JBL 2231A 380mm Cone Woofer Unit USED JP Speaker unit (pair) | eBay
JBL 2231A Specifications
JBL 2231A woofers for 4343 4333 4350 studio monitors Photo #1018656 - US Audio Mart
1980s JBL Lansing 2231A Loud Speaker Walnut Stain 15” Vintage Electric Guitar Speaker Cabinet Custom Hand Made Home Brew By & For Indigo Ranch Studios Cool Cab | Reverb
SS Audio Recone Kit for JBL 2230, 2231, 2234, 2235, RK-JBL2235H