Check the listing for details. AIR-130 | Two-Way 13cm Component Speakers | OPTION. Condition: New. Listed at 311.78 USD. The OPTION AIR-130 deliver balanced sound, high-quality materials and uncomplicated installation. The 25 mm fabric tweeter sounds warm and silky, remaining clean and rich in detail even at high volumes. The 13 cm bass-midrange driver with 3 ohm voice coil makes optimal use of the power of your car radio and ensures powerful bass and clear mids. An additional amplifier is not absolutely necessary, but can be used for maximum dynamics. The recommendation is 50 to 100 watts RMS. The included crossover is designed as a compact cable crossover and divides the signal cleanly between tweeter and woofer. At the same time, it reliably protects the tweeter from low frequencies and thus from overload. You can also adjust the tweeter volume: For more pleasant, slightly quieter playback, use the cable.