Big tweeter for big competition Hertz's SPL Show Series speakers deliver serious sound for serious competition. This SPL Show ST 25A NEO 1-13/16" bullet tweeter is built to be a big player in an awesome audio system. Weather-resistant materials and enhanced design guarantee impressive playback, even in harsh environments. A copper clad aluminum ribbon voice coil, a neodymium magnet, and a highly efficient compression loading horn mean this speaker is built to win. They're also a great choice for motorcycles and outdoor rigs, thanks to the weather-resistant design. The Hertz philosophy Hertz believes that a good speaker should bring out the emotional power of the music you love. That's a high bar, but with their commitment to using premium components and boundary-pushing design, they're more than up to challenge. Comprised of music lovers, Hertz is committed to optimizing your car's sound system for total audio enjoyment. Product highlights: 1-13/16" aluminum dome bullet tweeter designed for SPL competition handles up to 50 watts RMS (100 watts peak) high-pass crossover point: 5,000 Hz at 12 dB per octave frequency response: 3,000-20,000 Hz impedance: 4 ohms sensitivity: 107 dB top-mount depth: 1" warranty: 2 years 60-day returns MFR # ST 25A NEO Item # 301ST25ANE What's in the box: Hertz ST 25A NEO owner's manual 2 Tweeters 2 Threaded trim rings (installed) 2 Threaded mounting collars (installed) 4 Rubber gaskets 2 Trim ring tools Owner's manual (English/ Spanish/ French/ German/ Italian/ Portuguese/ 28 Others) The Hertz ST 25A NEO replaces these items: Hertz ST 25 Product Research Features Power: The power handling specification (100 watts peak/50 watts RMS) is given when using a high-pass crossover; 5 kHz and 12 dB/octave. Crossover: No crossover is included; the ST 25A Neo is packaged for use in an actively crossed over system. Mounting: The ST 25 tweeters are designed to be flush mounted from the bottom, with the mounting surface sandwiched between the included threaded mounting collar and threaded trim ring. The threaded shaft is approximately 1" tall, so the tweeter can be positioned within a range of depth/mounting height combinations. An optional threaded flange is available (AFR 25, sold separately) to top mount the tweeters. Measurements: Required Cutout Diameter: 1.715" (compatible with 1¾" hole saw bit) Bottom Mounting Depth: 2.02" Trim Ring: Diameter: 2.244" Height: 0.18" Mounting Collar: Diameter: 2.246" Height: 0.19"