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Neutrik NL4FX-2
4-Pole Speakon Cable Connector with Red Bushing


The industry-standard for loudspeaker connections offer extremely reliable and robust cable connectors with a reliable locking system.
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List Price: $10.94
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Neutrik NL4FX-2
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The industry-standard for loudspeaker connections offer extremely reliable and robust cable connectors with a reliable locking system.  They feature solid contacts with screw-type terminals including a stranded wire protection which offer also solder termination.

  • Current rating 40 A rms continuous
  • Up to 50 A audio signal, duty cycle 50%
  • Only 3 parts, easy to assemble
  • High-impact materials - long-lasting and reliable
  • Easy and extremely precise locking system "Quick Lock"
  • Improved grip on latch
  • 1-piece strain relief, chuck for 7 to 14.5 mm cable O.D.
  • Color coding possible
  • Improved screw-type termination for highest pull-out force
  • Integrated design guarantees "Made by Neutrik®"

Technical Information:

  • Connection Type: speakON
  • Gender: female

Electrical Specifications:

  • Contact resistance: < 2 mOhm (inner) (after lifetime)
  • Dielectric strength: 4 kVdc (peak)
  • Insulation resistance: > 1 GOhm (after dampheat)
  • Rated current per contact: 40 A rms continuous
  • Rated current per contact: 50 A audiosignal, duty cycle 50 %
  • Rated voltage: 250 V (Insulation)
  • NOTE: speakON is NOT to be used as an ACmains or power supply connector!

Mechanical Specifications:

  • Cable O.D.: 7 - 14.5 mm
  • Cable retention: = 220 N (subject to cable O.D. and material)
  • Lifetime: > 5000 mating cycles
  • Wiresize: 4 mm² / 6 mm² (screw type terminals/soldering)
  • Wiresize: 12 AWG / 10 AWG
  • Wiring: screw-type terminals or soldering
  • Locking device: Quick Lock (latch)

Material Specifications:

  • Contact plating: 4 µm Ag
  • Contacts: Brass (CuZn39Pb3)
  • Insert: PBTP 20 % GR
  • Locking element: Zinc diecast (ZnAl4Cu1)
  • Shell: PBTP 20 % GR
  • Strain relief: Polyacetal (POM)

Environmental Specifications:

  • Flammability: UL 94 HB
  • Solderability: Complies with IEC 68-2-20
  • Temperature range: -30 °C to +80 °C

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