Acoustically transparent aluminium alloy basket with elegant diamond cutting and featuring the aluminium Hertz logo. Hertz MP 70.3 Mille Pro. The MP 70.3 car audio mid-range speakers featuring Neodymium double magnet inside the coil produces an enthralling mid range, perfect to combine with the powerful mid-low of the MP 165P.3 woofer as well as with the detailed high range of the MP25.3 tweeter.