Heavy duty 4 pin Neutrik SpeakOn NL4MP connectors as used on professional amplifiers and speaker boxes. Handles up to 30A current. Genuine SpeakOn connector manufactured by Neutrik.Attention: speakON is NOT to be used as an AC mains or power supply connector! Features Current rating 30A RMS Glass reinforced materials make it extremely robust and dependable Precise keyway for secure mating Accurate twist lock latching system Metal insert in locking area Airtight design - optimised for speaker applications SpeakOn or Lockable Speaker Connectors can be wired up in a variety of ways for different applications. Two positive and two negative pins are provided allowing two channels of audio to be passed via a single connector. In single channel applications only +1 and -1 will be connected. Dimension Drawing Specifications Electrical Contact resistance: ≤ 3mΩ (inner) (after lifetime) Dielectric strength: 4kVdc (peak) Insulation resistance: >1 GΩ (after damp heat) Rated current per contact: 30A rms continuous Rated current per contact: 40A audio signal, duty cycle 50 % Rated voltage: 250V (Insulation) Lifetime: >5000 mating cycles Locking device: Quick Lock Chassis shape: D Layouts: Standard hole position, through holes Material Contact plating: 4µm Ag Contacts: Bronze (CuSn6) Shell: Polyamide (PA 6 30 % GR) black Environmental Flammability: UL 94 HB Solderability: Complies with IEC 68-2-20 Temperature range: -30 °C to +80 °C