https://www.ebay.com/sch/i.html?_nkw=18+Sound+12+In+Very+High+Output+Mb+Ferrite+Transducer+8+Ohms&_sacat=0&_dmd=2

18 Sound 12-In Very High Output Mb Ferrite Transducer 8 Ohms

Regular price
$259.00
Sale price
$180.00

* Very High Output MB Ferrite Transducer * 101.5 dB SPL 1W / lm sensitivity * 75 mm (3 in) Interleaved Sandwich Voice coil (ISV) * 450 W AES power handling * Double Demodulating Rings (DDR) for lower distortion * Improved heat dissipation via un