We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White 18AWG speaker wire on a 250ft spool, two bare copper conductors in color-coded PVC

Monoprice Inc.

Monoprice Inc. 144338 Speaker Wire 18AWG 250ft White

SKU CH-K0Y6-VS370

CL3-rated 18AWG speaker wire with 99.95% pure bare copper conductors for low resistance and accurate sound, supplied in a 250ft white reel for in-wall installation

  • TypeOthers
  • ColorWhite
  • Connector Number2
  • FeaturesPure bare copper conductors
  • Pure bare copper conductors exceed 99.95 % purity for lower resistance
  • CL3 in-wall rating meets fire safety and insurance requirements
  • 18 AWG gauge keeps cable resistance below 5 % of speaker impedance
  • Color-coded PVC jackets simplify polarity identification during installation
  • 250 ft spool provides ample length for whole-home audio runs

Pure bare copper speaker wire

Monoprice 144338 is a 250-foot spool of 18AWG speaker wire built with pure bare copper conductors. The two-conductor design uses high-purity copper rated above 99.95 percent to deliver lower resistance than copper-clad alternatives. White color-coded PVC jackets make polarity identification straightforward during installation. Suitable for home audio systems requiring long in-wall runs.

CL3 in-wall fire rating

The CL3 rating confirms the cable meets fire safety and insurance requirements for installation inside walls. This specification is the deciding factor for buyers planning to route speaker wire through stud cavities or ceilings. Without this rating, standard speaker wire may violate building codes and insurance policies for permanent installations.

Color-coded PVC jacket

Each conductor features a color-coded PVC jacket that simplifies polarity matching between amplifier and speakers. This visual aid reduces wiring errors during long pulls where conductor ends are not visible simultaneously. The jacket also provides physical protection for the bare copper conductors during installation and long-term use.

Highlights

  • Pure bare copper conductors exceed 99.95 % purity for lower resistance
  • CL3 in-wall rating meets fire safety and insurance requirements
  • 18 AWG gauge keeps cable resistance below 5 % of speaker impedance
  • Color-coded PVC jackets simplify polarity identification during installation
  • 250 ft spool provides ample length for whole-home audio runs

Specifications

BrandMonoprice
Model144338
TypeOthers
ColorWhite
Connector Number2
FeaturesPure bare copper conductors

Questions about this item

How does the 99.95% pure bare copper conductor affect resistance in a real speaker run?

The high-purity copper keeps total wire resistance well below 5% of speaker impedance, preserving the amplifier's load and preventing the audible degradation that higher-resistance CCA wire can cause.

What does the CL3 rating allow for this 18AWG wire?

CL3 certifies the cable for in-wall installation, meeting fire-safety and insurance requirements for permanent runs inside residential walls.

What physical space does a 250-foot spool of this 18AWG 2-conductor wire need?

A 250-foot spool of 18AWG 2-conductor cable is compact enough to store on a shelf or carry in a tool bag, and the flexible PVC jacket lets it pull through standard wall cavities without excessive force.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.