Check the listing for details. OPTION BASE-130 13cm Component Speaker. Condition: New. Listed at 241.51 USD. The OPTION BASE-130 are a very good choice if you want to significantly improve the vehicle sound in the interior. The 20 mm silk dome tweeter ensures clear, pleasant highs, while the 13 cm bass-midrange driver with its 3 ohm voice coil enables clean and powerful reproduction. With 55 watts RMS, the speakers are ideal for direct operation on the car radio and reliably deliver strong performance - without any additional power amplifier. The compact cable crossover cleanly separates the signal between tweeter and woofer and reliably protects the tweeter from low frequencies and overload. You can easily adjust the treble volume using the integrated markings: For a more pleasant, slightly quieter playback, use the cable with the -3 dB marking, for normal volume use the red cable with.