Neutrik 4 Pole Speakon Socket. Accurate Twist Lock Latching System. Precise Keyway for Secure Mating. Metal Insert in Locking Area. 4 Pole Speakon chassis connector- black D-size flange- self tapping screw holes (A-screw)- horizontal PCB mount. The speakon panel mount connectors are the standard chassis connectors for loudspeaker / amplifier interconnections. They feature a unique metal locking system- making contact only once fully locked. The speakon receptacles are robust- versatile and easy to terminate.. neutrik connector-neutrik speakon-speakon connector-4 pole speakon connector