Neutrik NL4FX

4 pole cable connector with chuck and dark grey bushing.

A new generation of loudspeaker amplifier system: SPX Series. This second generation of Speakon® connectors features a higher current rating for the operation of high power speakers and amplifiers carrying more than 1000 Watts. Change easily and quickly from a straight connector to the right-angle version, without disconnecting the cable. Only 3 parts.

Electrical Specifications:

• Rated current/contact: 40 A rms continous, 50 A audiosignal, duty cycle 50%
• Dielectric strength: 4kV peak
• Rated voltage: 250 V ac
• Contact resistance after lifetime: < 2 m ohm
• Insulation resistance: > 1 G ohm
• Inrush/Outrush current capability (12v source): 300/30A/200 ms
• Creepage distance is according to IEC 60664-1

Mechanical Specifications:

• Retention method: Quick lock with latch
• Lifetime (mating cycles): > 5000
• Cable anchoring: NEUTRIK® chuck principle
• Cable O.D. range: 7.5 - 14 mm / 0.3 - 0.55"
• Cable retention force of >220N is subject to cable OD and material
• Wiring: screw-type terminals (stranded wire 5mm2/10 AWG) or soldering (stranded wire 6mm2)
• Solderability: complies with IEC 68-2-20

Material Specifications:

• Contacts: Brass CuZn39Pb3
• Locking element: Zinc diecast ZnAI4Cu1
• Housing / insert: PBTP 20% GR
• Bushing: Polyamide PA 6 15% GR
• Chuck: Polyacetal POM
• Temperature range: -30°C to +80°C
• Flammability: UL94V-0 (housing), UL94HB

Amplifier Wiring:

• Stereo ("HIFI"): one NL4MP socket left channel pins 1+/1- right channel pins 2+/2-
• Power ("PA) Standard: three NL4MP sockets "A" socket: left channel pins 1+/1- "B" socket: right channel pins 1+/1-
• Bridged mono: "M" socket: left channel pins 1+/1- right channel pins 2+/2-
• BI-Amp: one NL4MP socket low frequency pins 1+/1- high frequency pins2+/2-

Cable Wiring:

• Stereo ("HIFI"): NL4FC/NL4FX/NL4FRX on amplifier end, four conductor cable splits into two pairs with NL4FC/NL4FX/NL4FRX on each end
• Power ("PA) Standard: a two-conductor cable for each channel with NL4FC/NL4FX/NL4FRX on both ends
• Bridged mono: a special two-conductor cable, on both ends wired to pin 1+/2+ of NL4FC/NL4FX/NL4FRX
• BI-Amp: a four-conductor cable on both ends wired to pins 1+/1-, 2+/2- ofNL4FC/NL4FX/NL4FRX

Speaker Wiring:

• Stereo ("HIFI"): one NL4MP per speaker left speaker pins 1+/1- right speaker pins 2+/2-
• Power ("PA) Standard: NL4MP pin 1+ to speaker coil "+" NL4MP pins 1- and 2+ to speaker coil "-"
• Bridged mono: NL4MP pin 1+ to speaker coil "+" NL4MP pins 1- and 2+ to speaker coil "-"
• BI-Amp: one NL4MP socket low frequency pins 1+/1- high frequency pins2+/2-