Big Blue Posted December 19, 2023 Posted December 19, 2023 Further Information: These are a pair of crossovers for the JBL 4343 monitors. Everything works. They were made by Werner Jagusch in Germany. They feature autoformers instead of Lpads and paper in oil caps in certain places. You can accurately adjust the levels of the midbass, high frequency horn, and ultra high frequency drivers on your JBL 4343's by easily moving wires a couple of wires at the screw terminals. I will include the instructions for this. The jumper cables allow you to either run the speakers in biamp mode with two ampliferes or with a single amplifier. 2
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