JBL Stage1 51F 2-Way Music Box With the JBL speakers of the Stage series, the usual JBL performance is significantly cheaper. Polypropylene woofers provide a powerful foundation at low and medium frequencies, while Mylar balanced dome tweeters complement full-range sound with fresh, clear highs. The Stage1 is the entry line of JBL; a lot of great sound for little money. Amazed faces when people hear the sound of the JBL car boxes set of the STAGE1 series. They are compatible with most car models with the same dimensioning. The STAGE1 series also surprises with optimal energy distribution. In short, car boxes that can deliver much more than just cool sound. A great car hifi speaker JBL at a very amazing price. Features of the Stage1 51F JBL speakers * Stage1 51F 5-1/4 inch (130 mm) two-way car speaker. * Load capacity: 30 W RMS, 150 W tip. * Sensitivity (@ 2.83V): 90 dB. * Frequency response: 75 Hz - 20 kHz. * Nominal impedance: 4 ohms. Dimensions of the Harman Kardon speakers: * Diameter: 129 mm. * Installation diameter: 115 mm. * Installation depth: 53.5 mm. Do you want even better sound? * Replace your radio * Add amplifier * Choose a higher JBL line: The JBL Line-Up: * Stage1 * Stage2 * Stage3 * Club * GX * Club2 * stage * arena What's in the box? * 2 x JBL Stage1 51F car speakers without grill, 8 screws, 8 mounting clips.