For JBL EON618S Active Speaker Power Amplifier Module - AliExpress
Amazon.com: LASE Replacement Amplifier Module for JBL EON-618S Sub-Woofer Powered Speaker Amplifier Module ONLY Does NOT Include AMP Chamber. : Musical Instruments
User manual JBL EON618S (English - 28 pages)
Used JBL EON 618S Powered Subwoofer | Guitar Center