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White plenum-rated speaker cable on spool, 14AWG two-conductor, 500ft

Monoprice Inc.

Monoprice Inc. 13718 14AWG 2-Conductor CMP Speaker Wire 500ft

SKU CH-KTNP-CS408 MPN 13718

CMP-rated 14AWG two-conductor speaker wire with oxygen-free copper conductors for in-wall residential and commercial installations, 500 ft

  • TypeAudio cable
  • Length500 ft
  • CMP-rated jacket meets fire-safety codes for in-wall runs
  • 14AWG oxygen-free copper conductors deliver clean signal over long distances
  • 500-foot reel covers whole-home or commercial installs in one pull
  • Softer plenum jacket eases routing through tight stud bays
  • Lifetime warranty backs every foot of the 13718 cable

Monoprice Nimbus 14AWG CMP Speaker Wire

Monoprice Nimbus Series 13718 is a 14AWG two-conductor speaker wire rated CMP for plenum air spaces. It uses 100 percent pure oxygen-free bare copper conductors inside a fire-retardant jacket tested by Underwriters Laboratories. The 500 ft length suits whole-home audio runs and commercial installs where building codes require plenum-rated cable. Lifetime warranty backs the product.

CMP rating and oxygen-free copper benefits

The CMP plenum rating means the jacket resists flame spread and meets fire safety codes for installation inside walls, ceilings and air-handling spaces in residential and enterprise buildings. Oxygen-free bare copper conductors reduce resistance and signal loss over long distances. The Nimbus jacket material is softer and more flexible than traditional plenum jackets, easing pulls through conduit and tight cavities. Color-coded inner jackets simplify polarity identification during termination.

Verify gauge, conductor count and length needs

Confirm that 14AWG cross-section meets the amplifier power and run-length requirements for your speaker loads. Ensure two conductors are sufficient — this wire carries a single speaker channel per run, so multi-speaker zones may need multiple pulls or a four-conductor alternative. Check that the 500 ft spool covers the total cable distance plus slack for terminations and future adjustments. Local codes may require additional markings or inspection.

Highlights

  • CMP-rated jacket meets fire-safety codes for in-wall runs
  • 14AWG oxygen-free copper conductors deliver clean signal over long distances
  • 500-foot reel covers whole-home or commercial installs in one pull
  • Softer plenum jacket eases routing through tight stud bays
  • Lifetime warranty backs every foot of the 13718 cable

Specifications

BrandMonoprice
Model13718
TypeAudio cable
Length500 ft
Shipping weight10.89 kg
Package size351 × 340 × 236 mm

Questions about this item

Will the 14AWG oxygen-free copper conductors need replacement over time?

The solid copper conductors are built for permanent in-wall installation and do not degrade under normal audio use, so no scheduled replacement is needed.

What limits performance on a continuous 500 ft run?

Resistance increases with length, so on a full 500 ft pull the 14AWG gauge sets the practical limit for amplifier damping and voltage drop.

Does the CMP-rated jacket get hot or draw extra power during all-day use?

Speaker wire carries only the audio signal current from the amplifier; the CMP jacket adds fire safety but does not generate heat or consume power itself.

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