Ervin Audio & Acoustics - Found this old brochure blurb on the JBL 4412A C.R. Monitors. I've removed the passive crossovers (to tri-amp them) and now they're equipped with SpeakOn NL8 connectors.
Help in Pricing JBL-4412a
JBL 4412A Studio Monitor Loudspeaker
4412 studio monitor - JBL 4412 studio monitor - Audiofanzine