Aftermarket JBL 18 Differential Woofer Replacement (JBL2268H). JBL SRX 718 ;SRX 728 ;SRX 738 Series. JBL 2278H for JBL PRX718XLF. Differential Low Frequency replacement Transducer. JBL SRX 718; SRX 728; SRX738 Series. Capable of reproducing full-bandwidth sound at high levels. And dual voice coils to perform better than conventional designs with less distortion and at […]... Read More