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Black 12 AWG 4-conductor speaker wire on a 250 ft spool

Monoprice Inc.

Monoprice Inc. 141385 speaker wire 4-conductor 12AWG 250ft Black

SKU CH-QZSF-13K4S

Four-conductor 12AWG oxygen-free copper speaker wire on a 250ft spool, CL2-rated for in-wall installation

  • TypeOthers
  • ColorBlack
  • Length76.2
  • Connector Number2
  • FeaturesFeatures 4 conductors made of high purity (greater than 99.9
  • High-purity oxygen-free copper (99.95% pure) reduces resistance
  • 12 AWG gauge handles higher power with lower loss
  • Four conductors enable bi-wiring or multi-zone runs
  • CL2-rated PVC jacket meets in-wall fire-safety codes
  • Color-coded conductor jackets simplify polarity identification

12 AWG 4-conductor speaker cable

Monoprice 141385 is a 250-foot spool of 12 AWG speaker wire built with four conductors. Each conductor uses oxygen-free bare copper rated above 99.95 percent purity. The cable carries a CL2 rating for in-wall installation. It suits installers running multi-zone audio or bi-wire speaker connections.

Resistance limits for low-impedance loads

The supplier notes that total wire resistance should stay below 5 percent of the speaker's lowest impedance dip. Many nominal 8-ohm speakers drop to 4 ohms at certain frequencies, tightening that allowance. Copper-clad aluminium alternatives only reach about 68 percent conductivity of pure copper, adding series resistance that can alter frequency response. This pure copper construction keeps added resistance minimal.

CL2 jacket with colour-coded conductors

A black CL2-rated PVC outer jacket meets fire-safety requirements for residential in-wall runs. Inside, each of the four conductors has its own colour-coded PVC insulation for quick polarity identification. The two-connector-end layout simplifies termination at amplifiers and binding posts. The 76.2-metre length supports whole-home pulls without mid-run splices.

Highlights

  • High-purity oxygen-free copper (99.95% pure) reduces resistance
  • 12 AWG gauge handles higher power with lower loss
  • Four conductors enable bi-wiring or multi-zone runs
  • CL2-rated PVC jacket meets in-wall fire-safety codes
  • Color-coded conductor jackets simplify polarity identification

Specifications

BrandMonoprice
Model141385
TypeOthers
ColorBlack
Length76.2
Connector Number2
FeaturesFeatures 4 conductors made of high purity (greater than 99.95 percent pure), oxygen-free bare copper.

Questions about this item

Is the 12AWG 4-conductor layout the right choice for long runs to multiple speakers?

Yes — the 12AWG gauge keeps resistance low over the 250ft (76.2m) spool, and four conductors let you wire two speaker pairs or a single bi-wire run from one cable pull.

How does the 99.95 percent pure oxygen-free copper affect amplifier load compared with cheaper CCA wire?

Pure bare copper is about 68 percent more conductive than copper-clad aluminium, so the cable adds far less resistance and keeps the amplifier load closer to the speaker's true impedance curve.

What does the CL2 rating on the black PVC jacket allow for in a home installation?

CL2 rating means the cable meets fire-safety codes for in-wall and ceiling runs in residential buildings, so you can route it inside walls without extra conduit.

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