Monoprice

Monoprice 141380 16AWG CL2 Speaker Wire 250ft

Name: Monoprice 141380 16AWG CL2 Speaker Wire 250ft
Brand: Monoprice
SKU: 141380

★★★★★4.8 (1754 reviews)

High-purity oxygen-free copper speaker wire with CL2 in-wall rating, delivering clean audio over a generous 250-foot run.

$119.99*$149.54Save 19%

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*Price sourced from Amazon.com. Last updated:Jun 28, 2026.Price and availability are subject to change.

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Overview

The Monoprice 141380 16AWG speaker wire is a bulk cable solution designed for permanent audio installations, particularly in-wall runs where fire safety compliance matters. Its CL2-rated PVC jacket meets the safety and insurance requirements for routing cable inside the walls of residential buildings, making it a practical choice for custom home theater and whole-house audio projects. The 250-foot continuous length provides ample wire for multi-room setups, allowing installers to cut precisely what they need without splicing shorter lengths together.

At the core of this cable are two conductors made from oxygen-free bare copper with greater than 99.95% purity. This high-purity copper minimizes resistance and signal degradation, helping ensure that the impedance load your amplifier sees stays as close as possible to the actual impedance curve of your speakers. The color-coded PVC jacket on each conductor simplifies polarity identification during installation, reducing the chance of wiring errors that can cause phase issues in your audio. While 16AWG is well-suited for typical residential speaker runs, those planning runs beyond 50 feet to 8-ohm speakers or driving lower-impedance loads may want to consider stepping up to a heavier gauge.

Key Features

Features two conductors made of high purity (greater than 99.95 percent pure), oxygen-free bare copper.

Each conductor is jacketed with color-coded PVC for easy polarity identification.

CL2 rating indicates that the cable complies with fire safety and insurance requirements, making it safe for use inside the walls of residential class buildings.

Using Pure Bare Copper speaker wire ensures that the total load put on the amplifier remains as close as possible to the impedance curve of your speakers.

16AWG.

Specifications

Brand

Monoprice

Model

141380

Wire Gauge

16AWG

Conductors

2-Conductor

Conductor Material

Oxygen-Free Pure Bare Copper (>99.95% purity)

Jacket Rating

CL2

Jacket Material

PVC

Length

250 feet

Color

Black

Pros & Cons

👍 Pros

Oxygen-free bare copper conductors with over 99.95% purity for reliable signal transfer.
CL2-rated jacket allows safe permanent installation inside residential walls.
250-foot length provides enough wire for multi-room or whole-house installations.
Color-coded conductors make it easy to maintain correct polarity during installation.
16AWG gauge strikes a practical balance between flexibility and current-carrying capacity.

👎 Cons

16AWG may not be sufficient for very long individual runs exceeding 50 feet to low-impedance speakers.
Bulk 250-foot spool is more wire than most single-room setups require.
No included connectors or terminations — you will need to supply your own banana plugs or spades.
Black PVC jacket may be difficult to see when routing through dark wall cavities.

Frequently Asked Questions

What does the CL2 rating mean for this speaker wire?

The CL2 rating means this cable meets fire safety standards for installation inside the walls of residential buildings, so you can run it through walls without violating building codes or insurance requirements.

What gauge is this wire and what speaker runs is it suitable for?

This is 16AWG wire, which is well-suited for speaker runs up to about 50 feet for 8-ohm speakers. For longer individual runs or lower-impedance speakers, you may want to consider a thicker gauge.

Why does oxygen-free copper matter in speaker wire?

Oxygen-free copper (over 99.95% pure) reduces oxidation and corrosion over time, which helps maintain consistent signal transfer and prevents degradation of audio quality across the life of the installation.

How do you identify the positive and negative conductors?

Each of the two conductors is jacketed in color-coded PVC, making it easy to maintain correct polarity throughout your entire run.

Is the 250-foot length supplied on a spool?

Yes, the wire comes in a continuous 250-foot length, which you cut to the individual runs you need for your installation.