mm PEI dome ferrite. *For any inquiries, please contact our sales:Įngineered and designed by our development team, the TSP-203A are a pair of lightweight, high efficiency tweeters giving you loud and clear sound, even with your factory radio.