Monoprice

Monoprice 113726 16AWG 4-Conductor CMP Speaker Wire

4.7 (140 reviews)

Monoprice Nimbus 16AWG 4-conductor plenum-rated speaker wire uses pure oxygen-free copper for safe in-wall audio runs.

$96.99*$119.02Save 18%
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Monoprice 113726 Nimbus Series 16AWG 4-Conductor Speaker Wire is built specifically for installations where building codes require plenum-rated cabling. Its CMP rating certifies that the jacket material meets fire safety standards for use in plenum air-handling spaces, the areas above suspended ceilings and below raised floors where fire-resistant materials are mandatory. This makes it suitable for commercial installations, conference rooms, retail spaces, and residential builds where code compliance is required.

Each cable contains four 16 AWG conductors made from 100% pure oxygen-free bare copper, delivering low resistance and reliable audio signal transmission. The four conductors — color-coded red, black, white, and green — support bi-amplified speaker connections or dual-zone wiring from a single cable pull. Monoprice has addressed one of the most common complaints about plenum cables by engineering a jacket material that is noticeably softer and more flexible than typical CMP-rated cables, reducing the effort needed to route wire through walls, ceilings, and conduit. The 100-foot spool provides enough wire for most single-zone installations with material to spare.

Key Features

The Plenum (CMP) rating indicates that the cable complies with fire safety and insurance requirements, making it safe for use inside the walls of residential and enterprise class buildings.

This speaker Wire | features conductors made of high purity oxygen-free bare copper.

Monoprice Plenum Speaker Wire | uses a high quality material that is soft -er and more flexible than on traditional plenum rated jackets.

Easily identifiable Red, Black, White, and Green conductors.

Specifications

Wire Gauge
16 AWG
Conductors
4
Conductor Material
100% Pure Oxygen-Free Bare Copper
Fire Rating
CMP (Plenum Rated)
Conductor Colors
Red, Black, White, Green
Jacket Color
Black
Length
100 ft

Pros & Cons

👍 Pros

  • CMP plenum rating allows compliant installation in air-handling spaces without separate conduit
  • Pure oxygen-free bare copper conductors deliver lower resistance than CCA alternatives
  • Four color-coded conductors simplify wiring for bi-amp or multi-zone speaker configurations
  • Softer jacket material than typical plenum cables makes pulling through walls and ceilings easier
  • Lifetime warranty from Monoprice covers the cable for as long as you own it

👎 Cons

  • 100-foot spool may be more than needed for single-room installations, with no shorter length options in this SKU
  • 16 AWG may be undersized for very long runs exceeding 50 feet to low-impedance speakers
  • Plenum-rated jacket adds cost over standard CL2/CL3 rated cables where plenum rating is not required

Frequently Asked Questions

The CMP (Communications Multipurpose Plenum) rating means this cable meets fire safety standards for installation in plenum spaces — the areas above drop ceilings and below raised floors used for air circulation in buildings.
It has four conductors color-coded red, black, white, and green, making it easy to identify channels when wiring multi-zone or bi-amped speaker setups.
The conductors are made from 100% pure oxygen-free bare copper, which provides lower resistance and better signal transmission compared to copper clad aluminum wire.
Monoprice designed this cable with a softer, more flexible jacket than traditional plenum-rated cables, making it easier to pull through conduits and around tight corners during installation.