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Black 18AWG two-conductor speaker wire on spool, CL2-rated PVC jacket

Monoprice Inc.

Monoprice 141393 Speaker Wire 18AWG 2-Conductor 250ft Black

SKU CH-0ZRR-Y04EV

CL2-rated 18 AWG speaker wire with two oxygen-free copper conductors on a 250 ft spool

  • TypeOthers
  • ColorBlack
  • Length76.2
  • Connector Number2
  • FeaturesFeatures two conductors made of high purity (greater than 99
  • Pure bare copper conductors exceed 99.95 percent purity for accurate signal transfer
  • Oxygen-free copper avoids the 68 percent conductivity loss typical of copper-clad aluminium wire
  • CL2-rated PVC jacket permits in-wall installation under building codes
  • Colour-coded conductor insulation simplifies polarity identification during setup
  • 250-foot spool provides ample length for whole-home audio runs

Monoprice 18AWG Pure Copper Speaker Wire

This 250‑foot spool delivers two conductors of 99.95 percent pure oxygen‑free bare copper for home audio installations. The CL2‑rated black PVC jacket meets in‑wall fire safety requirements for residential runs. Color‑coded inner jackets simplify polarity identification during termination. It suits installers who need long, low‑resistance cable for stereo or multi‑room systems.

Resistance limit for transparent audio

Speaker wire should add no more than five percent resistance relative to the speaker’s lowest impedance to avoid audible impact. Many affordable cables use copper‑clad aluminium, which is only sixty‑eight percent as conductive as pure bare copper. That extra resistance alters the amplifier’s load and can change frequency response. This wire’s pure copper construction keeps added resistance well within the transparent threshold.

18‑gauge sets the maximum run length

The 18AWG cross‑section determines how far you can run the cable before resistance exceeds the five‑percent guideline for a given speaker impedance. Longer runs or lower‑impedance loads will require a thicker gauge to stay transparent. Buyers planning very long distances or driving four‑ohm loads should calculate total loop resistance before choosing this gauge.

Highlights

  • Pure bare copper conductors exceed 99.95 percent purity for accurate signal transfer
  • Oxygen-free copper avoids the 68 percent conductivity loss typical of copper-clad aluminium wire
  • CL2-rated PVC jacket permits in-wall installation under building codes
  • Colour-coded conductor insulation simplifies polarity identification during setup
  • 250-foot spool provides ample length for whole-home audio runs

Specifications

BrandMonoprice
Model141393
TypeOthers
ColorBlack
Length76.2
Connector Number2
FeaturesFeatures two conductors made of high purity (greater than 99.95 percent pure), oxygen-free bare copper.

Questions about this item

How do I choose between the available lengths of this 18AWG speaker wire?

This listing supplies a single 250-foot reel, which equals 76.2 metres of two-conductor cable.

What does the 99.95 percent pure oxygen-free copper mean for my amplifier and speakers?

The high-purity bare copper keeps added resistance far below the 5 percent threshold, so the amplifier sees a load that closely matches the speaker’s impedance curve.

What does the CL2 rating on the PVC jacket allow for installation?

CL2 rating means the cable meets fire-safety requirements for in-wall and residential riser runs.

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