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Monster Cable M1.4s-250

250 ft. Spool of In-Wall UL CL3-Rated M1.4s 4-Conductor Speaker Cable with Magnetic Flux Tubing

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This item has been discontinued

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Monster Cable M1.4s-250

250 ft. Spool of In-Wall UL CL3-Rated M1.4s 4-Conductor Speaker Cable with Magnetic Flux Tubing


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  • M1.4 Series Biwire Speaker Cable
  • 14.8mm Outer diameter
  • Features 4 identical conductors for enhanced signal
  • Magnetic Flux Tube decreases sound distortion for a smoother frequency response
  • 6 Large bass conductors and multiple high frequency networks surround the Magnetic Flux Tube
  • Time Correct Windings enable a more precise arrival time for low, high, and mid frequencies to improve clarity
  • MultiTwist construction minimizes noise interference throughout the audio bandwidth
  • 24k Gold contact tips provides a cleaner, more efficient signal
  • In-Wall UL CL3-rated
  • PEX Dielectric insulates each conductor to help eliminate noise
  • Length: 250 Foot Spool
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Speaker Wire

Wire / Cable Type
Wires and cables are made for different uses. This use that the wire or cable is made for.

Please make sure that the wire you are purchasing matches the intended use.

Speaker Wire
Twisted Pair Wire
Twisted pair wire is used to reduce unwanted noise. Found in the higher end speaker wire and RCA cables, twisted pair wire increases the overall quality of the sound and can help cancel out extra noise.
This the how long the item is. When purchasing an item that requires a specific length (such as RCA interconnect cables or speaker wire), please make sure that the length of the item is long enough for your needs.
250 feet
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Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Monster Cable M1.4s-250