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Black 18AWG 2-conductor CL2 speaker wire on a 500ft spool

Monoprice Inc.

Monoprice 141401 speaker wire 18AWG 2-conductor CL2 500ft black

SKU CH-BX1R-YX1M2

Oxygen-free 18 AWG pure copper speaker cable, CL2-rated for in-wall runs, 500 ft on a single spool

  • TypeOthers
  • ColorBlack
  • Length152.4
  • Connector Number2
  • FeaturesTwo conductors made of high purity (greater than 99.95 perce
  • High-purity 99.95% oxygen-free copper reduces signal loss
  • CL2-rated PVC jacket meets in-wall fire-safety codes
  • Color-coded conductor insulation speeds polarity identification
  • 500 ft spool covers whole-home audio runs
  • Pure bare copper outperforms typical 68% conductive CCA wire

Monoprice 18AWG CL2 speaker wire

This 500ft roll of 18AWG speaker wire uses two conductors of 99.95 percent pure oxygen-free bare copper. It is designed for home audio installations where in-wall routing is required. The CL2-rated jacket meets fire safety codes for residential use. Installers and DIY enthusiasts can pull long runs from a single spool.

Check amplifier impedance and run length

Verify that the total loop resistance of your planned cable run stays below five percent of your speaker's minimum impedance. The supplier notes that even nominal 8-ohm speakers can dip to 4 ohms at certain frequencies. Copper-clad aluminum alternatives only reach about 68 percent of this conductivity. Measure your longest speaker distance before cutting.

Color-coded PVC jackets simplify polarity

Each conductor carries its own colour-coded PVC insulation for quick positive and negative identification. The outer black CL2-rated PVC sheath protects both conductors during in-wall pulls. No connectors or termination tools are included in the package. You will need to supply banana plugs, spades or bare-wire connections separately.

Highlights

  • High-purity 99.95% oxygen-free copper reduces signal loss
  • CL2-rated PVC jacket meets in-wall fire-safety codes
  • Color-coded conductor insulation speeds polarity identification
  • 500 ft spool covers whole-home audio runs
  • Pure bare copper outperforms typical 68% conductive CCA wire

Specifications

BrandMonoprice
Model141401
TypeOthers
ColorBlack
Length152.4
Connector Number2
FeaturesTwo conductors made of high purity (greater than 99.95 percent pure), oxygen-free bare copper.

Questions about this item

Does the 500ft reel include connectors or do I need to buy banana plugs separately?

The reel supplies only the raw 18AWG two-conductor cable; no connectors are included so you will need to purchase banana plugs, spades or pin terminals separately.

The listing shows only one length and gauge — is there a different version I should consider for longer runs?

This model 141401 is offered solely as 18AWG in a 500ft / 152.4m black CL2-rated reel; if you need a thicker gauge for very long runs you would have to select a different Monoprice part number.

What does the 18AWG oxygen-free copper rating mean for an 8-ohm speaker system in practice?

At 18AWG the pure bare copper conductors keep resistance low enough that total wire resistance stays well under the 5percent guideline for 8-ohm speakers, even when impedance dips to 4 ohms, so the amplifier sees virtually the speaker's true impedance curve.

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