GDM 12/60 4Ω GDM 12/60 4Ω Mid woofer with an open chassis and a cellulose cone. Rated power with RMS filter [ W ] 60/18 Transmission band [ Hz - Hz ] 1000 - 9000 Effectiveness [dB]/1m/1W 91 CFrequency resonance [ Hz ] 250 Rated impedance [ Ohm ] 4 Data Sheet | Catalogue | Web-store |